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PR-HD Reference Manual

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1. File Disc Network Capture fa O UDP RTP Port 1234 O UDP RTP Multicast Address Port 1234 HTTP FTP MMS RTSP URL Allow timeshifting Media Resource Locator MRL rtsp telepresenter ncast com live sdp FT Streaming Saving Settings gt Cancel OK 10 3 MEDIA PLAYERS The MPEG 4 format used by the Presentation Recorders is an industry wide standardized format which multiple client players support For PCs with properly configured software the playback process will be quick and easy However if a customer is having difficulty common problems to check include The client player has not been installed or is not at the latest revision level A codec required for playback has not been installed Windows Media Player does not natively support MPEG 4 files and needs a plug in to be installed to properly decode Presentation Recorder streams Contact NCast Corporation for details concerning availability of its MPEG 4 plug in Some other application has associated with one of the above file extensions Firewalls either in the laptop desktop or externally are blocking access to the required RTSP or UDP ports The network being used is not multicast enabled and multicast connectivity is being requested The network path between the client and the server is bottlenecked and unable to sustain the packet flow required for smooth continuous playback Wireless links very commonly do not have the throughp
2. 480 Height 480 Height 480 Height 480 Previous Next 11 1 1 Custom Settings Example For archival purposes or for playback on hi definition 16 9 screens this example gives the dimensions of a 720p layout that NCast and its customers have used successfully to capture conference proceedings and other seminars The capture window used is WXGA at 1280x720 resolution and 16 9 aspect ratio The Main graphics window occupies an area of 960x720 Main Window and the PIP video window is set to 320x240 In this example the Graphic Overlay 1 png image is 320x480 and is located at 0 240 For a graphics frame rate of 30 frames second a bit rate of 2 5 Mbps produces excellent results bit rates as low as 600 Kbps may be used without significant loss of quality The Channel 1 layout for the default factory Channel presets matches this example The proposed composite image should look like this NCast Corporation Revision 2 2 Page 94 NCast NCast Presentation Recorder Reference Manual Custom Layout 720p 1280 20080312 090225 001 Qu Ple Edt View Window Help PIP Window Main Window RAP 2008 El 08 Oakland CA A De 720 Sandra Faber Overlay Graphic 480 Piping the Light of tha Cosmos Though Dark Fiber To create this composite the following steps are required 1 Go to the Channels tab and mouse over the Channel icon to be modified Click Edit 2 Complete the informatio
3. 9 1 2 PIP Input The user may select a graphics or video source for capture as the secondary image which may be positioned inside of and thus overlay the Main image picture in picture PIP or the secondary image may be placed adjacent to and outside the Main image picture out of picture POP side by side The following table shows Main PIP combinations which are available NCast Corporation Revision 2 2 Page 82 NCast NCast Presentation Recorder Reference Manual MAIN Y PIP DVI A DVI D HDMI DISPLAYPORT 3G SDI COMPOSITE VGA Duplicate Comp Yes Yes Yes Yes Yes DVI A Comp Duplicate N A Yes Yes Yes Yes DVI D Yes N A Duplicate No Yes Yes Yes HDMI Yes Yes No Duplicate Yes Yes Yes Displayport Yes Yes Yes Yes Duplicate Yes Yes 3G SDI Yes Yes Yes Yes Yes Duplicate Yes Composite Yes Yes Yes Yes Yes Yes Duplicate In the above table Yes implies that the PIP arrangement is normal and could be used during a capture session Duplicate implies that the Main image and the PIP image are identical and this arrangement would normally not be used The No entries are present because the HDMI and DVI D conflict on the digital input The Comp entry allows simultaneous use of RGB on the VGA connector with component input on the DVI A connector but not RGB on DVI A 9 2 AUDIO 9 2 1 Audio Connections There are three audio input connectors on the chassis XLR balanced line high level and microphone low level This
4. Change Status off color PM Change QA AAA A Apply Cancel 7 6 TELNET SETTINGS The Telnet tab is used to enable the Telnet Serial Interface to the unit an interface which may be used to send and receive command and control strings over IP based networks See the Serial Interface Specification Manual for complete information on the serial command interfaces NCast Corporation NCast Presentation Recorder Quick Start Channels Archives Configuration Status Telnet Telnet Y Password incast IP restriction 192 168 0 Port 7474 Apply Revision 2 2 Page 66 NCast NCast Presentation Recorder Reference Manual If the interface is enabled secure the interface with a unique and non dictionary password and configure the IP restriction field to only allow the IP address of the controller unit to command the Presentation Recorder 7 6 1 Telnet Uncheck access if the serial command interface is not in use 7 6 2 Password Choose a password which has random characters and numbers and is at least 8 characters in length Unfortunately Telnet protocol sends this password in clear text so network sniffers may be able to compromise this entry 7 6 3 IP Restriction This limits the valid IP addresses which may send commands to the Presentation Recorder Normally this field should contain a single IP address which is the IP of the controller in charge of the Presentation Recorder Thu
5. Room 23B Building 5 San Jose Campus 2050 Tasman Drive San Jose CA 7 1 6 Contact Web Page The Contact web page can be the URL of the Contact name s personal web page department service group help page or course material outline 7 2 TIME 7 2 1 Time Zone The Time zone setting is required so that the timestamp information embedded in the archive filenames correctly matches the local time of day NCast Presentation Recorder Wi 4 Quick Start Channels Archives Configuration Status Time Time zone America Los Angeles Stop NTP NTP server 1 0 pool ntp org e NTP server 2 1 pool ntp org NTP server 3 2 pool ntp org Apply 7 2 2 Network Time Protocol When enabled the unit s system time is synchronized with public or private NTP servers When stopped the system time is not synchronized and may drift over longer time periods This option is controlled by the Stop NTP button which will terminate any active Session and reconfigure the system If the NTP client has been stopped an additional setting for manual time and date setup appears The NTP client requires a proper DNS configuration to work correctly Selection of this option requires that the network in use allows the Presentation Recorder to access external publicly available time servers If you are on a private or closed network local NTP servers may be listed in the NTP server N fields Disable this selection if acces
6. Serial number LE Architecture Software version Software date Genesis code version FPGA code version REST API version Current date and time USB disk Total disk space Used disk space Free disk space Board Temperature Fan Speed PRGN2RB 201614 0161 PR HD 8 0 12 2014 04 30 6 13 1 0 2010 06 27 13 08 34 disconnected 29 4 GB 0 2 GB 29 2 GB 39 C 100 Serial number of the hardware unit Hardware architecture Software release revision and date e Revision of firmware and FPGA code e REST API interface level e Current system date and time e USB Disk Status e Archive space available e Mainboard temperature Fan speed When reporting problems to NCast it is very helpful to copy and send this information as part of a trouble ticket NCast Corporation Revision 2 2 Page 79 NCast NCast Presentation Recorder Reference Manual 8 2 NETWORK 8 2 1 IP Address Details The Network tab reports the IP address and other related parameters currently in use The MAC address is frequently needed to register this device on corporate or university networks NCast Presentation Recorder Quick Start Channels Archives Configuration Status Network DHCP On IP address 204 89 223 33 Netmask 255 255 255 192 2 Gateway 204 89 223 1 S Primary DNS 204 89 223 4 Secondary DNS 204 89 223 44 Ethernet mode 100 Mb s full duplex MAC address 00 50 c2 06 b0 89
7. 070802 134151 001 mp4 Cerler Ctrlex Drag the slider to the end of the new clip and select an Gay Out point where the new clip ends Cancel Selection Go to Keyframe Ctrl k Revert All Changes Ctri R a ba Revert Trimming Ctri At R m WALLENBERG HALL Fix Timecode Breaks Ctrl F Building Effective Virtual Teams Decision Theatre Deirdre Hahn Media X Summer Institute August 1 3 200 Stanford University ay Video PID Audio PID Audio Mode 0 14 56 17 1 In 4 MPEG Streamclip 1 0 1 2006 Squared 5 ON Edit Window Open Files 0802 134151 001 mp4 Close Show Stream Info Save the file as a new mp4 file You should override the Save As mov suggested suffix with mp4 eel Export to AVI Export to MPEG 4 Export Frame WALLENBERG HALL Building Effective Virtual Teams Decision Theatre Deirdre Hahn Media X Summer Institute August 1 3 2007 Stanford University 0 14 56 17 In 0 00 00 00 Q If this file will be used on a streaming server the hint tracks must be added to the file References NCast Corporation Revision 2 2 Page 107 NCast NCast Presentation Recorder Reference Manual 14 PR HD First Generation 14 1 BACKPANEL CONNECTORS The following connector changes occurred in moving to the second generation product e A Displayport input connector was added e The S Video Y C connector was removed The VGA connector does not accept component
8. 1500 Set audio stream destination Address 239 192 2 1 Port number 111010 MTU 1500 Enable video bandwidth smoothing y Set max audio frames in packet 8 default Set TTL E Previous Next A full discussion of multicast addressing is beyond the scope of this document but briefly summarized there are three classes of multicast addresses typically used by multicast applications Global Addresses The range of multicast addresses 224 0 1 0 238 255 255 255 are used for global communications These addresses are dynamically allocated and not statically reserved These addresses are unsuited for static assignment in the Channel Table GLOP Addresses A document IETF RFC 3180 describes a mechanism for statically assigned multicast addresses in the address space 233 8 based on a formula that incorporates the Autonomous System AS number in the middle two octets The AS number is owned by the ISP providing service to the account and use of a GLOP address must be coordinated with that ISP Administratively Scoped Addresses The multicast address range of 239 0 0 0 to 239 255 255 255 has been defined to be a range of administratively scoped multicast addresses in IETF RFC 2365 These addresses may be statically assigned by the administrator of an organization s network and there will be no conflict with other organization s use of these addresses because border routers on the edge of an organization s network
9. 5 90 90 Record Start Pause Continue Stop 80 20 Main input VGA DVI D DVI A S Video Composite HDMI ch zo 60 60 PiP input VGA DVI D DVI A S Video Composite lt HDMI 50 50 40 40 Graphic overlays Graphic 1 Graphic 2 Graphic 3 Graphic 4 Revision 6 1 7 2011 04 06 E Preview 30 30 Text overlays _ Text1l Text 2 Text 3 Text 4 Channel 1 2 gt 20 20 D 10 10 tae ene Gni us gt A Audio input J Line In Mic In O 2 XLR In V Audio Meter 0 0 Left Right For simple operations such as starting and stopping a Presentation Recorder from a controlling system simple scripts will be adequate For example to start a Presentation Recorder here is a sample script bin bash Starts Presentation Recorder session using telnet interface de S Sine 3 lp tasa echo This script starts a Presentation Recorder session using the telnet interface echo Synopsis start sh address password channel exit fa ADDRESS 1 PASSWORD 2 CHANNEL 3 echo IdTelnet 002 PASSWORD sleep 1 echo Gson sleep 1 echo QT sleep 1 telnet ADDRESS 7474 gt amp dev null Stopping a session utilizes this script NCast Corporation Revision 2 2 Page 99 NCast NCast Presentation Recorder Reference Manual bin bash Stops a Presentation Recorder session using the telnet interface del e 2 le tien echo This script stops a Presentation Recorder session using the telnet interface
10. 8 3 EVENT LOGS 8 3 1 Event logging Many events during the operation of the Presentation Recorder are recorded in the Event Logs These Logs are part of the Event Notification System discussed in Section 7 9 NCast Presentation Recorder WG 4 Quick Start Channels Archives Configuration Status Event Logs Show 10 entries Download Logs Search lt iti is S Time z Type Category gt Event 2012 09 25 16 13 21 Info Archives Archive 20120925 161146 001 ready 2012 09 25 16 13 20 Info Recording Recording stop 2012 09 25 16 13 20 Info Session Session stop on channel 1 A 2012 09 25 16 11 46 Info Recording Recording start 2012 09 25 16 11 42 Info Session Session start on channel 1 succeeded 2012 09 25 16 04 13 Info Audio Audio input set to linein 2012 09 25 15 09 38 Info Session Session stop on channel 1 2012 09 25 15 06 36 Info Session Session start on channel 1 succeeded 2012 09 25 14 57 44 Info Session Session start on channel 1 succeeded 2012 09 25 14 56 59 Info Session Session start on channel 1 succeeded Showing 1 to 10 of 168 entries 2 3 4 5 Next Last 8 3 2 Download Logs Log reporting is an important tool which NCast uses to diagnose any problems whether they hardware or software bugs or operational issues When reporting a problem please click on the Download Logs button which will create a zip file of recently logged activity Make a note of the time of the incident if known and forward this information
11. The Contact name is typically the name of the owner or administrator of the unit responsible for being the source of the generated media stream It could also be the name of the person in charge of the course material being webcast This item is transmitted in real time over the network as an SDES element in the RTP protocol see IETF RFC 1889 for a more detailed description of the Real Time Protocol Other SDES items include the Contact e mail Contact phone Contact location and Contact web page 7 1 3 Contact E mail The Contact e mail should be the address of the owner administrator of the unit or an address where questions or service requests concerning the unit are sent The email address should be formatted according to RFC 822 for example info ncast com 7 1 4 Contact Phone The Contact phone should be the number of the owner administrator of the unit or a number of a service desk which a user could contact for help with regards to the media stream being generated The phone NCast Corporation Revision 2 2 Page 57 NCast NCast Presentation Recorder Reference Manual number should be formatted with a sign replacing the international access code For example a phone number in the United States would appear as 1 800 555 1212 7 1 5 Contact Location The location of the unit The degree of precision of the location is at the discretion of the systems administrator For example one might enter Sunnyvale CA or
12. This Channel Type enables automatic transfer of a Presentation Recorder s SDP file to a streaming server e g a Presentation Server The transfer is accomplished by RTSP ANNOUNCE commands sent from a Presentation Recorder RTSP client to the server The system makes sure that the latest version of the SDP file is always on the server SDP files describe the media being streamed and other details such as port assignments Typically the SDP file is transferred when a session starts and during the session when the SDP file changes The Presentation Recorder issues Announced kill when a session has ended For this field enter the IP address or name of the Presentation Server or other RTSP server NCast Corporation Revision 2 2 Page 40 NCast NCast Presentation Recorder Reference Manual Edit Channel Automatic Unicast Set RTSP server Address o Port number 554 Username A Password 0 SDP filename llive sdp Set video MTU 1500 Set audio MTU 1500 Enable video bandwidth smoothing Y Set max audio frames in packet 8 default Previous Next 5 9 2 Set RTSP Server Port Number Enter the server RTSP port number usually 554 for RTSP based servers 1935 for Flash based servers 5 9 3 Set RTSP Server Username and Password Enter the account Username Password for the SDP file authorization can be empty if authorization is not used 5 9 4 SetRTSP Server SDP Filename The name under which th
13. interface Please check that document for additional setup commands that might be issued At the end of the event period the program issues the End Session command PE No other commands are sent The scheduler program queries the calendar every few minutes Changes to the schedule may be entered prior to this query Once an event has started the event can only be stopped by going directly to the Web in terface of the Presentation Recorder and stopping it manually or waiting for the scheduled stop The scheduler program does not check for conflicts or overlapping events If times overlap for a given Presentation Recorder the results will occur in the order scheduled 7 7 7 iCalendar Overview There are many different calendar applications in use both PC based and Web based NCast provides a facility to utilize these other calendar applications to generate schedules through a file interchange standard known as iCalendar Another situation where use of an iCalendar file would be needed is when immediate access to Google Calendar is not available For example if Presentation Recorders are being utilized to record a conference on a closed network at a hotel without Internet access the scheduler file can be created for all tracks of the conference and used to run all machines during the event 7 7 8 The iCalendar Standard iCalendar is the name for an Internet industry standard from the Internet Engineering Task Force IETF e REC 244
14. 10 1 Windows The Custom Windows page allows users of the Presentation Recorder to define unique dimensions for the Main and PIP windows to be referenced by serial commands This allows a serial command to easily change the position ans size of a window Revision 2 2 Page 76 NCast Corporation NCast NCast Presentation Recorder Reference Manual Windows x Window 1 0 0 1280 720 Window 2 lo o 11280 720 Window 3 0 0 1280 720 Window 4 o o 11280 1720 Window 5 o o 11280 1720 Windows 0 0 fi280 720 Window7 0 0 1280 720 Window 8 0 fo 1280 f720 Window9 0 0 1280 720 Window 10 0 o 1280 720 Note left top width height Apply Cancel 7 10 2 Texts Text formatting variables 0 through 9 may be used to define the Title Presenter and Description fields Normally these variables are initialized and changed through the use of serial commands TA TJ This table lists and allows editing of the ten available text formatting strings a a 6 NCast Corporation Revision 2 2 Page 77 NCast NCast Presentation Recorder Reference Manual 7 10 3 Disk There are four specialized settings that apply to diskspace management These allow the user to fine tune management of the free archive space Disk Trash Can size 50 Disk near full threshold 90 Disk full threshold 95 Remove archives automatically Note All values
15. 2 on your TV defines the video carrier to be 55 25 MHz Channel 2 on a Presentation Recorder might define the graphics multicast address to be 239 192 0 1 There are many parameters associated with a Channel items like the video and audio multicast or unicast addresses port numbers MTU s codecs bit rates layouts overlays and modes of operation Think of a Channel as a type of preset for all of those parameters There are 25 Channels allowed so 25 different presets are available for definition By default the encoder comes with 25 factory defined Channel layouts for the most commonly used inputs and compositions These layouts are not fixed permanently but simply examples of commonly used arrangements Any Channel may be completely customized by the customer simply by overriding the factory default settings _NCast Presentation Recorder il Quick Start Channels Archives Configuration Status Type All Framesize Al Aspectratio All 1 Presentation amp Video 2 Presentation amp HD Video 3 Widescreen Presentation amp HD Video 4 Side by Side Video amp Presentation 5 Full Screen Widescreen Presentation 6 Presentation amp Video on Right 7 Presentation amp HD Video on Right 8 Widescreen Presentation amp HD Video on Right 9 Presentation on Right Once the Channel settings have been established typically by the administrator of the Presentation Recorder or maybe the
16. 74 E USO er ii A A A A NES 76 US A A O AAA A A eee 79 AS re rh A Sead ha tac adie nelle alse E teat OA ER aad E A Cai delaras 79 A a a 80 A A A IA A ad A RAR A EIA EE E RA 80 A AAA A A E E O A OO EA 81 DAI AAA AA AA AA 82 le A A A A O A NO ARI 82 A A A A A NOS 83 AU ORO AS AA A 84 MA A A A a rr Tarenten parti rer re renr ren Sretrenn mone rarer try 86 SEa Pa E A A A O A A oe leat 86 10 Viewer Intertace and Media Players io A AA AA A A A A AA 87 OEA A O ES A E 87 VEZ AE TM IS A AA id 88 10 Meda PLAYERS rs ra A A A A AS A AA AA AAA ESAS 89 TWA Ciosed Capton SU OE E A a din E A onda A A EA A A A 90 UC Tete Pere nc iey tamer tere ttt Pane erent ay mercer thr many eer Tear ere er 93 CLL Prame Layouts 20d PRESETS nr A A AA A A ASA 93 12 Presentation RECO MOMO CES unn A A AA AAA A A E a Aaa 99 a e O E AE A ees 99 Te Telnet MS iii ii lea 99 123 REST Interface Archive Download nia A da AA E A A Ad AA 100 12 4 REST interface Image and Thumbnail Cap tt 100 12 5 REST Inte ace Graphics Overlay Upload ou e iaaa 100 12 6 REST Interface Reference Mantal o e aa 101 13 Techniques f r Presentation Capture qqch A 102 13 1 Webcasting Podcasting and Are PNA SA iakaat eiA 102 13 2 Capung Graphics Video and Audio SS 102 13 3 Conference Day Problems and 1 uu A a E A A EA 104 1S4 Video a e A 106 Te PRAD Rt Mo whe tics het aeons ath A ace tla st ce asin
17. IT or Network department within an organization they will not be changed by ordinary users of the Presentation Recorder The user is instructed to Use Channel 2 and no further detailed instructions are required When a Channel is started the Presentation Recorder begins its broadcast or recording Session All of the many Channel parameters are transferred to the working Session parameters and the encoding and layout parameters defined by the Channel become the current encoding mode and layout of the Presentation NCast Corporation Revision 2 2 Page 26 NCast NCast Presentation Recorder Reference Manual Recorder Any changes or updates to the Channel Table have no effect on the Session until the next Session start Session parameters which may be changed or updated appear on the Quick Start page and on the Custom page Windows and Overlays may be altered during a Session but the initial Frame size and aspect ratio may not change The Frame size MUST remain fixed during a Session 5 1 1 Channel Initiation At the left edge of each channel icon is a Start button Pressing this button activates all the parameters for the Channel and a new Session based on these settings is started 5 1 2 Channel Modification Setup of a Channel started by pressing the Edit key is divided into seven parts 1 Presentation amp Video e General Channel name description and the type of operation e Layout Frame size
18. Lip sync It s a complex problem to solve and sometimes the audio and video are not in sync when they arrive at the encoder due to DSP processing delays for in room equipment or other causes Revision 2 2 Page 85 NCast Corporation NCast NCast Presentation Recorder Reference Manual This control panel allows timing adjustment for audio allowing fine control over aligning video and audio sync to match perfectly Advanced Settings x VGA amp DVI A DVI D HDMI Composite S Video Layout AV Sync Audio delay ms 18 0 The range of adjustment is 500 milliseconds 9 4 OVERLAYS 9 4 1 Image Overlays Enables or disables display of uploaded graphical overlays 1 4 Overlay graphics are initialized from the Channel Table presets Video Overlays E 1 2 3 4 Image overlays On Off Off Off Off Off Off Off Text overlays Edit Edit Edit Edit The settings of these buttons are OVERWRITTEN during Session start 9 4 2 Text Overlays Enables or disables display of text overlay 1 4 Text overlays are initialized from the Channel Table presets and after Session start may be changed though use of serial commands or via the Edit button shown above The settings of these buttons are OVERWRITTEN during Session start 9 5 PREVIEWS This button launches a new web page with a single frame capture of the composite image currently being encoded and compressed Provides an excellent confidence check of
19. Recording continue Archive upload Archive download Disk full Disk nearly full Empty archive trash Resize archive trash Scheduler start event Scheduler stop event J Lost Google Calendar connection C Archive ready C Archive remove Archive restore Telnet connected Telnet disconnected Cancel Apply There are two methods by which to choose a notification to be reported e Select by event type Any event which is assigned the selected severity level is reported Selecting Info will report Info level events but not others You must also select Critical and Error to be informed about events classified as Critical and Error e Select by event name Any activity identified by the given name is reported It does not matter if the type box is checked or not the report is issued So a typical strategy for using this selection page is as follows First select the severity level desired for reporting Typically this would be Critical and Error unless there is an interest in the more frequent and less interesting Warning and Info messages Next select particular events of interest to be reported Perhaps Session start and Recording start are required The net result is that all Critical and Error messages will be generated and Info level messages about Session start and Recording start will be sent as well 7 10 CUSTOM 7
20. Where 204 89 223 15 Add guests map id Calendar NCast Corporation Created by Hank Magnuski Description C1 7 Add Guests can modify event Y invite others Y see guest list Reminders No reminders set Add a reminder Showmeas O Available 2 Busy Privacy Default O Public Private Publish event Back to calendar Save Discard changes The What field Title shown above must contain anywhere in the field the letters PR720 to identify this as a Presentation Recorder event Additional words can further describe the nature of this entry e g Chem 101 Weekly Staff etc The When field Dates shown above is used to delimit the start stop times for the event The drop down menu only shows hour half hour entries but by clicking again on the time field arbitrary times may be entered The repeat options allow multiple occurrences of this event If a stop time of 11 00 am is listed the program uses 10 59 59 as the actual stop time Thus events may be scheduled back to back The Where field is the DNS name or IP address of the Presentation Recorder to be controlled Only one Presentation Recorder may be listed This allows one calendar to control many different units The Calendar field must be the primary or default calendar for this account The Description field is a series of serial IP commands to be issued to the Presentation Recorder at the time of the Start event se
21. and placement of the Main and PIP windows e Profile Bit rate frame rate and quality settings Network Setup of multicast and unicast addresses MTU s and TTL Recording Recording filename title and description e Upload FTP or Secure FTP server names and passwords USB or Presentation Server e Notifications E mail reports of important Channel events The paragraphs which follow describe in detail each of these parts 5 1 3 Channel Export Import A Channel s setup with all required parameters and settings may be exported to a zip file This provides for off line backup Use of the Import button allows restoration of the channel or copying of the parameters from one channel to another 5 2 Epir CHANNEL GENERAL 5 2 1 Set Channel Name Each channel can be assigned a name and these names can reflect the functional use of the channel The factory default settings name the channels in correspondence with their layout properties Another example might be International Sales Team Update for corporate usage Engineering Collaboration in the case of departmental usage San Francisco designating some geographical assignments or Chemistry 101 designating course related usage Additional descriptive text may be added in the description field NCast Corporation Revision 2 2 Page 27 NCast NCast Presentation Recorder Reference Manual Edit Channel General Set channel name Presen
22. are talking so using a right hand setup for a left hand podium gives unnatural looking results and should be avoided Most of the graphics used will probably be symmetrical and so the re arrangement will not be difficult but must be planned for in advance 13 3 2 The Conference Chairperson The meeting Chairperson or Master of Ceremonies MC needs to be informed that a webcast recording is happening and that there are certain things he she can do to assist in a quality recording e Clean Breaks The MC should arrange to have a clean introduction to each new speaker or topic i e Power point all setup and ready to go no fumbling around trying to find and start the next slide show and a clean break at the end so that recording can stop and video tapes can be changed overlay graphics updated and recording restarted In many cases the MC starts NCast Corporation Revision 2 2 Page 104 NCast NCast Presentation Recorder Reference Manual introducing the next speaker while the previous speaker s graphics are still being projected The speaker is given the podium while his her computer is being connected and the desired graphics being discussed are not present Viewing this later in a recorded archive looks very unprofessional and sloppy With just a little care the MC can make some interesting comments on the previous speaker or can make small talk or tell a story while this speaker transition is occurring It is hard to capture clean r
23. box lists the current release s of software available for this Presentation Recorder If no information is listed then there is a problem reaching the update server The network Update Tool requires HTTP access to the external Internet to function correctly If this access is fire walled or if the HTTP proxy settings are not correctly employed then update listings and software updates are not available There may also be a problem with the settings for the DNS servers as well Once the Update button is pressed the Presentation Recorder downloads a list of required files and their timestamps Files which are missing or out of date are downloaded and installed The unit will then reboot and becomes ready for service again with the new software release Configuration files are not altered during this process All Unit Channel Source and other settings should remain intact through this update File system verification and new file download may take some time so allow the unit to reboot on its own and do not prematurely hit the reset switch as that could damage the filesystem and cause the unit to fail to restart NCast Corporation Revision 2 2 Page 25 NCast NCast Presentation Recorder Reference Manual 5 The Channel Table 5 1 CHANNEL SETTINGS A Channel is a preset or template a collection of parameter settings that defines the operating characteristics for a streaming webcast or a recording session Just as Channel
24. control selects the primary audio input source If recording in Mono make sure the active audio is available on the LEFT channel Audio over HDMI or audio over SDI is not currently supported Audio Sources O Input Mic b Line in XLR Input gain w 21 Output gain 100 Loopback gain 0 9 2 2 Audio Microphone Gain The audio microphone gain adjusts the signal level from the microphone to the input of the audio codec A reference signal of 40 0 dBu 7 75 mV RMS will produce maximum sample values when the Mic Gain is set to a value of approximately 90 If this is considered the internal 0 0 dB signal reference the chart shows gain adjustments for different values of Mic Gain 9 2 3 Audio Line In Gain The audio line in gain adjusts the signal level from the line in connector to the input of the audio codec A reference signal of 0 0 dBu 0 775 V RMS on the line in connector will produce maximum sample values with the line in gain set to approximately 21 If this is considered the internal 0 0 dB signal reference the chart shows gain adjustments for different values of Line in Gain If recording in Mono make sure the active audio is available on the LEFT channel 9 2 4 Audio XLR Gain The audio line in gain adjusts the signal level from the line in connector to the input of the audio codec NCast Corporation Revision 2 2 Page 83 NCast NCast Presentation Recorder Reference Manual A reference signal of 0 0
25. description field will be used for example in automatically creating RSS feeds for the recording once it has been uploaded to an Presentation Server Once a recording has commenced the description information may be updated on the Archives page Special text variables 0 9 may also be entered in this field See discussion below 5 10 6 Set Max Recording Time in minutes The Maximum Recording Time specifies when a recording should be unconditionally stopped This value is used to prevent runaway recordings where the presenter forgets to press the Stop button on the control panel interface and the unit might be left recording all weekend long The time value is in minutes and the default is 10 hours 5 10 7 Add Hint Tracks to MP4 File Streaming servers require some additional information about the contents of a media file to optimize delivery for remote clients An additional track called a hint track contains this information If the file is to be used with a streaming server this option must be checked If streaming is not required uncheck to save on file processing and to reduce the file size 5 10 8 Optimize MP4 File Layout Sometimes a media file is placed on a web server and is played without the assistance of a streaming server In such instances the location of the media data required for progressive download needs to be optimized Optimization rearranges the audio and video blocks within the file Optimization does not si
26. encoder option it doesn t affect the decoder 5 9 8 Set Maximum Audio Frames in Packet Sets how many AAC frames can be sent in one packet The default value is 8 The valid range is from 1 to 10 Lower values result in lower network jitter and lower latency but higher network overhead each packet contains additional headers Set to 1 to achieve extra low audio latency This is an audio encoder option it doesn t affect the decoder 5 10 EDIT CHANNEL RECORDING 5 10 1 Recording Options Two options are available for control of recording Edit Channel Recording Set recording filename Y m d H MY S n Set recording title Channel 2 Set recording presenter Presenter Set recording description Set max recording time in minutes 60 Add hint tracks to MP4 file Optimize MPA file layout Enable Final Cut compatibility fix Enable blackout on pause amp resume Previous Next e Manual Recording must be started and stopped by the user via controls on the Quick Start page or by the room controller via one of the serial interfaces or via the REST API e Auto Recording starts automatically when the Session starts NCast Corporation Revision 2 2 Page 42 NCast NCast Presentation Recorder Reference Manual 5 10 2 Set Recording Filename The default archived filename is of the form 20071119 143206 001 mp4 which represents the start time of the recording through use of
27. expressed in percentage of total disk space Apply Cancel 7 10 4 Trash Can Size The Trash Can size specifies how much of the disk may be used to store trashed deleted or removed files If the trashed files exceed the spec then the oldest ones are removed until the trash limit is reached Trash cleanup is normally done just prior to the start of a new recording 7 10 5 Disk Threshold These settings are for Event messages They may trigger mail to the system administrator that the disk needs cleanup They do not directly contribute to file cleanup or removal They are simply warning trigger levels 7 10 6 Remove Archives Automatically The Remove Archives Automatically checkbox will cause unconditional and unquestioned removal of archives as space is needed This policy should be used with caution and assumes that it s better to throw away old recordings without asking or knowledge of the administrator than to stop a new recording because of lack of available disk space A new large or runaway recording could delete the entire contents of the Archive disk with this item checked NCast Corporation Revision 2 2 Page 78 NCast NCast Presentation Recorder Reference Manual 8 Status 8 1 SYSTEM 8 1 1 Serial Number and Revision Information The System tab lists current information about this system including System NCast Presentation Recorder Quick Start Channels Archives Configuration Status
28. from 128 kbps to 3 Mbps In the Channel factory presets the Presentation Recorder provides podium left and podium right pairings of the example Channels Podium Left Podium Right Channel 1 Channel 6 Channel 2 Channel 7 Channel 3 Channel 8 Channel 14 Channel 23 Channel 15 Channel 24 11 1 3 Customer Layout Examples NCast customers and associates have created some outstanding examples of graphically interesting and aesthetically pleasing layouts using this overlay facility The following are some examples of captures done from live conferences inFORMATION YEAR 06 07 A MOBILE HOSPITAL SS A HASTAC Conference courtesy of Duke University NCast Corporation Revision 2 2 Page 97 NCast NCast Presentation Recorder Reference Manual Donna Coxmpe Fle Edt View Wrdow Heb Pry NCast Corporation ry TeraGrid 2806 Invited Plenary Talk Professor Donna Cox Director of Visualization and Experimental Technologies NC dune 14 2806 The Ter ct partners CSA SDSC Argonne PSC ORNL urdue Indiana and TACC IBM Sun Microsystems iver EMC Dell Cray Juniper comer 4 Y L PADAO TeraGrid Conference courtesy of UCSD The Decision Theater is fc i Solutions ustainability ation and Where Policy ommunity Collabor WALLENBERG HALL Explore Tomorrow s Solutior Building Effective Virtual Teams A Laboratory nbine
29. signals Y Pb Pr Only on DVI A e The position of the VGA Loopback has been swapped with the VGA input e The PIP function with HDMI and DVI is no longer supported e There is an HDMI Output option Extreme and Ultra units e There is a 3G SDI input option Ultra unit e Balanced audio input is via Phoenix style connectors on the rack mount units VGA Serial Control Ethernet XLR Audio or VGA Loopback RS 232 Input Component Output i a Serial Port LAN USB Q VGA Component In VGA Loopback D a YIC In Composite In DVI In iaai SAE s oE RR VGA Component Out i RGB Component USB Line In HDMI DVI I Y C Composite Output Line Out Input Input Input Video Input RGB Y Pb Pr Mic In PR 720 and PR HD First Generation Backpanel NCast Corporation Revision 2 2 Page 108 NCast NCast Presentation Recorder Reference Manual 14 2 MAIN PIP INPUT COMPATIBILITY CHART The following chart outlines the Main PIP compatibility for the first generation product MAIN PIP VGA DVI A DVI D HDMI S VIDEO Composite Duplicate No Yes Yes Yes Yes Duplicate N A Yes Yes Yes DVI D Yes N A Duplicate Yes Yes Yes Yes Yes Yes Duplicate Yes Yes S VIDEO COMPOSITE Yes Yes Yes Yes Duplicate No Duplicate Revision 2 2 NCast Corporation Page 109 NCast NCast Presentation Recorder Reference Manual 15 Terms and Definitions 15 1 AUDIO AND VIDE
30. target settings from the Channel Table entry and uses that target information to upload the recording Thus the Upload All Archives operation may result in the transfer of existing archives to many different target sites 5 11 7 File Transfer Protocol Select File Transfer Protocol and fill in the required fields Edit Channel Upload Automatically upload recordings Y When to start uploading immediately Remove recording after upload is finished Primary Secondary Set upload method Connection Test File Transfer Protocol Upload XML file 4 Set server Set port number 21 Enable anonymous login 4 Set upload directory Previous Next 5 11 8 Upload XML File The XML file is a metadata file containing everything the recorder knows about the frecording It can be used for automatic indexing and processing of the file Keep this checked unless the XML is not used and does not need to be uploaded 5 11 9 Set Server Enter the IP address or DNS name of the server NCast Corporation Revision 2 2 Page 47 NCast NCast Presentation Recorder Reference Manual 5 11 10 Set Port Number Enter the server port number for the protocol in use 5 11 11 Enable Anonymous Login For FTP transfer the use of anonymous login does not require any credentials 5 11 12 Set Username The user account for the server 5 11 13 Set Password The password required for the user account
31. that the presentation is in the same time relationship as the source Mic Level Sound level signals typically in the range of 70 dBu to 30 dBu MPEG Compression MPEG is an acronym for Motion Picture Experts Group an industry wide committee which has defined a series of standards for the compression of audio and video source material MTU The maximum transmission unit is the maximum number of bytes permitted in a transmitted packet Multicast A family of computer transmission protocols where multiple receivers access a single transmitted packet stream PIP A picture in picture function overlays one video or graphics image with a reduced sized version of another video image Presentation Server NCast s Open Standards video and presentation content management system and video on demand server REST REpresentational State Transfer REST is a style of software architecture for distributed systems such as the World Wide Web RFC Request for Comments an Internet protocol standard RTMP Real Time Messaging Protocol was initially a proprietary protocol developed by Macromedia for streaming audio video and data over the Internet between a Flash player and a server Adopted by Adobe and YouTube it is now widely used on the internet for streaming video NCast Corporation Revision 2 2 Page 110 NCast NCast Presentation Recorder Reference Manual RTSP Real Time Streaming Protocol is an IE
32. to NCast for analysis NCast Corporation Revision 2 2 Page 80 NCast NCast Presentation Recorder Reference Manual 8 4 SERIAL LOGS 8 4 1 Serial Command Logging Serial command activity can be initiated from the RS 232 connector or the Telnet interface Serial commands are also used with the Scheduler interface This screen allows inspection of recent activity for the Serial link NCast Presentation Recorder Wi 4 Quick Start Channels Archives Configuration Status Serial Logs Show 10 entries Download Logs Search Time z Command 2012 09 25 17 35 15 2012 09 25 17 35 15 amp 2012 09 25 17 35 15 E 0 G3 V2 A2 21 00 100 01 0 C1 L1 M0 10 J0 S0 R0 T N r0 Q0 U0 u 0 D0 p1 b0 m1 mnw c1280x720 a1280 720 W320 0 960 720 w0 0 2012 09 25 17 35 15 2012 09 25 17 35 15 ma 2012 09 25 17 35 15 amp 2012 09 25 17 35 15 43 6 47 1 100 0 100 0 2012 09 25 17 35 15 ma 2012 09 25 17 35 14 2012 09 25 17 35 14 8 Showing 1 to 10 of 155 entries 2 3 4 5 Next Last a 8 4 2 Download Logs Log reporting is an important tool which NCast uses to diagnose any problems whether they hardware or software bugs or operational issues When reporting a problem please click on the Download Logs button which will create a zip file of recently logged activity Make a note of the time of the incident if known and forward this information to NCast for analysis NCast Corporation Revision 2 2 Page 81 NCast NCast Pre
33. to stream and record a high bandwidth high resolution stream and the second encoder provides for a reduced resolution reduced bandwidth stream Dual wide screen delivery One encoder transmits a hi def camera stream and the second transmits a wide screen presentation Telepresence at a budget price Synchronized Encoders Two HD wide screens side by side giving a dual HD panorama or a 3D left right image e Two way Interactive One encoder is configured for streaming send and the second is setup for streaming receive e Fail Safe System Each encoder independently transmitting the same material Should one fail the receivers can switch to the other Hot Standby A spare unit for critical applications PR HD Basic P A flange mounted unit with streaming and archiving capabilities This is a very small form factor chassis suitable for mounting on the walls of a podium on top of or underneath a podium shelf in a mobile cart or on a wall in an equipment room PR HD Basic M A desktop unit with streaming and archiving capabilities This is a very small form factor case suitable for desktop or mobile cart applications All PR HD Series units share a core operating system and base set of features The mainboard and connector set is similar for all units Please review the product spec sheets for further details 1 4 PRESENTATION RECORDERS EXTREME MODELS The Presentation Recorder Extreme has all the
34. unique S FTP information different S FTP sites may be accessed by starting or using different Channels For example if the Session starting at 9 00 am needs to be uploaded to Dept A s server and the Session starting at 10 00 am needs to be uploaded to Dept B s server this is easily accomplished by specifying different S FTP sites in the Channel Table Or if some uploads go to a local on campus server and if other uploads go to a remote CDN server the Channel Table settings may be used to differentiate the upload repository for each different recording Information about what Channel was used to record an archive is retained with the archive If later from the Archives page a new upload or re upload is requested the system extracts current S FTP settings from the Channel Table entry and uses that S FTP site information to upload the recording Thus the Upload All Archives button may result in the transfer of existing archives to many different S FTP sites 6 1 4 Edit Button Along with every archive file an associated text file in XML format is kept with additional information about the archive The Edit button allows entry of Title Presenter and Description comments into this file These entries may be made during the presentation or afterwards 6 1 5 Remove Button Places the archive file into the Trash Files may be recovered from the Trash Can if they have not yet been automatically deleted by the s
35. 02 134151 001 mp4 Ctrl T Ctrl x Curie B Decision THe aren In Select Out o Cancel Selection x Go to Keyframe Ctrl K brmation with remote users and Revert All Changes Ctri R Revert Trimming CtritAt R Fix Timecode Breaks Ctrl F Building Effective Video links amp recorders to share and or document interactions Virtual Teams Decision Theatre Dedicated server support Deirdre Hahn Media X Summer Institute August 1 3 2007 Stanford University Video PID Audio PID Audio Mode 0 10 20 00 D NCast Corporation Revision 2 2 Page 106 NCast NCast Presentation Recorder Reference Manual M MPEG Streamclip 1 0 1 2006 Squared 5 DR Fie ETS window 070802 134151 001 mp4 Trim Ctri T Cut Ctri X Align the In point to the nearest key frame This is ae aes required to eliminate pixelation and picture breakup at the Select In Select Out start of the new clip If that key frame is unacceptable as puestos a starting point move the slider backward or forward until es E a usable key frame is found Revert Timing CARR WALLENBERG HALL Fix Timecode Breaks Ctrl F Building Effective Video links amp recorders to share and or document interactions Virtual Teams Decision Theatre Dedicated server support Deirdre Hahn Media X Summer Institute August 1 3 2007 Stanford University Video PID Audio PID le 010 2408 In Out Trim 4 MPEG Streamclip 1 0 1 2006 Squared 5 Fie EG Window
36. 3 8 D Meyer June 2001 IETF RFC 2365 Administratively Scoped IP Multicast D Meyer July 1998 IETF RFC 2327 SDP Session Description Protocol M Handley et al April 1998 NCast Corporation Revision 2 2 Page 112 NCast NCast Presentation Recorder Reference Manual 17 Revision History e Revision 2 2 Update document and diagrams to cover the second generation of Presentation Recorders Updates based on software Release 8 0 13 e Revision 2 1 Updates based on software Release 6 6 0 Addition of a PIP Enable Disable button Buttons for live updates of text overlays New Channel types to support RTMP protocol streaming An additional upload method supporting Kaltura servers e Revision 2 0 Updates based on software Release 6 5 0 Introduction of the REST API based GUI e Revision 1 2 Updates based on software Release 6 4 5 e Revision 1 1 Updates based on software Release 6 1 7 There is a new Date amp Time configuration screen Also a new option to set the Max Recording Time on the Channel Settings Recording tab Transcode functions have been dropped from the product due to excessively long processing times The PR 720 S model has been discontinued e Revision 1 0 Initial revision based on software Release 6 0 0 NCast Corporation Revision 2 2 Page 113
37. 4 NCast NCast Presentation Recorder Reference Manual 4 7 6 Software Update NCast regularly releases new software revisions for its encoders with many updated features new functionality and bug fixes The Software Update Icon brings up a dialog box with these choices e Network The update will use the Internet to reach NCast s update server e USB Disk The encoder is off net and a USB thumb drive will supply the required files The Network option is normally used to update the encoder and in the case of a closed or secure network requiring USB drive files please contact a customer support person at NCast for assistance in doing a USB update To do an Update first use the Status tab to determine what release the encoder is currently using Then click on the Software Update Control Icon and select Network After the Network selection is made the dialog panel displays the update revision levels available Software Update O Consult with NCast Corporation before downloading an update 6 5 0 6 6 0 Update Cancel If the encoder is not on the latest release select the desired revision and click Update All necessary update files will be downloaded over the net and the encoder will reboot once the new firmware has been installed The Support section on NCast s website contains Release Notes outlining what features or fixes have been implemented in the latest firmware The Software Update dialog
38. 5 Internet Calendaring and Scheduling Core Object e REC 2446 iCalendar Transport Independent Interoperability These standards specify the format and contents of a file usually a ics file which contains text strings describing calendar events The sample below is a small portion of a typical iCalendar file EGIN VCALENDAR RODID Google Inc Google Calendar 70 9054 EN ERSION 2 0 ALSCALE GREGORIAN ETHOD PUBLISH WR CALNAME NCast Corporation WR TIMEZONE America Los_ Angeles EGIN VTIMEZONE ZID America Los Angeles LIC LOCATION America Los Angeles EGIN STANDARD TZOFFSETFROM 0700 TZOFFSETTO 0800 Wx0D gt xx5 5Q0s lt X vO NCast Corporation Revision 2 2 Page 70 NCast NCast Presentation Recorder Reference Manual TZNAME PST DTSTART 19701025T020000 RRULE FREQ YEARLY BYMONTH 10 BYDAY 1SU END STANDARD NCast Presentation Recorder WO 4 Quick Start Channels Archives Configuration Status Scheduler Google calendar Y View Google Google username View Calendar Google password Google keyword PR720 Upload Calendar iCalendar Apply The iCalendar file interchange standards are not associated with the popular Macintosh program iCal or any other specific calendar application The files provide a standard way to export import and exchange calendar events ToDo s meeting invitations and blog entries between different computer applications and indeed many differ
39. 5 11 14 Set Upload Directory The name of the directory where archives will be placed which may be an absolute or relative name from the home directory of the account 5 11 15 Upload Directory Special Parameter The upload directory name may include a special codes n which will modify the directory name based on the Channel number For example if the FTP upload directory path is written as pr hd Class n archives then for files completing a Channel 1 session the effective upload directory will be pr hd Class 001 archives and for files completing a Channel 2 session the effective upload directory will be pr hd Class 002 archives This provides for automatic placement of uploaded files into directories based on the channel number which was used for recording Changing directories based on Channel number may help ease the administration of many incoming files being recorded and uploaded by a single Presentation Recorder Directory based access rights will automatically restrict viewers rights to the directory channel for which they are entitled 5 11 16 Secure File Transfer Protocol Secure FTP SFTP is supported with password and private key authorization It will first try to use private key and if it fails password authorization is used Only SSH 2 protocol is supported The private key should be in Open SSH s SSH 2 format or PUTTY s SSH 2 format or ssh com s SSH 2 format and can t be password protected Use the Upload P
40. Another example would be to set the Primary choice to Presentation Server for local content distribution and the Secondary choice to FTP the file to a remote CDN service The Upload settings are on a per channel basis so use of different Channels can facilitate upload to different places when the archive is ready 5 11 5 Connection Test NCast Corporation Revision 2 2 Page 46 NCast NCast Presentation Recorder Reference Manual The PR HD will try to connect to the server and list contents of the upload directory It uses the current configuration of all parameters 5 11 6 Multiple Upload Locations The Upload information is specified on a Channel basis Since each Channel has its own unique target information different target locations may be accessed by starting or using different Channels For example if the Session starting at 9 00 am needs to be uploaded to Dept A s server and the Session starting at 10 00 am needs to be uploaded to Dept B s server this is easily accomplished by specifying different target sites in the Channel Table Or if some uploads go to a local on campus server and if other uploads go to a remote CDN server the Channel Table settings may be used to differentiate the upload repository for each different recording Information about what Channel was used to record an archive is retained with the archive If later from the Archives page a new upload or re upload is requested the system extracts current
41. August 1 3 2007 Stanford Virtual Teams Conference courtesy of Media X 20070604 00 3716 001 Fle Ede View windon Help IIE ACM Press 1988 The Design and Development of a Family of Personal Computers for Engineers and Scientists orons o BE HP Historical Presentation Revision 2 2 Page 98 NCast NCast Presentation Recorder Reference Manual 12 Presentation Recorder Interfaces 12 1 SERIAL INTERFACE Commands to control the Presentation Recorder over an RS 232 style serial interface are documented in the Presentation Recorder Serial Interface Specification Please refer to that document for complete details 12 2 TELNET INTERFACE Commands to control the Presentation Recorder over an IP network interface using industry standard Telnet protocol are documented in the Presentation Recorder Serial Interface Specification Please refer to that document for complete details NCast offers several example programs which allow operation of the Presentation Recorder using the Telnet Interface One such program is called the Presentation Recorder Management System and there is a version written in Java and Python See the Download area of the NCast web site An example of the interface implemented by TMS is shown here PR720 204 89 223 32 No Session Session Start Stop PiP Swap 100 100 Audio Audio TH IETF MEETING T
42. California Cenic 20140311 164856 B 2500 mp4 Cenic 2014 Conference Developing Pedagogical Content via Smarter Balanced Assessments SBAC gt Cenic 20140311 163016 B 2500 mp4 Cenic 2014 Conference Ubiquitous Broadband Connectivity Essential for Student Success in Rural Northern Californi Cenic 20140311 161707 B 2500 mp4 Cenic 2014 Conference The Opportunities and Challenges of a Locally Open Online Course LOOC gt Cenic 20140311 160046 B 2500 mp4 Cenic 2014 Conference Minecraft in the Middle School Classroom Cenic 20140310 142814 B 2500 mp4 Cenic 2014 Conference California s Next Generation Assessments in K 12 Cenic 20140310 132941 B 2500 mp4 Cenic 2014 Conference What s Happening in the National Internet2 K20 Initiative Cenic 20140310 130640 B 2500 mp4 Cenic 2014 Conference DPLA The Digital Public Library of America Showing 1 to 12 of 12 entries The estimate for recording time is a simple calculation based on the bit rate set for the channel Take the bit rate set for the channel in use and divide by eight to get the bytes second of archive space needed Multiply by 3600 to get the bytes required per hour So for a 5 Mbps stream graphics plus audio we estimate 625 000 bytes second or 2 25 GB per hour If we use a 16 GB archive disk that s about 7 1 hours of recording The disk size in the unit is noted at the beginning Archive page The resolution and frame rate of a channel aren t as important as the max bit rate set for o
43. Ethernet Podium Camera optional Presentation Recorder Typical Room Installation NCast Corporation Revision 2 2 Page 11 NCast NCast Presentation Recorder Reference Manual 2 Quick Start 2 1 STARTUP 2 1 1 A Really Short Start Here s a very short description on how to get started 1 Plug the unit into a network with DHCP plug in a display to the VGA Out plug your laptop into the VGA In a camera if you have one into a video connector and turn on the power 2 When you see the bootup screen with the IP network address log into the unit at http ipaddress using admin as the user and ncast as the password 3 On the Quick Start page select your Channel Layout your Video Sources your Audio Sources and then press Streaming Start 4 Click on the Streaming View button press Launch Quicktime Player in Window and you re done NCast Presentation Recorder WI EI amp ie Quick Start Channels Archives Configuration Status Channels Select a Layout q 7 i e gt E les N Cast NG Sources Video Audio Advanced Overlays Preview Streaming Stop Recording Pause Stop Title Session Sending i Recording Input Output _ Main PIP od RTTA sita algal k PODA L CUOTA Y Y Automatic Unicast AAC 44 1kHz M 64kbps 3 14 MB 20000000001 RUMI 2 1 2 Mini Start This is a short introduction on how to get started with a Presentation Recorder 1 Plug the unit int
44. HD agent supports protocol versions 1 2c and 3 The following MIBs Management Information Base are included in this implementation SNMPv2 MIB IF MIB RFC1213 MIB IP MIB IP FORWARD MIB TCP MIB UDP MIB HOST RESOURCES MIB DISMAN EVENT MIB NOTIFICATION LOG MIB For security reasons and to prevent unwanted use and probes of your network it is advised to change all the default settings in the SNMP configuration window to private custom values SNMP SNMP Y Community string public Security name snmp3 Authentication password 12345678 Privacy password 12345678 Apply Cancel 7 3 16 Community String In Versions 1 and 2c of the protocol the community strings identified sets of resources to monitor and some of these resources could be read only and some could be read write In most default installations of SNMP the community string public is read only and returns limited basic information about the system being monitored Use of Version 1 or 2c protocol is considered to be insecure as clear text is used and this is easily compromised 7 3 17 Security Name In Version 3 a Security Name is similar to a username on other systems It identifies an authorized user of the system 7 3 18 Authentication Password Authentication is performed by using a user s authentication password to create an authentication key to sign the message being sent The signing key is generated from a password
45. NCast NCast Presentation Recorder Reference Manual NCast Product Documentation Presentation Recorder Reference Manual Revision 2 2 May 29 2014 PR HD Software Release 8 0 13 Copyright NCast Corporation 2014 NCast Corporation Revision 2 2 Page 1 NCast NCast Presentation Recorder Reference Manual Table of Contents AU A AAA 6 LA O rh ea dle a eh oe Aca hoe ae aang hey ey 6 RAOUL WS ATG O lara masneee balance el aad tect ciara mln Sk 6 1 3 Presentation Recorders Basic Models ooo rra dr dd A A AAA 6 1 4 Presentation Recorders Extreme MOJEIS ooooooccconcccncccccocinonocinonecanonicononarononarnnnnaroneninonoononorcnnoninonss T 1 5 Presentation Recorders Ultra Models eee ee eee eee eee eee seep eee eee e eee eee eee seeeeseeeseeeeeseneeeenes 7 1 6 Presentation Recorders Connector ODNOMS ici A it 8 1 7 Presentation Recorders Generation 1 vs Generation Z occooccccncncconinonecaninccnnncninineninonirancncininoninones 10 1 8 Presentation Recorders Phoenix Connector WIFI da 10 19 Presentation Recorders stato yr id diia 11 LIME A A A is 12 A A O 1z 3 1 Presentation Recorder Component Block Diagrai sii i iai 17 62 Capture Module FIN CU OU scaner doi AR iS AA RS A 17 TA MA SNM a vce a aAa aa a a a 18 e P E E O AS A E A A AE Ona n
46. O TERMS AND DEFINITIONS A complete discussion of MPEG compression Internet streaming webcasting protocols and related topics is beyond the scope of this document Other sources cover this material in great detail The following are brief definitions of some of the terms used throughout this manual AAC Advanced Audio Coding a wideband audio encoding and compression algorithm Auto detect A capability to automatically sense if an input signal graphics or video is present and to lock onto that signal without further manual intervention CIF Describes an image or display surface with a resolution of 352x288 pixels DVI Digital Visual Interface a digital interface standard which provides for connection to LCD panels and displays H 264 A compression format that delivers very high quality video at low bit rates MPEG 4 Part 10 utilizes the H 264 codec for transmission HD SDI 3G SDI Hi Def Serial Digital Interface a coax based standard for digital video signal interchange IETF Internet Engineering Task Force the standards body for Internet protocols ISO International Standards Organization Latency The end to end time delay between a change in the source image and the corresponding change in the remotely displayed image Line Level Sound level signals typically in the range of 10 dBu to 30 dBu Lip sync The synchronization of independent audio and video streams at a receiving decoder so
47. TF approved protocol for control of real time streaming on the Internet S Video A video connector usually DIN style where luminance and chroma information are transmitted on separate wires or cable pairs Provides for a higher fidelity image than a composite connection SDI Serial Digital Interface a coax based standard for digital video signal interchange SDP Session Description Protocol for describing streaming media transmissions SIF Describes an image or display surface with a resolution of 320x240 pixels SVGA Describes an image or display surface with a resolution of 800x600 pixels SXGA Describes an image or display surface with a resolution of 1280x1024 pixels The aspect ratio for SXGA is 5 4 Support for a 4 3 aspect ratio is accomplished by utilizing a 1280x960 subset of the display surface Telnet An IP network based protocol which was originally used to connect remote consoles and terminals to mainframes but is now used as a general bi directional byte oriented communications facility See RFC s 854 and 855 Unicast Refers to a point to point connection between two Internet host machines UXGA Describes an image or display surface with a resolution of 1600x1200 pixels VGA Describes an image or display surface with a resolution of 640x480 pixels WUXGA Describes an image or display surface with a resolution of 1920x1200 pixels WXGA Describes an image or display surface with a r
48. Washington DC 20402 telephone 1 202 512 1800 WARNING Changes or modifications not expressly approved by the party responsible for compliance to EN 55022 Rules could void the user s authority to operate the equipment ICAN Class A Digital Equipment This Class A digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil num rique de la classe A respecte toutes les exigencies due R glement sur le mat riel brouilleur du Canada NCast Corporation Revision 2 2 Page 5 NCast NCast Presentation Recorder Reference Manual 1 Introduction 1 1 PURPOSE The NCast Presentation Recorder Reference Manual is intended for the Audio Video or Network engineer who will be tasked with the job of installing and setting up a Presentation Recorder or a system of multiple Presentation Recorders This guide is designed to cover topics in depth and to assist in optimizing the performance of a Presentation Recorder 1 2 DOCUMENT OVERVIEW This document is divided into two major sections the theory of operation and a discussion of parameter settings 1 3 PRESENTATION RECORDERS BASIC MODELS The Presentation Recorder is a stand alone network communications appliance which captures RGB VGA Composite Component DVI HDMI Displayport and optionally 3G SDI signals from a desktop or laptop compresses the image with an industry standard compression algorithm records the captur
49. ace OOOO MOS e213 To show them something maybe a presentation or brochure 00 00 08 44 But they were far away 00 00 10 00 You could call them but audio alone is not enough DOS OS 1S 00 You could video conference OOSOO 215 00 but that lacks graphics and only works for small audiences ORO OBESE On You could get on a plane or you could telepresent NCast Corporation Revision 2 2 Page 91 NCast NCast Presentation Recorder Reference Manual DOS 00321 38 ntroducing the NCast PR HD Series Recorders 00 00 24 07 the easy and affordable way to present when your audience is not present 0000327 3 00 00 33 46 The PR HD Series Recorder is an all in one multimedia production appliance 10 4 3 Captioning Software MAGpie 1 0 can be used to export the captions to three multimedia formats SAMI RealText Apple s Timed Text and SMIL which can also be used by Apple and Real Magpie 2 02 is the newest version and adds functionality for Flash and can play NCast s MPEG 4 media files The tool can be found here http ncam wgbh org webaccess magpie v2 World Caption is a program written by a University of Wisconsin staff member and is distributed free See http www journalism wisc edu worldcaption World Caption is a program for adding captions to a QuickTime compatible video using a transcript of that video While World Caption cannot be used to generate a transcript it mak
50. al Clicking the green arrow expands the slider to reveal an additional set of Icons A Ey 4 sq LW Ed e y The function of these Icons left to right is listed below 4 7 1 Reboot Restarts the unit and reinitializes all processes This operation may be needed to clear problems after a power brownout or other unexpected glitch 4 7 2 Shutdown Powers down the encoder It is HIGHLY recommended to power off the equipment with this Icon rather than simply pulling the plug All operating parameters will be properly saved and restored 4 7 3 Factory Defaults Restores all Channels and other settings to their factory default All configuration information will be lost Nothing is saved and the reset is irreversible 4 7 4 Export Settings Once a recorder has been setup and configured it s highly recommended to export all settings to save the configuration of the unit for easy restore or repair Export Settings Custom Network Telnet Channels Sources Unit Web Display Layout Presentation Server Notifications Y Y Y Passwords Y Scheduler Y Y Y Export Cancel Clicking the Export button will create and download a zip file with all of the checked information 4 7 5 Import Settings To restore an encoder to a previously configured state press Import Settings and locate the previously exported zip file Import Settings Settings Browse Import Cancel NCast Corporation Revision 2 2 Page 2
51. ame File Type rtp_fullscreen_live qtl Quicktime RTP Fullscreen rtp_live qtl Quicktime RTP in a Window live sdp Session Description Protocol File In all cases these files contain parameters such as the address of the server media stream types multicast groups etc To view samples of these files right click and Save Target As to a directory on your desktop The graphics overlays and PIP video are in one media stream inseparable The file extension will determine which media player to launch Each web browser keeps a list of file extensions and the appropriate application to process a file with that extension The most generic of these files the SDP file might be associated with any number of different players on different operating systems The sequence of events for getting a successful playback with an SDP file works like this NCast Corporation Revision 2 2 Page 87 NCast NCast Presentation Recorder Reference Manual 1 At installation the client player informs the web browser that If you see an SDP file launch me and pass the file information to me 2 On the web page when the playback link is clicked the browser sends a request to the server to retrieve the requested SDP file 3 The server upon receiving this request dynamically generates an SDP file based on the current channel and media parameters in use This SDP file is returned to the browser 4 When the browser get the SDP file request
52. background the lowest As part of the Edit Channel Layout window the Presentation Recorder provides an easy to use drag n drop style interface which allows a user to Select which of the above elements will be in the final frame composition View the coordinates and sizes of all the windows and overlays selected Modify the coordinates and sizes of all the windows and overlays via numerical coordinates or drag n drop Upload the background underlay image Upload the images required for the graphical overlays Edit the properties of the dynamic text overlays Enter text into the dynamic text overlays This example which follow shows how to setup a Channel for one particular custom layout NCast Corporation Revision 2 2 Page 93 NCast NCast Presentation Recorder Reference Manual Edit Channel Layout Lx CEEI AOS Main window Left 320 Top fo Width 960 Height 720 _ PIP window Left fo Top fo Width 700 Height 426 _ Overlay 1 Overlay2 Overlay 3 Overlay 4 Text overlay 1 Textoverlay 2 Text overlay 3 Text overlay 4 Left fo Left fo Left fo Left fo Left fo Left fo Left fo Left fo Top 240 Top 240 Top 240 Top 240 Top 240 Top 240 Top 240 Top 240 Width 320 Width 320 Width 820 Width 320 Width 320 Width 320 wiath 320 wiath 320 Height 480 Height 480 Height 480 Height 480 Height
53. based software API called gdata for many of their services which allows programmatic access to the calendars and the events contained within them The API is implemented in Java and several other languages and allows outside programs e g clock widgets PDA s other calendar systems to access and create events within a Google calendar NCast has taken advantage of this programmable API to implement a scheduling system for Presentation Recorders where the web based Google Calendar is the administrative interface for defining session start stop times for one or more Presentation Recorders within a customer s network The process works in three steps 1 An administrator enters one or more scheduled events for a Presentation Recorder 2 The scheduling process queries the calendar at regular intervals and captures these events 3 Commands sent to the IP Serial Interface of a Presentation Recorder starts and stops the unit The calendar interface allows an administrator to setup single or repeating events The example below shows a single event scheduled for Tuesday a Monday Wednesday Friday repeating event and a Monday to Friday repeating event An event is associated with a single Presentation Recorder listed in the Where field Two events with the same start stop times on the same day can be directed to two different Presentation Recorders simply by changing the contents of the Where field The Description field discussed
54. below allows customization of the actions executed at scheduled start time NN om fy Slashdot s W Manage av enay Ne 86 Modules ESooge x C aongle ca je ncest tek Eb 7 ED hv lp ran reos info ncast com New Features Settings Help Sign out Search My Calendars Search Public Events sow search Options EBES Feb 18 24 2007 Sun 2118 Day Week Month Next7 Days Agenda FA 223 Sat 2124 Tue 220 Wee 2721 Thu 222 So to get started and administrator must establish a Google Calendar account different from a Google mail account and provide a password for this account Multiple accounts can be established for multiple Presentation Recorders if that is easier to administer NCast Corporation Revision 2 2 Page 68 NCast NCast Presentation Recorder Reference Manual Only the primary or default user calendar is processed The program is not able to deal with secondary calendars at this time 7 7 5 Creating Scheduled Events To create an event click on a time slot and fill in the following fields Gmail Calendar Documents Web Reader more hank magnuski gmail com Offline Settings w Help Sign out Google calendar Search my calendars Show search options Back to calendar Save Discard changes Delete More Actions PR720 Weekly Webcast 9 16 2010 9 00am to 10 00am 9 16 2010 OAllday Repeat Event details Find a time
55. bject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation FCC NOTICE INFORMATION FOR THE USER This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures 1 Reorient or relocate the receiving antenna 2 Increase the separation between the equipment and receiver 3 Connect the equipment into an outlet on a circuit different from that to which the receiver is connected 4 Consult the dealer or an experienced radio TV technician for help The user may find the following publication prepared by the Federal Communications Commission helpful How to Identify and Resolve Rad
56. c flow The following table lists commonly accepted values of TTL used in this manner Restricted to the same host Won t be output by any interface Restricted to the same subnet Won t be forwarded by a router Restricted to the same site organization or department Restricted to the same region Restricted to the same continent Unrestricted in scope Global TTL scopes however have fallen into disfavor and current practice recommends use of administratively scoped addresses for containment of multicast traffic flows 5 8 EDIT CHANNEL RTMP STREAMING 5 8 1 Set RTMP Server Address This Channel Type enables use of the RTMP Flash Streaming protocol for live broadcast to a streaming server or CDN Enter the name of the server or its IP address followed by the name of the application instance used for this broadcast NCast Corporation Revision 2 2 Page 39 NCast NCast Presentation Recorder Reference Manual Edit Channel RTMP Streaming x Set RTMP server Address ps ncast com Port number 1935 Username Password Stream Name ncast sdp Previous Next 5 8 2 Port Number Port number 1935 is standard for this service Enter an alternate number if your server is configured differently 5 8 3 Stream Name Enter the name of the live stream This name must be unique for each encoder broadcasting to the server 5 9 EDIT CHANNEL AUTOMATIC UNICAST 5 9 1 Set RTSP Server Address
57. ce and to prepare data for display on the attached monitor A highly secure open source operating system underlies and supports all of this functionality DSP A custom DSP is used to compress and decompress YUV video and graphics images to H 264 streams Display Output Sub system Media streams which are received and decoded are presented on the attached display for viewing Both RGBHV and component output Y Pb Pr are supported Audio Sub system A sound system with stereo input output capabilities and with support for microphone and line level inputs and line level outputs is used to create the AAC audio streams transmitted in conjunction with the associated graphics or video imagery Balanced XLR inputs are also supported Ethernet Interface Industry standard ethernet connectors are used to connect the Presentation Recorder with the Internet network used for communications Display Output Display Sul Capture Module VGA DVI HDMI NTSC Audio In amp Out Internet 3 2 CAPTURE MODULE FUNCTION The capture module selects one of the available six inputs VGA DVI D DVI A HDMI Composite S Video and locks onto the signal The signal is converted into the appropriate digital formats and each pixel in the image is stored in a local memory buffer on the module Any required sizing and re scaling is done in the module At an appropriate time the pixels in module are transferred to the DSP where they are proce
58. chive file without recompression of the material 13 4 1 Streamclip One such tool is a free utility called Streamclip This program may be obtained at the following website http www squared5 com To use Streamclip to trim a file follow these steps Open the mp4 file to be trimmed Drag the slider to the starting sequence of your new clip and select the In point where the new clip should start 4 MPEG Streamclip 1 0 1 2006 Squared 5 Open Files Look in Virtual Teams My Recent Documents G E 20070801 090006 001 mp4 3 20070801 090006 0014 mp4 8 20070801 090006 0018 mp4 9 20070801 090006 001C mp4 9 20070801 111138 001 mp4 20070801 114349 001 mp4 20070802 085403 001 mp4 20070802 095043 001 mp4 20070802 134151 001a mp4 3 20070802 143557 001 mp4 20070802 154929 001 mp4 9 20070802 163219 001 mp4 3 20070803 091830 001 mp4 20070803 094714 001 mp4 9 20070803 102500 001 mp4 3 20070803 113042 001 mp4 Oe em ajea 9 20070802 104849 001 mp4 20070802 110940 001 mp4 3 20070802 113917 001 mp4 20070802 115612 001 mp4 20070802 120435 001 mp4 My Documents My Computer File name 20070802 1 34151 001 mp4 Mi My Network Files of type Video ts ps2 vob mpeg mov dv avi Y Audio PID Audio Mode 0 Out O 0 00 00 00 MPEG Streamclip 1 0 1 2006 Squared 5 File EIA window 0708
59. client players such as Quicktime which need to download sdp files using HTTPS protocol may not function correctly if the certificate is not valid Consult with your network administrator about certificate availability for your organization Access using HTTPS is straightforward Simply use the https prefix https pr hd ncast com This will automatically direct the request to port 443 the standard for HTTPS access 7 4 2 Upload Certificate amp Private Key If an organization has purchased an official SSL Certificate or has created a non authoritative one which can be done with many different SSL tools this new certificate may be uploaded and installed on the Web Control page When HTTPS is turned on the Apache server requires that the certificate be authenticated with a password Since this is not possible inside the Presentation Recorder a private RSA key may be used instead of a password If there is not a valid private RSA key available then Apache will not start This is used to disable third parties launching HTTPS with stolen certificates More information on this topic is at http www apache org The pass phrase should be removed from the private key before upload 7 4 3 Admin password The Admin password grants rights to all configuration and setup options for the Presentation Recorder This password should be chosen carefully and with security in mind Avoid use of common names dictionary words and the l
60. d or fixed When the status becomes Ready the archived file is ready for download 6 1 1 Download Button To download one or more archives select the files to be downloaded and click on the Download button Download archives Select files Y MP4 XML SRT Download Cancel In addition to the MPA file two additional files may be retrieved e XML Contains metadata about the recording such as Title and Presenter SRT Contains a timed text track which may be used for captioning chaptering or event marking Refer to the Serial Command Reference Manual for more information on timed text tracks 6 1 2 XML Metadata This information is available in XML format for use by other applications lt xml version 1 0 encoding UTF 8 gt lt archive version 1 0 gt lt filename gt 20120926 172747 002 mp4 lt filename gt lt title gt NCast Corporate News lt title gt lt presenter gt Sales Staff lt presenter gt lt description gt Weekly summary of Sales activity lt description gt lt unit gt Presentation Recorder lt unit gt lt channel gt Presentation amp HD Video lt channel gt lt start gt 2012 09 26 17 27 47 lt start gt lt duration gt 00 05 57 lt duration gt lt timezone gt 0700 lt timezone gt lt width gt 1280 lt width gt lt height gt 720 lt height gt lt aspect_width gt 1280 lt aspect_width gt lt aspect_height gt 720 lt aspect_height gt lt main_window gt 320 0 960 720 lt ma
61. d video quality Increasing max quantizer too much may cause the encoder to skip frames in order to maintain the target frame rate This is a video encoder option it doesn t affect the decoder Note These parameters are for advanced users only who fully understand the relationship between these settings and the impact they might have on other encoder settings and encoder performance Use extreme caution when modifying these values 5 6 6 Rate Control e Constant Bit Rate The transmitted bit rate is kept equal to or below the bit rate specified e Variable Bit Rate The transmitted bit rate is allowed to burst as required during scene changes 5 6 7 Buffer Size Sets the Constant Bit Rate buffer size in seconds This controls how much the bit rate can vary locally A larger buffer size results in higher overall video quality and less frame skips but increases the video latency This is a video encoder option it doesn t affect the decoder NCast Corporation Revision 2 2 Page 36 NCast NCast Presentation Recorder Reference Manual 5 7 EDIT CHANNEL NETWORK 5 7 1 Set Video Stream Destination Address An address entered for Video the Video or Graphics media stream will be either a valid multicast address or the numeric host IP address of the remote unit if a point to point connection is being established Edit Channel Network O Set video stream destination Address 239 192 0 1 Port number 10010 MTU
62. dBu 0 775 V RMS on the line in connector will produce maximum sample values with the line in gain set to approximately 21 If this is considered the internal 0 0 dB signal reference the chart shows gain adjustments for different values of Line in Gain 9 2 5 Audio Output Gain The audio output gain adjusts the signal level from the audio codec to the line out connector This signal powers the local speakers after suitable amplification and delivers the audio media stream to the audience For a 0 0 dB reference signal maximum sample values the measured output levels in dBu are shown in the chart 9 2 6 Audio Loopback Gain Allows input audio to be looped back to the output connector The normal use of this loopback is for confidence checking of the input audio on a control monitor or speaker If input microphones are able to pickup this output signal serious feedback loops whine will result Setting this value to non zero where speakers and microphones are in the same space is not recommended Audio Gain Charts Mic Gain Amplification Line in Gain Amplification Output Gain Output Level 9 3 ADVANCED 9 3 1 Advanced Settings Brightness Contrast Saturation Hue These values allow fine tuning of image brightness contrast saturation and hue NCast Corporation Revision 2 2 Page 84 NCast NCast Presentation Recorder Reference Manual Advanced Settings VGA DVI A DVI D HDMI DisplayPort Composite Lay
63. default NCast Corporation Revision 2 2 Page 34 NCast NCast Presentation Recorder Reference Manual Edit Channel Profile O Set video quality Custom y Format H 264 Frame rate 30 Bit rate 1000 Key frame interval 10 secs default Min quantizer 10 default Max quantizer 51 default Rate control Constant Bit Rate Buffer size 1 0 sec default Set audio profile 44 kHz Mono 64 kbps Previous Next 5 6 2 Frame rate The video frame rate represents the number of frame visual image grabs per second the system will attempt to achieve The range of this setting is 1 30 frames per second For NTSC video encoding a full 30 frames second is achieved At HD720 resolutions dropping the frame rate to lower values 5 frames second for example allows a broader range of lower performance PCs to successfully decode the received presentations It also reduces the required network bandwidth At these rates however cursor movements look somewhat jerky and embedded video clips do not play well One tradeoff might be to send a lower resolution SVGA 800x600 image at a higher frame rate At settings of 10 frames second cursor movement and drop down menus look natural but video still suffers At 15 frames second video playback starts to become acceptable but high motion imagery has detectable artifacts At the higher rates of 20 frames second and up both the video and graphics performance l
64. desired The Presentation Recorder will query the server to populate the entries in these two menu pulldowns Set series A Series is a sequence of recordings and controls viewing rights to those recordings Consult Section 7 8 for additional information on configuring and troubleshooting a Presentation Server connection 5 11 19 Kaltura Server Upload to a Kaltura Server utilizes a specialized protocol unique to Kaltura Uploaded files will be automatically indexed and made available to viewers NCast Corporation Revision 2 2 Page 50 NCast NCast Presentation Recorder Reference Manual Enter the following credentials for your server Set Partner ID Enter your Partner ID as provided by your network administrator Set User ID Enter your User ID as provided by your network administrator Set User Password Enter the user password provided by your network administrator Edit Channel Upload O Automatically upload recordings y When to start uploading immediately Remove recording after upload is finished Primary Secondary Set upload method Connection Test Kaltura Server Set server Set port number 80 Set partner ID Set user ID Set user password Previous Next 5 12 EDIT CHANNEL NOTIFICATIONS The Presentation Recorder has an extensive system of notifications by e mail for routine and extraordinary events related to Channel operation Events ca
65. ding on the Channels gt Edit gt General tab Start the Channel from the Channels page and check that Recording is active Then Stop the recording Session Go to the Archives page and see if the recording has been created As soon as the recording becomes Ready the file should upload to the server Verify that a new Workflow has been launched on the server s Workflows page 4 Finally schedule a recording for future capture Allow 10 15 minutes lead time for all the schedules to get synced Verify that the encoder is seeing the event using the View Schedule test button At the scheduled time the encoder should be recording Upload should work the same way as a manual event Please contact NCast if any of these steps are not working 7 9 NOTIFICATIONS The PR HD Series has an extensive system of notifications by e mail for routine and extraordinary events during its operation Events can be informational like Archive uploaded or they can be error reports such as Disk full NCast Presentation Recorder Wi 4 Quick Start Channels Archives Configuration Status Notifications Notifications Y Connection Test E mail address info ncast com _ _ Select Events E mail from address prhd ncast com SMTP server mail ncast com SMTP port 25 SMTP authentication Y SMTP username SMTP password SSL TLS Apply Event are categorized by their severity level Info Warning E
66. dress must be provided by the installer Consult with the IT staff or network management to obtain the IP address allocated for the unit 7 3 2 IP Address The static IP address to be used by the unit in numeric form www xxx yyy zzz Not required if DHCP is enabled NCast Presentation Recorder MOIS wie Quick Start Channels Archives Configuration Status Network DHCP HTTP Proxy IP address 192 168 0 2 SNMP Netmask 255 255 255 0 Gateway 192 168 0 1 Slave Unit D Primary DNS 192 168 0 10 ee Remote Logging Secondary DNS 192 168 1 10 Ethernet mode Auto negotiation Note Reboot unit to activate changes Apply 7 3 3 Netmask The IP netmask in use for this LAN segment e g 255 255 255 0 7 3 4 Gateway The numeric IP address of the gateway host on this LAN segment e g www xxx yyy 1 7 3 5 Primary DNS The numeric IP address of the primary Domain Name Server DNS for this LAN segment e g www xxx yyy 10 Domain name servers translate symbolic domain names to numeric IP addresses Various processes within the Presentation Recorder may on occasion require contact with a valid name server 7 3 6 Secondary DNS The numeric IP address of the secondary or backup Domain Name Server 7 3 7 Ethernet Mode Adjusts the hardware link level settings for the connection between the Presentation Recorder and its network switch Normally Auto negotiation will be sufficient to establish the correct settings but under
67. e SDP file is saved by the server Should have an sdp extension The names should be unique for each Presentation Recorder accessing the RTSP server 5 9 5 Set Video MTU The Maximum Transmission Unit MTU is the maximum length of a packet and is normally set to 1500 For some special circuits satellite links others the maximum size may need to be adjusted downward to avoid packet fragmentation which leads to inefficiencies and possible packet loss 5 9 6 Set Audio MTU The Maximum Transmission Unit MTU is the maximum length of a packet and is normally set to 1500 For some special circuits satellite links others the maximum size may need to be adjusted downward to avoid packet fragmentation which leads to inefficiencies and possible packet loss 5 9 7 Enable Video Bandwidth Smoothing NCast Corporation Revision 2 2 Page 41 NCast NCast Presentation Recorder Reference Manual If enabled the encoder smooths the stream transmission and sends packets at the prescribed target bit rate this is the default setting This will increase network jitter and latency If disabled the encoder uses burst transmission by sending all packets immediately after encoding This will significantly decrease network jitter and latency but depending on network connection it can cause packet loss and bottlenecks If burst network transmission is acceptable it is possible to disable this option to get extra low video latency This is a video
68. e VGA Output connector 7 5 3 Loopback Turns on and off the loopback of locally generated graphics or video input If a local display and local loopback is not being used in an installation this setting should be unchecked as that will free up CPU cycles which are required to generate the loopbacked image 7 5 4 Loopback Frame rate If local loopback has been selected the CPU will maintain on the local screen a copy of the material which is being digitized and sent out as a webcast or recorded as an archive The process of refreshing this screen consumes CPU cycles especially if large resolutions and fast frame rates are involved Excessive CPU utilization can negatively impact maximum outbound frame rates This parameter allows the operator to decrease the local loopback refresh loading The local screen will still be updated but at a rate which provides some relief from excessive use Reduce the setting from the Full value if needed to maximize outbound transmission performance Obviously a very low setting will impair the visual quality in terms of motion of the local display 7 5 5 On Screen Display OSD The On Screen Display OSD presents the following information on the locally attached display e Local Audio Levels Left Right Level of audio to be recorded or streamed e Network Audio Levels Left Right Level of audio being received from a remote source IP address Current IP address of the recorder Strea
69. e below In the example above C1 starts the Presentation Recorder session on Channel 1 7 7 6 Scheduled Event Commands The Description or content field is a series of serial IP commands to be issued to the Presentation Recorder at the time the Start event is processed Each command is terminated with a character For example C10 This is the only command needed to start a Presentation Recorder Start on Channel 10 with all other settings unchanged A more complicated example G3 V1 p1 C8 R1 RP The CEO RT Weekly Performance Review where NCast Corporation Revision 2 2 Page 69 NCast NCast Presentation Recorder Reference Manual G3 Set the Main input to the VGA input connector V1 Set the PIP input to the Composite video input connector p1 Turn PIP on C8 Start session on Channel 8 R1 Turn recording on RP Set presenter information to The CEO RT Set title information to Weekly Performance Review Commands are case sensitive and must be written exactly as shown The commands are processed in the order given The presenter and title information are stored by the Presentation Recorder in an XML file associated with archived MPEG 4 file This XML file will normally be uploaded to the content server and can be used to provide additional details about the content for archiving and indexing The Presentation Recorder Serial Interface Specification lists all the commands available on the serial IP
70. e start of ANY Session whereas a Channel specific event would only report the start of activity on Channel N See Section 7 9 11 for additional information on use of this menu NCast Corporation Edit Channel Events Select by event type Critical Error Warning Info Select by event name Session start Session stop Recording start Recording pause Recording continue Recording stop Archive ready Archive remove Archive restore Archive upload Archive download OK Revision 2 2 Page 52 NCast NCast Presentation Recorder Reference Manual 6 Archives 6 1 ARCHIVE SETTINGS The Presentation Recorder units allow complete recording of audio and graphics streams onto internal storage for later retrieval and playback NCast Presentation Recorder MOEIS wie DP Quick Start Channels Archives Configuration Status Ready Show 50 entries Download Upload Edit Remove Play Search a Filename gt Title Cenic 20140312 113700 B 2500 mp4 Cenic 2014 Conference Character Education in Gaming Cenic 20140312 111125 B 2500 mp4 Cenic 2014 Conference Creating Access One Program at a Time Cenic 20140312 100218 B 2500 mp4 Cenic 2014 Conference Crafting an Effective MOOC Cenic 20140311 173718 B 2500 mp4 Cenic 2014 Conference Delivering Student Success Tool and Online Education to All CA Community Colleges Cenic 20140311 170730 B 2500 mp4 Cenic 2014 Conference Internet2 Net Services Experiences in
71. e to a file packetizes and transmits the imagery as an internet media stream receives a media stream from the internet decompresses the imagery and presents the received information to a viewing audience through use of a large screen monitor or via a room projector Presentation Recorders are able to archive the media stream in real time while simultaneously webcasting allowing for playback by the recipient at a later date The following Presentation Recorder models are covered by this documentation PR HD Basic R A rack mounted unit with streaming and archiving capabilities The PR HD Basic R introduces support for up to WUXGA 1920x1200 input resolutions with up to 1080p 1920x1080 capture resolutions and PiP Picture In Picture video and graphics overlay PR HD Basic D A rack mounted unit with streaming and archiving capabilities The PR HD Basic D introduces support for up to WUXGA 1920x1200 input resolutions with up to 1080p 1920x1080 capture resolutions and PiP Picture In Picture video and graphics overlay This unit has two independent and identical encoders in a single 1U rack mount chassis each encoder and its power supply occupy Ya rack The dual encoding capabilities of this model enables many different applications for example NCast Corporation Revision 2 2 Page 6 NCast NCast Presentation Recorder Reference Manual e Two independent HD encoders With identical inputs one encoder may be setup
72. e with highest counter value is discovered and the counter value found is incremented by one If all files are removed the counters will start again from 1 If a newly created archive filename conflicts with an existing archive a suffix _n _1 _2 _3 is added to the new name to avoid overwriting an existing file 5 10 3 Set Recording Title Enter information about the Title of the session being recorded e g class or course number conference session title meeting name etc This information is entered as meta data about the recorded archive and will be captured in the xml data file associated with the archive Once a recording has commenced the title information may be updated on the Archives page Special text variables 0 9 may also be entered in this field See discussion below 5 10 4 Set Recording Presenter Enter information about the Presenter of the session being recorded e g class professor or instructor conference session speaker meeting chairperson etc This information is entered as meta data about the recorded archive and will be captured in the xml data file associated with the archive Once a recording has commenced the presenter information may be updated on the Archives page Special text variables 0 9 may also be entered in this field See discussion below 5 10 5 Set Recording Description Enter additional descriptive details about the event the presenter the topic or background of the recording This
73. echo Synopsis stop sh address password exit Bal ADDRESS 1 PASSWORD 2 echo IdTelnet 002 PASSWORD sleep 1 echo PE sleep 1 SOHO sleep 1 telnet SADDRESS 7474 gt amp dev null 12 3 REST INTERFACE ARCHIVE DOWNLOAD Special HTTP commands are available to enable automatic or script downloading of archive files wget user admin password ncast http 192 168 0 100 rest files recordings 20120926 061931 001 mp4 wget user admin password ncast http 192 168 10 100 rest files recordings 20120926 061931 001 xml where file mp4 The time stamped archive filename obtained from the downloaded list file xml The time stamped xml file associated with an archive file Note that archive operations are username password protected and this information must be supplied to utilize these special URLs The required username is admin The password is entered on the Configuration WEB page 12 4 REST INTERFACE IMAGE AND THUMBNAIL CAPTURE The HTTP Interface may be used to capture single images from the encoder Commonly employed utilities such as wget can retrieve the current composite frame for placement of the image on a web page or elsewhere Here is an example of the single command line needed wget user admin password ncast http 192 168 0 100 rest files preview jpg The default settings are format jpg quality 85 and the width and height will match the current settings of the session frame
74. ecordings when one presentation runs right into the next one Session Length If the cameras are recording a backup copy of the sound and video which is a really good idea the MC must know that MiniDV tapes only record for an hour or some other length of time and need to be changed at some point Discrete Units The webcast file recording should be broken up into discrete units by topic or speaker so that the file lengths remain manageable and viewers can download or view only the material of interest A continuous three or four hour conference recording is very difficult to manage or post process The MC must plan for some breaks Speaker Order If the MC plans on changing the order of speakers or presentations the recording crew needs to be informed so that the proper sequence of overlay graphics can be readjusted 13 3 3 The Conference Speakers If possible the recording crew should talk to the speaker s prior to their presentation and make the following points Use a microphone Even if the room audience can hear the speaker well non use of a microphone can be a disaster for the webcast or recording The proper microphone must be on and functioning period Stay near the podium The speaker should stay near the lighted area of the podium and not wander up and down the front of the room Don t stand in front of the projection screen Talking in front of the projection screen leads to video backlighting proble
75. ed e Recording Control Recording of a session on a Channel is started paused or stopped e Status Bar A real time display of session activity and input signal status e Control Icons Special controls to power off the unit reboot and several other functions NCast Presentation Recorder MOIS wie Quick Start Channels Archives Configuration Status 4 Channels Select a Layout Control Icons z a N Cast NC Sources Vv Video Audio Advanced Overlays Preview C h a n n e P resets Te m p ates Streaming Video Audio Source Selection Stop Recording Streaming Controls u Pause Stop Title Recording Controls Status Bar Session Sending Recording Input Output Main PIP Channel 1 H 264 1280x720 00 02 36 A b PIDIO MINTII Q Q i Presentation amp Vid 30 1fps 107kb ev E Orr RUIN MINI With the Quick Start page the sequence of operations required to activate a streaming recording session may be summarized as follow 1 Select a Channel layout 2 Select the appropriate video and audio sources 3 Start a streaming session 4 Start recording 5 Stop recording 6 Stop the streaming session NCast Corporation Revision 2 2 Page 19 NCast NCast Presentation Recorder Reference Manual 4 2 CHANNEL SELECTION A Channel is a preset containing all the layout and startup parameters needed for a streaming or recording session There are seven categories of channel parameters Ge
76. ed it launches the application currently associated with the SDP extension This application must be the client media player 5 The browser passes the file information to the application by giving the application the filename or the location of the file 6 The application the client media player reads the contents of the SDP file and determines how many media streams must be requested what types of audio video codecs are required to process the media and what type of connection multicast RTSP is required 7 When all the appropriate components have been loaded the client player opens up the Internet connections required to play the media streams and starts buffering media for playback 8 After a few seconds of initial buffering the viewer sees the media playback 10 2 VLC MEDIA PLAYER A popular cross platform media player with low latency is called VLC Video Lan Client There are several ways to launch VLC for use with a Presentation Recorder 1 Associate the file extension sdp with the VLC application Under Windows this can be done using My Documents gt Tools gt Folder Options and associating a sdp extension with the vic exe application 2 Download Right click and Save as the sdp file and then drag it onto the VLC client This method works only for multicast connectivity NCast Corporation Revision 2 2 Page 88 NCast NCast Presentation Recorder Reference Manual Open Source
77. eeps the text from crowding or adjoining the edge of the window Text may be aligned Left Center or Right within the window The RGB color values for the foreground and background may be specified through use of the color picker dialog box Text wrapping may be enabled or disabled The text may include format strings e g b d Y for month day year See table below NCast Corporation Revision 2 2 Page 32 NCast NCast Presentation Recorder Reference Manual Function Abbreviated weekday name for example Sun Full weekday name for example Sunday Abbreviated month name for example Jan Full month name for example January Day of the month 01 to 31 Archive description Hour 00 to 23 Hour 01 to 12 Hour 0 to 23 Hour 0 to 12 Archive title Month 01 to 12 Minute 00 to 59 Channel number 001 to 100 Channel name AM PM am pm Archive presenter Second 00 to 60 Date for example 12 31 08 Time for example 23 13 48 Year for example 2009 Numeric time zone for example 4000 Alphabetic time zone abbreviation for example EDT The text within a text overlay can be changed and frequently updated through use of serial commands See the Presentation Recorder Serial Interface Specification for details e OTO disables all four text overlays e OT 1 2 3 4 0 1 disables enables given text overlay OSO sets empty text on all four text overlays e OS 1 2 3 4 TEXT se
78. en A E A A E A 18 Behe DOOM pt E AA A AA AAA 18 AO a A A ne nen ae eee eee mere ree ere een 18 SAO US A A A O 18 20 Archive PASOS rr ii a it A Mani A AAE A 18 4 Guick Stant Coniguration and Sep accan 19 4 1 Quick Stan Fage IIA A A 19 4 2 Channel ENO CUO sti a A A O DARA A S AA 20 e aTe O ea aaea e E 21 EA SEI SA OPa a 22 A RECON A A AAA AAA AAA AA AAA AAA AAA 23 AM A A 23 A 11 a NS AS A ES 23 w TRES Channel TAE po A A A A e A 26 Ae o AAA A O ESN eee ren E 26 2A A A A cl lg 27 o eo A NPG A csi ainchguuanninaee di eA aAA A EDERE eha Rinne peau wea pea stil epa 29 O a a E e ed accents A E A A E E EAE EEN 30 ig e sl AAA dean denn eran NT 33 5 6 Edit Channel Customized Profile SETAS sp a sd 34 A E Channo NEW ooo A ta deters iC ean tie ak 3z 5 9 Edit Charnel RTMP METIA it 39 5 9 Edit Channel Automate UNICASE cia A ta iS 40 A tr o aa 42 SA tc AAA A A hg a a ba 45 512 Edit Chamel IN OMAN OMS oi A A A AA iateeuinns nile 51 A aie aa a ee te hd se eae eee ek aa Ah Se le fee ead 53 FM A nee hh od i ni sca hg AA ee Rcd cau sedan Rcd 53 Lo CONTOU O a a 57 AAN A A N 57 FAN Mc A ak Be tl aN A A A AE A A A i ee A 58 EO NEOR A O 59 NCast Corporation Revision 2 2 Page 2 NCast NCast Presentation Recorder Reference Manual EA A A OS 63 EA E APA IA EE OIA TAT AET NON 64 Al AAA A A A PAR RO O PA CATS 66 EA DOI AAA AA 67 Mo e A A ON 72 E ay Pcl ee Fc a A
79. enforce policies to stop multicast traffic flow for addresses within this range Further these same border routers can enforce policies so that subsets of these addresses are contained within NCast Corporation Revision 2 2 Page 37 NCast NCast Presentation Recorder Reference Manual administrative boundaries such as a local LAN a building a campus or a region These are safe addresses to use in setting up an organization s multicast network and ideal entries for use in the Channel Table Consult with the Network Administrator for the particular address ranges in use on the network hosting the Presentation Recorder All units in one session use the same multicast address The Video and Audio multicast addresses for a session can be the same if the Port numbers are different Units engaged in different sessions should use different multicast addresses to minimize traffic loading on the network the multicast routers distribute all traffic to all points subscribed on a particular multicast address independent of the port number The default settings for a Presentation Recorder use Administratively Scoped multicast addresses This implies that streams created using these addresses will not exit the organization s network If the network is not multicast enabled point to point communications between two Presentation Recorders is possible by entering the numeric IP address of the remote unit into this field 5 7 2 Set Video Stream Destinat
80. ent and W H sizing of the primary or Main image window stream Typically the Main stream is sized at Full screen which means that the primary stream is scaled to the full dimensions of the frame It is useful to note however that the primary stream can be dimensioned to a smaller size than the full frame size The unused space might then be reserved for the secondary image stream the PIP image but placed outside the boundaries of the Main image and possibly an overlay graphic A Main and PIP side by side composition would also dictate that the Main image only occupies one half of the capture surface area 5 3 2 Set Aspect Ratio The aspect ratio of an image is the visual width divided by the visual height For most computer systems square pixels are displayed so the aspect ratio of the image is the pixel width divided by the pixel height In video systems however often non square pixels are displayed and the aspect ratio differs from the pixel width to height ratio The Frame Size see 5 3 1 above only determines the pixel dimensions of an image For proper display the aspect ratio must be specified and used to render the final image 5 4 EDIT CHANNEL LAYOUT 5 4 1 PIP If the PIP window is enabled its X Y placement and W H dimensions are overlaid on the frame Typically this might be in the upper right or lower right corner of the frame The PR HD Series user has the option of deter
81. ent programs now support this standard including Google Calendar The NCast Scheduler can read standard iCalendar ics files containing scheduled events and can control Presentation Recorders based on the contents of these events 7 7 9 Using an iCalendar File There are three basic steps to use an iCalendar file with the NCast Scheduler 1 Create the schedule in a calendar application 2 Exporta ics file with the event information 3 Start the scheduler program with this file It is possible to use both iCalendar and Google Calendar at the same time The scheduler program reads the file first and extracts up to one month s worth of events from the file then checks for a Google Calendar account and utilizes any additional event information coming from Google Calendar Overlapping or conflicting event information is not checked for and could cause scheduling errors Entering the event information is similar to the process described above using Google Calendar Summary field must contain PR720 somewhere in the field e Location field must contain the IP address of the Presentation Recorder e Description field contains serial commands to be sent to a Presentation Recorder 7 7 10 Importing iCalendar Files An alternate way of utilizing Calendar files is to first import them into a Google Calendar account and then use the Scheduler program only with Google Calendar To import an Calendar file into Google 1 Go
82. es the process of synchronizing a transcript to video simple and allows quick and easy generation of captions World Caption accepts UTF 8 encoded text files which means it can handle a wide number of languages including languages with non Latin character sets such as Japanese World Caption allows addition of any number of tracks to the video This allows the creation of caption tracks for several languages World Caption eases the process of synchronization by using interpolation It isn t necessary to synchronize every caption but just a few World Caption will infer the location of other captions from the ones synchronized with the video System Requirements World Caption requires Mac OS X version 10 4 or later NCast Corporation Revision 2 2 Page 92 NCast NCast Presentation Recorder Reference Manual 11 Custom Layouts 11 1 FRAME LAYOUTS AND PRESETS The main Frame of a Presentation Recorder composition consists of the following elements Text Overlays 1 4 optional Graphical Overlays 1 4 optional A PIP Window Border optional The PIP Window optional The Main Window A Background Image underlay optional The Black Matte Background The size and arrangement of all of these elements is completely under the user s control and may be changed on a Chamnel by Channel basis The order of precedence the visibility stack is in the order given above Text Overlay 4 has the highest visibility and the black matte
83. es three components to allow automatic start stop scheduling of one or more Presentation Recorders in a network These components are e An administrative interface based on Google Calendar or other Calendar system using Calendar e A scheduler process which queries the calendar information and activates the Presentation Recorder The Presentation Recorder IP serial command interface which receives commands at the scheduled times 7 7 3 Scheduler Overview The following sections describe how to use a Google Calendar account or an iCalendar file to setup a schedule for one or more Presentation Recorders and how to use the Scheduler web page NCast Corporation Revision 2 2 Page 67 NCast NCast Presentation Recorder Reference Manual Complete documentation for the serial command set is in the Presentation Recorder Serial Interface Specification Please refer to this manual for a more complete description of commands which may be used This guide lists a few basic commands which allow the user to start and stop a unit from the Scheduler interface 7 7 4 Google Calendar Events Google Calendar is a web based interface used to enter calendar events such as meetings and appointments lt allows multiple personal calendars e g business and home and allows sharing of public and private calendars with friends and associates One interesting and important aspect of this calendaring system is that Google has defined a standards
84. esentation 13 2 CAPTURING GRAPHICS VIDEO AND AUDIO The following paragraphs outline common problems in recording a typical conference or presentation 13 2 1 Capturing Graphics The output of the presenter s laptop needs to go to two places the room projector and the Presentation Recorder Many conference rooms are currently not capable of this two way split It s a really good idea to NCast Corporation Revision 2 2 Page 102 NCast NCast Presentation Recorder Reference Manual check out the A V equipment in the room the day before the recording if possible or to consult with the A V staff to plan how these video graphics and audio connections will be made There are several ways to solve this problem e VGA Splitter A VGA splitter is a small distribution amplifier which accepts a VGA signal as input and provides two or more VGA signals as output The VGA splitter plus two extra cables is all that s required One cable a short one one or two meters in length connects the output of the presentation PC to the splitter The other cable a long one 25 meters or more connects the output of the splitter to the input capture card of the Presentation Recorder A long cable is required as the Presentation Recorder recording table station is frequently in the back of the room where there is a power connection and where the technician can operate the video camera The projector plugs into the second output of the splitter Test a
85. esolution of 1366x768 pixels Some projectors use WXGA to refer to 1280x720 as well This display size implements a 16 9 aspect ratio as compared to a normal 4 3 monitor XGA Describes an image or display surface with a resolution of 1024x768 pixels NCast Corporation Revision 2 2 Page 111 NCast NCast Presentation Recorder Reference Manual 16 References 16 1 MPEG COMPRESSION ISO 14496 12 ISO base media file format ISO 14496 14 MP4 file format 16 2 PACKET TRANSMISSION IETF RFC 3550 RTP A Transport Protocol for Real Time Applications H Schulzrinne et al July 2003 IETF RFC 3551 RTP Profile for Audio and Video Conferences with Minimal Control H Schulzrinne et al July 2003 IETF RFC 3016 RTP Payload Format for MPEG 4 Audio Visual Streams Y Kikuchi et al November 2000 IETF RFC 3640 RTP Payload Format for Transport of MPEG 4 Elementary Streams J van der Meer et al November 2003 IETF RFC 2326 Real Time Streaming Protocol RTSP H Schulzrinne et al April 1998 IETF RFC 2327 SDP Session Description Protocol M Handley et al April 1998 16 3 MULTICAST IETF RFC 1112 Host Extensions for IP Multicasting S Deering August 1989 IETF RFC 3171 IANA Guidelines for IPv4 Multicast Address Assignments Z Albanna et al August 2001 IETF RFC 3180 GLOP Addressing in 233 8 D Meyer et al September 2001 IETF RFC 3138 Extended Assignments in 23
86. etwork The network parameters are normally set using this page but alternatively they may be entered through the use of commonly available USB memory sticks When shipped the units are setup with DHCP enabled The DHCP setting means that any network or router which provides DHCP services will automatically assign an IP address to the unit This address is reported on the display screen during initial bootup Once that address is noted the installer may use the web interface and Network Configuration page to assign the unit to any statically desired IP address which will take effect on the next power on cycle If this method does not work use the USB stick method discussed below NCast Presentation Recorder UE 4 oe IMEI wie Quick Start Channels Archives Configuration Status Network DHCP Y HTTP Proxy Note Reboot unit to activate changes SNMP Apply Slave Unit Remote Logging NCast Corporation Revision 2 2 Page 59 NCast NCast Presentation Recorder Reference Manual The following parameters may be configured on the Network page 7 3 1 DHCP If DHCP is enabled the unit will automatically receive an IP address from the network s DHCP server Some networks require MAC address registration with the DHCP server before an IP address can be allocated The MAC address is on a label on the bottom of the chassis and is also reported on the Network Configuration page If DHCP is disabled a static IP ad
87. features of the Basic model but in addition will record in 1080 definition stream in 1080 but simultaneous recording and streaming at this resolution is not allowed There is also an HDMI output connector for an all digital connection to a display monitor 1 5 PRESENTATION RECORDERS ULTRA MODELS The Presentation Recorder Ultra has all the features of the Extreme except HDMI Out and in addition supports 3G SDI digital input NCast Corporation Revision 2 2 Page 7 NCast NCast Presentation Recorder Reference Manual 1 6 PRESENTATION RECORDERS CONNECTOR OPTIONS The following diagram describes the back panel connectors available Line Out XLR Audio Line In Display Port In a VGA Loopback DVI Component In HDMI In Composite In Backpanel for PR HD Basic M PR HD Basic P e Serial Control Wired control from a touch panel such as Crestron or AMX Ethernet Connection to the Internet XLR Audio Balanced XLR input connector and additionally a balanced 0 25 connector VGA Input from the presenter s PC e VGA Loopback VGA output usually to the room projector VGA Component Out RGBHV or Y Pb Pr output to the local display e USB For specifying a static IP connection with a USB drive or saving an archive file Line In Line Out Mic In Unbalanced 3 5 mm audio connections Stereo for Line In Line Out HDMI Video input from cameras or computers a
88. g means different things to different people Common tasks related to manipulating archive files would include these different activities Reducing resolution and reducing the frame rate to downsize the file to smaller formats and smaller bit rates so lower power PCs can successfully play them back e Cleaning up a file by removing unneeded material at the beginning end or in the middle of a file e Converting archive files to another format e g conversion to RealMedia or WindowsMedia formats e More complex editing tasks such as adding titles inserting other video sequences or material that was not in the original presentation selectively adding or deleting sequences or scenes from the original file rearranging the order of the presentation adding fancier transitions or wipes and technical work such as fixing color balance e Creation of DVDs VCR tapes CDs etc from the original material Obviously this could be a long list and the above items are only representative The nature of MPEG 4 files one keyframe frame followed by many differential frames P B frames is hard for a video editor to deal with directly Any type of more complex edit would require conversion of the archive files to an I frame only format Motion JPEG or DV format for example where differential frame interpolation is no longer required Quicktime Pro an inexpensive add on to Quicktime player for both MACs and Windows is suitable for taking the or
89. g when a session is active The automatic upload mark is preserved after system shutdown or reboot Manual upload is available from the Archives page where a user may choose to upload one archive or all archives The selected archive s will be marked for manual upload Manual upload is executed immediately and can start when a session is active The system will upload archives marked for manual upload before archives marked for automatic upload The manual upload mark is not preserved after system shutdown or reboot When the archive is being uploaded to the target destination its transfer progress is shown on Archives page 5 11 2 When to Start Uploading This menu pulldown schedules automatic upload It will start immediately after capture or in the selected 1 hour time window i e After 18 00 means upload after 6 00 p m not after an 18 hour delay NCast Corporation Revision 2 2 Page 45 NCast NCast Presentation Recorder Reference Manual Edit Channel Upload A Automatically upload recordings w When to start uploading Immediately Remove mmediately ir upload is finished After 00 00 After 01 00 After 02 00 Set ul A ar D3 00 Connection Test After 04 00 After 05 00 z After 06 00 l After 07 00 After 08 00 Primary Protocol y Uplo Set s Set port number 21 Enable anonymous login Set upload directory Previous Next 5 11 3 Remove Recording After Upload is Fini
90. ge 103 NCast NCast Presentation Recorder Reference Manual especially true if there are non native language speakers or listeners Clean audio can be achieved by following these steps e Lavalier Microphone The best audio capture is through use of wireless lavalier lapel microphone on the speaker Including one in the Presentation Recorder gadget bag is a really good idea The levels will be consistently correct through experience and the results will be predictable e House Audio If the conference staff is setting up audio ask for a feed from their mixer It is usually easy to get a balanced or unbalanced feed if asked for in advance A balanced feed going into a small mixer e g a Mackie 12 channel or similar which then plugs unbalanced into the Presentation Recorder is an excellent solution The operator can instantly adjust and check levels The Presentation Recorder has an option for external connections to balanced audio e Audio Meter Use the Audio Meter on the local loopback display to confirm correct level into the Presentation Recorder Audio peaks should be 2 3 to high on the meter Listen to the webcast archive Do an audio pre check and listen to the final recorded audio from the Presentation Recorder Make sure the levels are correct and that noise hum or other problems are eliminated e Audience Microphones If the audience will be interacting and asking questions arrange for wired or wire
91. ge of the unit and then transferred to the external USB drive Transfer to USB drives formatted with NTFS is not recommended due to extremely long transfer times 5 11 18 Presentation Server Upload to a Presentation Server utilizes a specialized open standards protocol the Matterhorn Capture Agent REST API The credentials to access a Presentation Server are setup in the Configuration Presentation Server tab A recording for a Presentation Server may be initiated via two different methods e Use of the Scheduler on the Presentation Server e Locally through in room controls the web page java programs or Google calendar In the case of using the Presentation Server scheduler the Series and Workflow in effect for the archive come from entries in the scheduler Edit Channel Upload Automatically upload recordings 4 When to start uploading Immediately Remove recording after upload is finished Y Primary Secondary Set upload method Connection Test Presentation Server Set workflow Not Set Set series Not Set Previous Next For locally initiated recordings the Channel preset will be used to specify this information Thus starting recordings on different Channels may be used to upload the recording to a different Series or to assign it to a different processing Workflow Set workflow A Workflow is a series of processing steps in the server to ingest transcode and distribute the file as
92. ght of the projection screen as viewed from the audience the following layout shows the correct positioning for the PIP window NCast Corporation Revision 2 2 Page 95 NCast NCast Presentation Recorder Reference Manual The Telepresenter How it works N Cast TAKE STREAMING FURTHER RGB WGA Cable Room Projector YA Bo ne y 11 1 2006 If the podium is to the left of the projection screen as viewed from the audience the following layout shows the correct positioning for the PIP window RGB VGA Cable IP Network 1 gt B Remote Units co The point being made here is that in planning for a conference or seminar recording rooms may have a podium right or podium left configuration and the overlay graphics which are created must be able to accommodate right side or left side speaker placements the speakers naturally look at the projected graphics while presenting Here is an example of a mismatched left right alignment NCast Corporation Revision 2 2 Page 96 NCast NCast Presentation Recorder Reference Manual Telepresenter Features e UXGA 1600x1200 quality N Digitizes RGB signal for display 1600x1200 max input N Real time compression 30 fps M3 8 10 fps S e Streaming graphics capability n Multicast Unicast N Room to Room N Room to Desktop e Archiving support Manual or automatic capture e Standards based N MPEG 4 on RTP encoding e Low Bandwidth Requirements N Variable
93. gnificantly affect the size of a file but adds slightly to the post Session processing time required Uncheck this box if files will not be used in progressive download environments 5 10 9 Enable Final Cut Compatibility Fix Due to certain limitations in Final Cut software related to frame rate and variable frame length processing a special fix up operation is required if this file will be imported into a Final Cut editor Only check this box if Final Cut import will be needed as it adds to the post processing time required for the file NCast Corporation Revision 2 2 Page 44 NCast NCast Presentation Recorder Reference Manual 5 10 10 Enable Blackout on Pause and Resume This options add a fad in fade out special effect when the recording is paused 5 10 11 Special Text Variables Metadata for the Title Presenter Description information is only created after a Channel amp Session is started and recording commences By default this information is pulled from the Channel template preset In most cases however it s desirable to alter this information for each instance of a recording saving new Title Presenter Description information One method to do this is to click on the Edit operation on the Archives page either during or after a recording Another method is to send serial commands RT RP RI to the unit after recording has started To provide for the situation where Title Presenter Description information needs t
94. iginal files and exporting them to a variety of other formats for further editing or simple playback in the new format It is not a video editor and should be used just for straight export of the original files to the new format Adobe Premiere a well know and very popular video editor from Adobe Adobe After Effects available on PCs and MACs is a high powered full featured video editor which is very popular with professional videographers and which can do almost any video editing or rendering task known to man It is however expensive in both cost and time to learn This package can import the archive files directly Final Cut Express and Final Cut Pro are two popular video editors used with Apple computers Squared 5 MPEG Streamclip is an application for editing Presentation Recorder MPEG 4 files setting In Out points and converting to different formats such as AVI and DV The archive files are at the ultra high end in terms of resolution and frame rate and that processing times for these files are not trivial with rendering times often being 3 to 7 times real time one minute of material may take three minutes to export for example A high powered PC is absolutely essential with something like a 3 GHz Pentium with 1 5 GB of RAM being the required hardware A 1 GHz laptop with 256 MB of memory will not do the job Customers should carefully assess what their target audience requirements are and make recordings in reduced resolu
95. ike A randomly chosen string greater than 8 characters in length is suggested 7 4 4 Coordinator password The Coordinator password allows access to the Archive files 7 4 5 Verify user password Viewer user passwords are not currently in use with this release 7 5 DISPLAY The Display settings control activity relative to the local display attached to the Presentation Recorder If activated this display normally loops back the graphics or video signals selected on the input connectors after digitization of the signal The displayed material shows the final form composition of what will be compressed and recorded except for the audio meter or OSD if present Also if graphic overlays are being used these will appear on the local loopback display NCast Corporation Revision 2 2 Page 64 NCast NCast Presentation Recorder Reference Manual NCast Presentation Recorder MOE amp wie Quick Start Channels Archives Configuration Status Display Mode 720p 60 Hz Configure OSD Colorspace RGB Loopback 4 Loopback framerate Full OSD a OSD position Bottom Right Apply 7 5 1 Mode Allows a choice of output resolutions 720 or 1080 Extreme and Ultra models only 7 5 2 Colorspace Early models of the Presentation Recorders only supported Component Y Pb Pr output connections Later models introduced support for RGB output This control allows selection of the type of output signal generated on th
96. in_window gt lt pip gt 1 lt pip gt lt pip _window gt 0 0 320 180 lt pip _window gt lt bit rate gt 1064 lt bit rate gt lt frame rate gt 30 lt frame rate gt lt file format gt mp4 lt file format gt lt video_format gt h264 lt video_format gt lt audio format gt aac lt audio format gt NCast Corporation Revision 2 2 Page 54 NCast NCast Presentation Recorder Reference Manual lt archive gt The use of XML format allows the content to be encoded in the Unicode UTF 8 character set The lt main_window gt and lt pip_window gt tags record the position of these windows at the start of a session This information may be useful for downstream video editing processes which wish to extract video or graphics details from these windows The video_format types currently supported are mpeg4 and h264 There is currently only one audio format available aac 6 1 3 Upload Button Clicking on this button marks this archive file for immediate upload via FTP or Secure FTP to the configured FTP server see Section 5 11 for details on S FTP server setup The upload is executed immediately and can start when a Session is active Immediate upload may interfere with ongoing Session streaming and should be used cautiously or not at all if network bandwidth is not available to support both streaming and file transfer The S FTP information is specified on a Channel basis Since each Channel has its own
97. io TV Interference Problems Stock Number 004 000 00345 4 available exclusively from the Superintendent of Documents Government Printing Office Washington DC 20402 telephone 1 202 512 1800 FCC WARNING Changes or modification not expressly approved by the party responsible for compliance to Part 15 of the FCC Rules could void the user s authority to operate the equipment CE NOTICE INFORMATION FOR THE USER NCast Corporation Revision 2 2 Page 4 NCast NCast Presentation Recorder Reference Manual This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to EN 55022 Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at the expense of the user The user may find the following publication prepared by the Federal Communication Commission helpful How to Identify and Resolve Radio TV Interference Problems Stock Number 004 000 00345 4 available exclusively from the Superintendent of Documents Government Printing Office
98. ion Port Number In addition to a multicast address each media stream requires a unique port to be assigned Ports must be even numbered the succeeding odd number is used for control purposes and must be available Port numbers range from 1024 to 65 535 and this range is divided into two parts the Registered Ports are those from 1024 through 49151 and Dynamic and or Private Ports are those from 49152 through 65535 In practice multicast applications assign port numbers in the range of 5002 and up The port range 1024 5000 is typically used by a Unix system to assign ports to applications desiring an automatically generated port number Even if different multicast addresses are being used it is recommended that different port numbers be used for the different media streams graphics audio and collaboration On some system implementations use of the same port number will cause errors For multicast traffic to get through a firewall the even odd pair defined in this entry must be opened by the firewall administrator 5 7 3 Set Video Stream Destination MTU The Maximum Transmission Unit MTU is the maximum length of a packet and is normally set to 1500 For some special circuits satellite links others the maximum size may need to be adjusted downward to avoid packet fragmentation which leads to inefficiencies and possible packet loss 5 7 4 Set Audio Stream Destination Address An address entered for Audio the Audio media
99. kn 108 11 Baca MDI id de ds 108 14 2 Meni PIP Input Compatibility Chart ii nanenane anA eitan iaia 109 15 Teme and OS A ia 110 15 1 Audio and Video Terms and DOMO A aan Sent an nad 110 16 PTOS tir A deceaadaateniataaad aaaubbe slapeaaauaonebesedaaunielanaiieagunias 112 TEA PES A ie eaten Al a et lat a ie ae i ed a ce ce eta es 112 10A Packat kans EA aes eee diced A ites once coe lee 112 Ae Me MUNN els cic teateec tetas gabe idiincnd rl A A A 112 A NN cs a cei acta py stances vaste COE vanes avd NAN OEI EE 113 NCast Corporation Revision 2 2 Page 3 NCast NCast Presentation Recorder Reference Manual Regulatory Compliance Information Equipment Label The Presentation Recorder meets all applicable FCC CE and ICAN radiation and emission standards Report 3054 1 Electromagnetic Compatibility Test Report E M G E 47 CFR Part 2 Subpart J Paragraph 2 906 ENGINEERING Report 3054 2 Electromagnetic Compatibility Test Report ECD 2004 108 EC LVD 2006 95 EC 44366 S Grimmer Blvd Fremont CA 94538 510 490 4307 510 490 3441 Fax 1 Connections between peripherals of this equipment may be made with low voltage non shielded computer data cables 2 Network connections may consist of non shielded CAT 5 cable Warnings 1 A non shielded power cord may be used to connect AC power to every component and peripheral of the system FCC NOTICE This device complies with Part 15 of the FCC Rules Operation is su
100. l frame rate and bit rate at HD720 resolutions modern PCs in the 2 GHz class are required For the lowest bit rate 128 kbps a resolution of 640x480 and a frame rate of 5 frames second for graphics or 10 frames second for video are recommended There is no way to define the optimum settings for a given application It depends on the material being presented the expectations for motion smoothness and embedded video performance the equipment available to the receiving audience the maximum network bandwidth available and other factors The only way to determine the optimum settings for a particular installation is to run tests on the material being presented using the network at hand 5 6 4 Key Frame Interval Changes the number of seconds between key frames I frames Note This parameter is for advanced users only who fully understand the relationship between this setting and the impact it might have on other encoder settings and encoder performance Use extreme caution when modifying this value 5 6 5 Min Quantizer and Max Quantizer These options set minimum and maximum video quality The valid range is from 1 best quality to 31 worst quality The default range is 2 31 for MPEG 4 For H 264 the range is 0 51 default is 10 51 Decreasing min quantizer will increase the maximum possible video quality and increasing min quantizer will decrease the maximum possible video quality Increasing max quantizer will decrease minimum permitte
101. less audience microphones and insist on their use A long dead silence during an audience question followed by a speaker response to a question the remote viewers did not hear is very frustrating Ask the speakers or chairperson to always repeat or summarize the audience question e Panel Microphones If there will be a panel discussion insure that a suitable number of microphones for the panel discussion is available 13 2 4 Automatic Recording A Presentation Recorder Channel can be setup to automatically start recording when a Session is started This is probably the best solution for guaranteeing that the recording will happen 13 2 5 Graphics and Video Swap Usually during conferences there are periods when no active or meaningful graphics are being displayed e g during Q amp A sessions panel commentaries introductions Be prepared to swap the video and graphics windows during these times The Swap button on the Sources web page will do this easily 13 3 CONFERENCE DAY PROBLEMS AND ISSUES During the actual conference or seminar these problems and issues may occur 13 3 1 The Podium The Presentation Recorder screen capture composition has a natural podium left or podium right orientation If the exact room layout is not known in advance two composition setups will need to be ready for use and the operator will need to know how to setup a left or right arrangement Speakers naturally look at the projection screen while they
102. ll the cable connections ahead of time to insure correct mating or bring along enough gender changer adapters to accommodate misconnections e Projector Loopback Output Some projectors have a loopback output connector and that is a suitable place for the Presentation Recorder to capture the graphics signal e Presentation Recorder Loopback Output The room projector can be plugged into the loopback output of the Presentation Recorder e Matrix switcher Some A V setups have an XGA matrix switcher as part of the room installation and the Presentation Recorder could plug into one of the output connectors on that device 13 2 2 Capturing Video The video signal for PIP or side by side video is usually easy to obtain Most cameras have Composite or S video output connectors available and only an appropriate cable is required to connect to the Presentation Recorder Make sure that the camera s video output does not have time date stamps battery icons or other clutter on the signal being captured There are usually menu options to turn these information icons off e Arrange with the conference staff to have one or two spotlights on the podium Often the room lights will go dark so the audience can see the projection screen and if there is no lighting on the speaker the video quality deteriorates rapidly Ask the speakers to not wander from the lighted podium area e A dark background behind the speaker leads to visually plea
103. m the remote sender 3 7 AUDIO SUBSYSTEM Each Presentation Recorder supports an audio subsystem consisting of an high quality codec and associated input output connectors The unit has microphone and line level input signals and a line level output signal Each line level connector supports stereo signals An XLR connector provides for mono balanced audio input Audio input via the HDMI connector is not currently supported 3 8 ARCHIVE FLASH Disk A flash memory card in the Presentation Recorder is available for recording transmitted sessions The file format is standard MPEG 4 Part 10 H 264 mp4 which can be played on a variety of desktop client players or these same files can be installed on a video streaming server for on demand playback over the Internet All unit come with 32 GB of storage standard and an additional 32 GB of storage may be purchased as an option NCast Corporation Revision 2 2 Page 18 NCast NCast Presentation Recorder Reference Manual 4 Quick Start Configuration and Setup 4 1 QUICK START PAGE ORGANIZATION The Quick Start page is the primary control page for the Presentation Recorder and has six distinct functional areas e Channel Selection A Channel is a preset or template containing all layout and startup parameters e Source Selection Input connectors are assigned to the active windows in a video frame e Streaming Control Streaming session activity on a Channel is started or stopp
104. m_acc Password ncast Media flavor Presenter Source Channel Custom Serial command C1 Apply 7 8 10 Troubleshooting the PS Installation Use the following checklist if there are problems in getting the encoder to work with the server 1 On the Configuration gt Presentation Server tab double check that the correct server address port and credentials have been entered Try the Connection Test and or view the upcoming Schedule At this point the encoder should be registering as a Capture Agent and its status should be visible on the server s Capture Agent page 2 There is no Capture Agent configuration required on the server The Capture Agent simply registers with the server and tries to pull down its upcoming schedule If there is no status visible make sure that the encoder s DNS settings are correct and that there is no firewall blocking the ports often 8080 used to communicate with the server Make sure each Capture Agent has its own unique name Getting the encoder to register with the server is a critical step and must completed for anything else to work NCast Corporation Revision 2 2 Page 73 NCast NCast Presentation Recorder Reference Manual 3 If the status shows that the Capture Agent is registered next try to manually start stop a recording Modify a Channel for PS Upload as described previously Select the desired Workflow and Series Make sure that the Channel is set for Auto recor
105. me text track http www apple com education accessibility technology quicktime_cc html The following sample smil file launches a QuickTime player with a closed caption text area lt xml version 1 0 encoding UTF 8 gt lt smil xmlns qt http www apple com quicktime resources smilextensions xmlns http www w3 org TR REC smil qt time slider true gt lt head gt lt meta name title content NCast PR HD Series Commercial gt lt meta name author content VP Sales gt lt meta name copyright content NCast Corporation 2007 gt lt layout gt lt root layout height 285 width 330 background color black gt lt region id videoregion left 5 height 240 width 320 top 5 background color black gt lt region id textregion left 5 height 40 width 320 top 245 background color black gt lt layout gt lt head gt lt body gt lt par dur OOO lt video region videoregion src rtsp www ncast com archives NCastCommercial320x240 mp4 dur 0 03 14 10 gt lt textstream region textregion src http www ncast com archives NCastCommercial en US qt txt dur 0 03 14 10 gt lt par gt lt body gt lt smil gt The txt file used to play back the captions is shown here OTtext timescale 100 font Arial size 12 backColor 0 0 0 ESV ECO log 69333 33938 G99 with 20 quest ty let OO 200 302 69 Have you ever wanted to communicate with someone face to f
106. ming LED Indicates if the unit is active and in Session e Recording LED Indicates if the unit is recording When the OSD checkbox is checked two pairs of audio meters appear on the local loopback display connected to the Presentation Recorder The audio meter window is never transmitted over the network nor recorded as part of the media stream The stereo meters on the left show local audio activity originating from the microphone or line level inputs The stereo meters on the right show network activity that is strength of the audio derived from the incoming media stream in full duplex or collaboration mode NCast Corporation Revision 2 2 Page 65 NCast NCast Presentation Recorder Reference Manual The local meters are useful to check for proper connectivity and activity of the sound system connected to the Presentation Recorder The levels should be checked for proper range and gains should be changed if the audio is too hot or soft 7 5 6 OSD Position The OSD positioning controls Top left Top right Bottom left Bottom right allow the meter display to be set in an area of the screen that does not obscure other important windows like the PIP window for example 7 5 7 Configure OSD The contents of the OSD can be tailored to contain only those elements required to be shown on the screen OSD IP address Audio capture meter Audio playback meter Streaming status Recording status Status on color
107. mining if the PIP window obscures any portion of the Main window It can be placed on top of or outside of the Main image 5 4 2 PIP Border If this control is selected a small border is drawn around the PIP window NCast Corporation Revision 2 2 Page 30 NCast NCast Presentation Recorder Reference Manual Edit Channel Layout x PIP PIP Border Background 2 3 4 Upload 91 92 93 a4 Main window 4 Left 320 Top fo i Width 960 Presentation Recorder Height 720 PIP window Left 0 Top 0 Width 320 Height 180 4 Overlay 1 Left 0 Top 180 Width 320 Height 540 Previous Next 5 4 3 Background A Background graphic or underlay may be enabled and uploaded to the recorder It is positioned as the lowest level graphic in the composition All other windows and overlays will placed on top of this graphic Press the Upload button to upload the background image 5 4 4 Graphical Overlays 1 4 Customized images may be added to the media stream being created These images would typically be corporate or organizational logos trademarks or watermarks copyright statements media content or date annotation or descriptive information on the course or presentation being viewed speaker topic etc There can be up to four different Overlay images per Channel 100 images total These images must be created in jpg png or gif format The dimensions of the image must match exactly the
108. ms and should be avoided Start of Talk Ideally the presenter s discussion should start once the proper graphics are being projected and no sooner Repeat the Question If there are audience questions or comments the speaker should repeat them or summarize them for the viewing audience 13 3 4 The Conference Audience The conference audience should be informed that a webcast recording is underway and that a few rules need to be applied Audience microphones The audience needs to use the audience microphones any time a question or comment is being given The MC and or speaker needs to help enforce this directive Public audience Comments provided by the audience are being recorded and archived so that any type of inappropriate comment personal attack sexist joke or other outburst should be avoided 13 3 5 Summary Fixing these problems in post production is very time consuming and expensive and recompression degrades the quality of the captured material With these relatively minor changes and help from the organizers and the MC and perhaps a little training for the speakers the recordings will be captured well and become great historical archives worthy of the effort NCast Corporation Revision 2 2 Page 105 NCast NCast Presentation Recorder Reference Manual 13 4 VIDEO POST PRODUCTION If there is a need to do some minor editing on an archive file there are tools which can clip and trim the ar
109. n Full Swap PIP Recording PIP input VGA DVI D DVI A HDMI DisplayPort Composite PIP Full Start Similarly the audio inputs are selected by the audio button Choices include e Mic Microphone jack input Line in Line jack input XLR Balanced audio input Input gain Input level adjustment for the above inputs e Output gain Speaker output level NCast Corporation Revision 2 2 Page 21 NCast NCast Presentation Recorder Reference Manual e Loopback gain Controls the feed from the input signal to the output Watchout for feedback NCast Presentation Recorder WG 4 Quick Start Channels Archives Configuration Status Channels Select a Layout z N Cast N WS pj Sources Video Audio Advanced Overlays aves a E a Streaming Input Mic Linean XLR gt Start Input gain gt gt 21 Output gain 100 Recording Loopback gain gt 0 gt Start The other buttons on this line control these functions e Advanced Fine adjustment and positioning of the images e Overlays Shows or hides the graphical or text overlays allows edit of text overlays e Preview Creates a static image of the frame being captured Video Overlays a 1 2 Image overlays Off Off Off Off Off Off Off Text overlays Edit Edit Edit Edit 4 4 STREAMING START STOP The Streaming Start button activates a streaming recording session based on
110. n be informational like Archive uploaded or Recording Started Normally or they can be error reports such as Recording Start Failed Disk Full or Archive Upload Failed See Section 7 9 for information on how to setup system wide error notifications 5 12 1 Channel N Settings Notifications Each Channel provides for entry of an e mail to be associated with that Channel Channels are often used in conjunction with specific presenters or Departments so the person or Department most closely associated with the operation of that Channel will be informed of any normal or unusual events A typical use would be to inform a presenter or lecturer that the recordings and transcodes have completed and are available on the VOD server See Section 7 9 for detailed information on the entries required for this page Click on the Select Events button to choose which events to report NCast Corporation Revision 2 2 Page 51 NCast NCast Presentation Recorder Reference Manual Edit Channel Notifications Set e mail address Set e mail from address Set SMTP server Set SMTP port numer 25 Enable SMTP authentication Y Set SMTP username Set SMTP password Enable SSL TLS Connection Test Select Events Previous Finish 5 12 2 Channel N Settings Notification Events A subset of all system wide events is available for Channel specific notifications A system wide event would report th
111. n required in the General dialog and click Next 3 Select HD720 and Square Pixel from the Edit Channel Frame Size dialog and click Next 4 Select the windows and overlays which will be present in this composition In this case only PIP and Graphical Overlay 1 will be selected All other elements will be deselected 5 With the mouse drag the Main window the PIP window and the Graphical overlay to their correct positions Window overlay size or dimensions may be changed by dragging on the lower right corner of the window Take a look at the coordinates in the display info boxes to see that there is no overlap Click on the Upload button and upload the jpg png or gif image of your choice Note the size of the image must match exactly the space allocated for it These incoming files are NOT scaled to fit the windows 8 Press Next and complete the remaining dialog boxes in the Channel editor 9 You re done The Presentation Recorder is now ready to stream the composite image as defined in this example 11 1 2 Overlay Layout Placement Conference rooms or presentation auditoriums typically have the speaker s podium to the right or left of the projection screen being viewed by the audience A potential problem in using the PIP video window or speaker shot as a side by side layout is to position the window in the wrong spatial relationship to the screen being discussed by the presenter If the podium is to the ri
112. nd e Audio Create an audio recording with no video 5 2 4 Auto Start Session If the Auto Start checkbox is enabled on a Channel then Session activity for that Channel will automatically resume when the unit is rebooted or restarted after a power failure 5 2 5 Auto Start Recording Recording starts and stops when the Session starts and stops 5 3 EDIT CHANNEL FRAME SIZE 5 3 1 Set Frame Size The Frame Size defines the dimensions of the Frame a surface capture surface or the canvas which is the primary imaging surface on which the composite image Main window PIP window Overlays is drawn The resolution and aspect ratio of the transmitted or archived media stream aligns exactly with the resolution and aspect ratio of the Frame Consequently selection of one of the default frame sizes and aspect ratios or definition of a custom Frame Size and possibly a custom Aspect Ratio is the first step in defining the format of the media stream which will be produced by the Presentation Recorder The Frame NCast Corporation Revision 2 2 Page 29 NCast NCast Presentation Recorder Reference Manual can have any dimension or aspect ratio with the limitation that the maximum dimensions are 1280 x 720 for the PR HD Basic model Edit Channel Frame Size A Set frame size HD720 1280 x720 Set aspect ratio Square pixel Previous Next Once the frame is defined the next step is the X Y placem
113. neral The Channel name and the type of Channel operation desired Layout The frame size aspect ratio position of the Main and PIP windows and graphical overlays Quality The video and audio quality desired and respective bit rates Network The Channel s multicast or unicast addresses Recording Archive filenames and other recording parameters Upload Disposition of the archive file once the recording has completed Notifications Email messages to the administrator of the C hannel The Quick Start page allows for a limited selection of factory default settings More comprehensive modifications to a Channel are done from the Channels tab 1 Presentation amp Video O Type Framerate Customize Overlays Standard definition video PIP and XGA computer main window with 1 static graphic overlay Frame Quality Number of Overlays Automatic Unicast 1280x720 30 1 0 Mbps 1 OK Cancel The first dialog box allows selection of a number of standard bit rates and the upload of custom graphics for overlay Select the lower speeds for material that is mainly graphics and the higher bit rates for video material 1 Presentation amp Video Type Frame Framerate Quality Number of Overlays Customize Overlays Standard definition video PIP and XGA computer main window with 1 static graphic overlay Automatic Unicast 1280x720 30 512 kb
114. o a network plug in a display to the VGA Out plug your laptop into the VGA In a camera if you have one into a video connector and turn on the power If you aren t using DHCP and need to enter static IP addresses edit a ntwkconf txt file onto a USB stick and plug it into a USB port See the Configuration Network tab 7 3 16 for details on this file 2 When you see the bootup screen with the IP network address log into the unit at http ipaddress using admin as the user and ncast as the password 3 Go to the Configuration Personal tab and fill in all the information required NCast Corporation Revision 2 2 Page 12 NCast NCast Presentation Recorder Reference Manual 4 On the Quick Start page select the Channel Layout you desire The icons represent the composition of the frame which will be recorded and allow for many different combinations of video inputs graphics inputs and graphical overlays 5 The dialog box allows you to choose one of the unit s standard video profiles and permits you to upload a custom graphical overlay to replace the factory default 6 Select the Video and Audio sources you have connected to the recorder The Main input is normally associated with graphics capture and the PIP input usually contains the video camera You should see your captured graphics and video on the local display screen Check your audio levels on the meter Press the Streaming Start button to ac
115. o be entered prior to recording start say from a scheduling system or data input from an instructor some special text formatting variables were created to solve this need These formatting variables take the form 0 to 9 and the contents of each variable may be sent to the unit via serial commands TA TJ To use the variable to create a new title simply enter 0 in the Title field The metadata will contain a title with the contents of the Text 0 variable TA command The substitution of the n format variable with its underlying text occurs at recording start so any changes after that time will not be recognized The current contents of the Text variables may be viewed on the Configuration gt Custom gt Texts tab 5 11 EDIT CHANNEL UPLOAD The Upload tab provides for automatic upload of archives to a streaming server using File Transfer Protocol FTP or Secure File Transfer Protocol SFTP to a locally inserted USB stick to a Presentation Server or to a Kaltura Server 5 11 1 Automatically Upload Recordings Automatic upload transfers archives automatically at a scheduled time or immediately after creating the archive The system marks an archive for automatic upload right after it was created if auto upload is enabled If auto upload is disabled archives are not marked and will be not uploaded even when auto upload is later enabled Archives marked for automatic upload will not start uploadin
116. oming stream Through use of the RTMP protocol live streaming to CDN s Adobe FMS Wowza Evostream and other reflecting servers becomes possible e Streaming with RTMP and Recording Same as above but simultaneous recording is enabled e Automatic Unicast using RTSP The unit will utilize the services of a streaming server for rebroadcast reflection of the incoming stream Through use of the RTSP protocol an announcement is sent to the server indicating a new streaming session is starting NCast Corporation Revision 2 2 Page 28 NCast NCast Presentation Recorder Reference Manual e Automatic Unicast using RTSP and Recording Same as above but simultaneous recording is enabled Streaming Receive The unit will be receiving a transmission from some other source on this network Edit Channel General O Set channel name Presentation and Video Set channel description Presentation and Video Select channel scenario Send stream to RTMP server Select m Record to file Send unicast or multicast stream Send unicast or multicast stream and record to file Do you v Send stream to RTMP server Send stream to RTMP server and record to file Send stream to RTSP server Send stream to RTSP server and record to file Next NN PS AA m 5 2 3 Select Media The media choices Video amp Audio Record with all media video and sound e Video Create a video recording with no sou
117. on Recorder only records the file to storage Once the Session has ended the file may be automatically uploaded to a video on demand server for later playback by client PCs or mobile devices Recording PR HD a NG Presenter s PC Upload Video on Demand Playback Presentation Server Client PC Send a Unicast or Multicast Stream In this mode of operation one of the Presentation Recorders is designated as the Sender and all of the other units are designated as Receivers The media streams originate from the Sender and are decoded by one or more Receivers or desktop client media players The transmission is strictly one way and no feedback or interactivity is provided for The one to many operation is enabled via use of multicast connected networks The unit is able to stream and record simultaneously Sending PR HD o Presenter s PC Receiving PR HD Client PC NCast Corporation Revision 2 2 Page 14 NCast NCast Presentation Recorder Reference Manual Send a Unicast or Multicast Stream and Record to File This mode of operation is the same as Send a Unicast or Multicast Stream with the addition of simultaneous recording an archiving of the captured Session The archive is first stored internally in local storage and once the Session is finished the archive may be uploaded to a distribution server or to a locally attached USB drive Send a Stream to an RTMP Server For live streaming the Presen
118. oogle calendar Enables or disables scheduling using Google Calendar data e Google username The account containing the calendar to be used e Google password Password for the above account e Google keyword Unique identifier for the calendar entry e iCalendar Enables or disables scheduling using an iCalendar file e iCalendar to upload Use this item to enter the filename of the iCalendar scheduling file which will be used 7 7 13 View Buttons These buttons allows the operator to check on scheduled events e View Google Check on activities scheduled by Google calendar entries e View iCalendar Check on activities scheduled by Calendar entries 7 7 14 Viewing Scheduler Activity The Logs page See Section 8 3 permits viewing the scheduler activity logs for possible error messages reports on scheduled events and other actions The Serial log contains information on serial command activity 7 7 15 External Scheduler Program There is an external utility program available in the Python programming language which may be used to schedule multiple Presentation Recorders from a single central location Check the download area of the NCast website for this utility 7 8 PRESENTATION SERVER 7 8 1 Credentials and Configuration The upload process to PS fits into the Upload method used by the Channel architecture of the encoder Upload to PS is conceptually no different than say and FTP upload to any other conten
119. ook natural These high frame rates deliver smooth animation and video playback that most viewers will find acceptable 5 6 3 Bit Rate The video bit rate in kilobits per second defines the maximum bit rate that the encoders may utilize in creating the media stream For static images the bit rate may decrease from this peak level The following table lists the absolute minimum recommended bit rates for high frame rates NCast Corporation Revision 2 2 Page 35 NCast NCast Presentation Recorder Reference Manual Resolution Minimum Bit rate Preferred Bit rate QVGA 320x240 128 kbps 192 kbps VGA 640x480 220 kbps 330 kbps SVGA 800x600 310 kbps 465 kbps HD720 1280x720 550 kbps 800 kbps Settings below these values will generate pixelation and other visual artifacts in the received image Also use of the minimum bit rates will increase end to end latency may reduce the visual clarity of the image and introduce lip synch problems As with any other type of compression system there is a complex interaction between bit rate frame rate image resolution and end to end latency For HD720 images settings above 1000 kbps generally produce excellent results The lowest latency is achieved by setting the bit rate to the maximum permitted which is 5 000 kbps Reducing the bit rate frame rate and resolution will allow older PCs operating at lower performance levels to decode the received imagery without skips and stutters For the ful
120. out AV Sync Brightness O 50 Contrast Y 50 t Saturation 18 50 e gt Hue 19 50 A Reset The following table shows the allowable ranges of adjustment Control Brightness Contrast Saturation Hue For each Control there are four adjustments for the five different inputs VGA DVI D HDMI Composite and Displayport 9 3 2 Advanced Settings Fine Position These buttons control fine positioning of the Graphics image VGA DVI A input connector only The image will move a few pixels to the left right up or down when these buttons are activated The center button attempts to center the image properly on the screen 9 3 3 Some layouts are a mix of 16 9 and 4 3 windows If the Swap button is pressed with a mix of two different window aspect ratios there will be distortion When there is a change of speakers with a change of computers there may be a change of aspect ratios for a given connector Keeping all these possible variations captured correctly is a real problem Layout This panel allows fine tuning on how input signals are mapped to their respective windows Techniques of full screen stretching letter boxing and pillar boxing may be used Advanced Settings VGA 8 DVI A DVI D HDMI Composite S Video Layout AV Sync Main window mode Auto Square pixel Full PIP window mode Auto Square pixel Full 9 3 4 AV Sync Viewers notice and are very sensitive to problems with AV Sync
121. peration Recording times may be slightly longer than the above calculation would suggest because the actual bit rate generated during operation varies with the material being encoded and the calculation above should represent worst case conditions Archive files are named with time stamp information indicating the start time of the archive yyyymmdd hhmmss nnn mp4 where yyyy Year of archive mm Month of archive dd Day of archive hh Hour of archive mm Minute of archive ss Second of archive nnn Channel number mp4 File format MPEG 4 The default archive filename may be changed See Section 5 10 2 above NCast Corporation Revision 2 2 Page 53 NCast NCast Presentation Recorder Reference Manual If the archive time is not correct check the Date amp Time Timezone field settings on the Status System tab check for correct DNS entries on the network page and finally determine if any network firewall is blocking access to the time servers configured in the Presentation Recorder The final processing of an archive file occurs when a Session has ended If a Session is active an archive file may be in an incomplete state listed as Captured or Processing After pressing the End Session button all archive files will be finished and converted into a Ready state At the end of a Session the Archive page will show a status of Unfinished for files which are in the process of being hinted optimize
122. perience The principal causes of these artifacts are packet loss due to overloading of the internet connection and processing capability the receiving PC does not have enough CPU capacity to process high resolution high frame rate imagery 2 Distribution to a local audience If transmission is only on a local campus or high speed network then bandwidth is not an issue and can be set as needed There remains the issue of the processing capabilities of the receiving devices 3 Archiving only If the recording will not be transmitted as is but needs to be transcoded into other formats during post production then the highest bandwidth and highest resolution settings available should be used Finally the speaker or presenters need to know that a webcast recording will occur and this may require a written release from the speaker giving authority to capture and distribute the material Speakers may have many different reasons for not wanting a webcast of their material e g a webcast of some research material may be considered a publication by some and they wish to reserve first publication rights for a specific journal or the speaker may be using copyrighted video audio or text in the presentation which may not be freely distributed Doing a recording and finding after the fact that it may not be released is a waste of everybody s time These details need to be worked out and agreed to in advance and not two minutes before the pr
123. perience of doing a number of live meeting and conferences Hopefully the tips and techniques discussed here will aid in avoiding common problems 13 1 1 Objectives for the Webcast or Recording Creating a quality professional recording is not trivial and requires cooperation from the organization hosting the meeting It should be well understood in advance what the ground rules for the recording of the meeting will be 1 The live meeting is paramount the recording will be done on a best effort basis 2 The needs of the live meeting and the recording should be balanced 3 The recording webcasting is most important and the live audience is there for the ride Achieving balance is not difficult and the needs of the webcaster recorder can be accommodated without much extra effort The paragraphs below offer specific tips on how to achieve this balance Another objective that needs definition is the intended audience for the recording 1 Distribution to a wide audience If the captured visualizations need to be seen by a wide audience with a variety of connecting bandwidths and PC playback capabilities then the bandwidth used must be limited i e typically less than 750 kbps and the resolution and frame rate must be restricted i e 800x600 or less and a target frame rate of 15 20 frames per second If these limits are not observed viewers will see various artifacts pixelation stuttering loss of lip sync that lead to a negative ex
124. protocol If the network being used is firewalled and requires the use of HTTP Proxy services then this checkbox must be enabled for proper downloads of new software updates HTTP Proxy Proxy 4 Proxy server Proxy port 8080 Proxy username Proxy password Apply Cancel 7 3 11 Proxy server The IP address symbolic or numeric of the network s proxy server 7 3 12 Proxy Port The proxy server port e g 80 7 3 13 Proxy User If the proxy server requires a username and password for access enter the username 7 3 14 Proxy Password NCast Corporation Revision 2 2 Page 61 NCast NCast Presentation Recorder Reference Manual If the proxy server requires a username and password for access enter the password All changes to these network settings require a reboot of the unit Press the Update amp Reboot button when all entries are complete and you have double checked the correctness of these entries 7 3 15 SNMP Simple Network Management Protocol The SNMP protocol is a widely used industry standard protocol designed to monitor devices of all types e g routers servers switches PC s etc on a network Commercial and open source tools e g Nagios are available to provide comprehensive reports on the health of units being monitored Customers running multiple PR HD encoders may benefit from the use of SNMP to track the availability and performance of their systems The PR
125. ps 1 0 Mbps 2 5 Mbps 4 5 Mbps OK Cancel NCast Corporation Revision 2 2 Page 20 NCast NCast Presentation Recorder Reference Manual Graphical overlays are JPEG GIF or PNG images that may be used to fill in or overlay areas of the frame being captured Create a custom graphic in your favorite photo editing program and upload it to the Channel by selecting Customize Overlays Make sure the dimensions are correct as the Recorder does not do any scaling of the incoming picture Upload Overlays Overlay 1 Browse Image size should be 320x480 file format must be JPEG PNG or GIF Upload Cancel When all selections have been made the new Channel will be ready for use and the new layout will appear on the locally attached monitor 4 3 SOURCE SELECTION The selection of which input signal connector to use for the Main and the PIP windows is accomplished by clicking the Video button in the Sources area This selection may be changed at any time during a recording The Swap button will exchange the Main and PIP window settings The Main Full or PIP Full will expand the Main or PIP window to fullscreen NCast Presentation Recorder 4 Quick Start Channels Archives Configuration Status Channels Select a Layout NCast NCast Sources Video Audio Advanced Overlays Preview Streaming Video Sources o Start 1 Main input vea DVI D DVI A HDMI DisplayPort Composite Mai
126. r Enter the DNS address or IP number of your mail server 7 9 5 SMTP Port Enter the port number needed to contact your SMTP outbound server Normally port 25 the port number might be non standard due to firewall rules ISP restrictions or other requirements 7 9 6 SMTP Authentication Check this box if your SMTP server requires authentication 7 9 7 SMTP Username The username required for authenticated e mails 7 9 8 SMTP Password The password required for authenticated e mails 7 9 9 SSL TLS Check this box if your SMTP server utilizes secure SSL or TLS connections 7 9 10 Connection Test Clicking this button will send a test message to the account listed on this page 7 9 11 Select Events This button brings up a checkbox menu which allows selection of notifications by severity level or by type NCast Corporation Revision 2 2 Page 75 NCast NCast Presentation Recorder Reference Manual Select Events Select by event type Critical Y Error Y Warning C Info C Select by event name Power On Shutdown Reboot Software update start New software update available Digitizer firmware update start Digitizer firmware update finish Session start Session stop Software update finish C Web login wv Web logout C Detected main input signal Detected PIP input signal Lost main input signal Lost PIP input signal Video framerate stall Recording start Recording stop Recording pause
127. resentation Recorder product lines fall under the category of video and or multimedia products and are thus required to implement closed captioning for appropriate compliance 10 4 1 Real time sub titles and chapters There does not appear to be a single widely adopted standard for recording timed event information for use either in sub titles or chaptering Some client players use various forms of txt files and others use xml files The Presentation Recorder implementation has adopted one format which is simple to use and has some existing support in the open source community and works with several players The format is an srt text file type which is described here http en wikipedia org wiki SubRip New serial commands have been added to receive text information and automatically create srt files during a recording These files will be e Available on the Archives page for download e Available for download via our http interface e Uploaded automatically via the FTP upload service Upon receipt of this file a program can easily extract the timing information of interest and create a web page with playback start points of interest For example Quicktime uses the STARTTIME parameter http www apple com quicktime tutorials embed2 html lt embed src sample mp4 width 320 height 240 starttime 00 15 22 5 gt After recording is finished and there is at least one subtitle an srt subtitle file is created which can be do
128. rivate Key button to install the private key for this unit Secure retrieval of files is also possible through use of the HTTPS SSL encrypted interface utilizing either the standard web page or the scripts documented in Section 12 3 of the HTTP interface NCast Corporation Revision 2 2 Page 48 NCast NCast Presentation Recorder Reference Manual Edit Channel Upload Automatically upload recordings Y When to start uploading Immediately Remove recording after upload is finished Primary Secondary Set upload method Connection Test SSH File Transfer Protocol Upload XML file a Set server Upload Private Key Set port number 22 Set username Set password Set upload directory Previous Next 5 11 17 Universal Serial Bus Upload The Presentation Recorders are able to transfer ready archive files to a locally inserted USB drive NCast Corporation Edit Channel Upload Automatically upload recordings When to start uploading Immediately Remove recording after upload is finished Y Primary Secondary Set upload method Connection Test Universal Serial Bus Upload XML file CU Set upload directory Previous Next Revision 2 2 Page 49 NCast NCast Presentation Recorder Reference Manual Due to the wide variety and often poor performance of USB sticks all archive files are first recorded and finished on the internal stora
129. rror and Critical and by their specific action or type e g Session start Recording start etc Events can be system wide e mails are sent to the system administrator or Channel specific a subset of events is associated with a single Channel and sent to an e mail address associated with that Channel System wide events are configured in the Configuration gt Notifications Select Events menu and Channel related events are configured in the Edit Channel Notifications Select Events menu see Section 5 12 The rules controlling event reporting are the same in both cases except for the System or Channel orientation of the activity In summary there is a comprehensive e mail notification system in place to inform the administrator that The disk is full or the Channel owner that Your recording is ready and many other notices 7 9 1 Notifications This dropdown menu selection enables or disables the system wide e mail notification service It does not affect Channel notification activity 7 9 2 E mail Address Enter the e mail address of the administrator to be informed about system wide events 7 9 3 E mail from Address NCast Corporation Revision 2 2 Page 74 NCast NCast Presentation Recorder Reference Manual Enter the e mail address denoting the source of this email this unit Something like PR HD Room A105 myorganization com would instantly identify the source of the e mail 7 9 4 SMTP Serve
130. s if the password is compromised an attacker will still not gain access to the unit This field may contain WWW XXX Y Y Y ZZZ A single address WWW XXX y yy An address range WWW Xxx yyy 0 24 A subset of a network CIDR notation WWW XXX Yyy ZZZ sss ttt uuu vvv A comma separated list of addresses WWW XXX YYY ZZz Sss ttt uuu A comma separated list of addresses and ranges Standard CIDR notation is documented in IETF RFC 4632 7 6 4 Port For security reasons the default Telnet port is not utilized Enter a port number if the factory setting is not acceptable 7 7 SCHEDULER 7 7 1 Overview The PR HD Series Scheduler is a feature that allows the manager of one or more Presentation Recorders to schedule these appliances through use of a Google calendar or through use of industry standard iCalendar files The manager can start and stop each Presentation Recorder at a predetermined time load unique settings for each individual presentation send serial control commands to each Presentation Recorder to provide additional functionality and specify how and where the Presentation Recorder sends its output all without touching the actual Presentation Recorder user interface All that is required is one or more Presentation Recorders each with a connection to the Internet and access to a Google calendar or an iCalendar file no matter where in the world the equipment is located 7 7 2 Components of the Solution The Scheduler Implementation us
131. s to the network time servers is not available closed network or if the unit is being used in a temporary location with a standalone hub or router e g a tradeshow conference or demo Bootup time will be substantially reduced if the system does not wait for a response from non existent time servers 7 2 3 Manual Time setting To set the time manually if the unit is not on a network where time servers are reachable the first step is to Stop NTP A new set of buttons will appear one of which is labelled Set Date amp Time NCast Corporation Revision 2 2 Page 58 NCast NCast Presentation Recorder Reference Manual NCast Presentation Recorder Quick Start Channels Archives Configuration Status WOES yo Time Time zone America Los Angeles Set Date amp Time NTP server 1 0 pool ntp org Start NTP eS NTP server 2 1 pool ntp org NTP server 3 2 pool ntp org Apply Clicking on this button will bring up the manual time setting window Set Date amp Time O May 2014 o Su Mo Tu We Th Fr Sa 1 2 3 4 5 6 F 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 30 31 7 32 Set Cancel There will be some time offset with clock drift so if running manually the clock time needs to be rechecked on a periodic basis 7 3 NETWORK The Network Configuration page is used to set and report parameters related to the IP address of the unit and its behavior on an Internet n
132. sentation Recorder Reference Manual 9 Sources 9 1 VIDEO The Sources line on the Quick Start page controls what graphics video or audio inputs will be sent to the compression engines Video Sources Main input VGA DVI D DVI A HDMI DisplayPort Composite Main Full Swap PIP PIP input VGA DVI D DVI A HDMI DisplayPort SDI Composite PIP Full 9 1 1 Main input The user may select one of the following graphics video sources for capture as the primary image Graphics Video VGA DVI D DVI A HDMI Displayport SDI Composite RGB analog signals from the 15 pin VGA connector Digital RGB signals from the DVI connector Analog RGB signals from the DVI connector HDMI signals Displayport In 3G SDI serial digital NTSC or PAL video from the composite BNC connector The DVI input is compatible with the DVI 1 0 specification and the VESA DCC EDID 1 3 specification The required interface cable is a DVI D Single Link Digital or DVI I Combo Analog and Digital or DVI A Analog RGB A DVI D Dual Link cable is also acceptable The Main Full or PIP Full expands the image to fill the entire screen The Swap button is used during Picture in Picture PIP setups The Main and PIP inputs will be exchanged when the button is toggled For example if a video PIP was overlaying a graphics background pressing the Swap button will result in a graphics PIP overlaying a video scene
133. shed The recording will be removed after the archive has been transferred to its target location Actually the recording is not removed but is placed into the Trash Can where it remains until accumulated Trash exceeds the space allocated for it Trash is carried out at the time a new recording starts This means that generally a recording remains available for some time after Upload even though it has been officially removed See Section 7 10 3 for a discussion on disk space management There is an option to Remove Archives Automatically which will unconditionally delete recordings when space is needed See Section 7 10 6 for information on how to enable this option 5 11 4 Set Upload Method There are potentially five different target locations for a finished and ready file a server using File Transfer Protocol FTP a server using Secure File Transfer Protocol SFTP a locally inserted USB stick transfer to a Presentation Server using the Capture Agent REST protocol or transfer to a Kaltura server using the Kaltura API There is a Primary Upload choice and a Secondary Upload choice This allows the Presentation Recorder to target two different entities for delivery of the file For example the Primary choice could be set to USB and the secondary choice to Presentation Server This would allow the Presenter to walk away with the recording on a USB stick and a backup copy is sent to Presentation Server for processing there
134. sing results White screens white tablets or signs behind the podium will lead to backlighting of the speaker causing the exposure level on the speaker to go dark Remove any unneeded visual clutter behind the podium Ask the conference staff for a black curtain or sheet behind podium if there are whiteboards or bright white surfaces there Speakers often like to stand directly in front of the projection screen while making a point This leads to horrible backlight problems for the camera and a terrible recording Ask speakers not to stand in front of the screen The screen should not be anywhere in the framing of a video shot e Keep the video shots tight on the speaker The PIP format reduces the size and it s best to have as large a headshot as possible Video of half the room is neither visually pleasing nor does it convey the karma of the speaker e Mount the camera on a high tripod Waiters latecomers and other traffic right in front of the camera is very distracting to the video recording e Speakers invariably move around and it is unrealistic to not have an operator full time on the camera unless there is some sort of automatic tracking device being used 13 2 3 Capturing Sound Quality sound recording is probably one of the most important requirements for a decent presentation capture Viewers will find the presentation incomprehensible if the audio is soft distorted or noisy This is NCast Corporation Revision 2 2 Pa
135. size 12 5 REST INTERFACE GRAPHICS OVERLAY UPLOAD Overlay graphics used in presentations may be uploaded dynamically through use of an upload utility program When used in conjunction with a scheduler or serial interface command controller this leads to a powerful method to configure all aspects of a Presentation Recorder for a given Session It allows custom templates to be changed on an hourly basis for example You can upload a channel overlay with this command curl O digest u admin ncast F overlay_1_1_file test png http 192 168 0 100 rest files upload This will upload the first overlay on Channel 1 Option 0 is required because lighttpd is not handling HTTP 1 1 upload correctly NCast Corporation Revision 2 2 Page 100 NCast NCast Presentation Recorder Reference Manual 12 6 REST INTERFACE REFERENCE MANUAL All REST Interface calls are documented in the Presentation Recorder REST Interface Guide NCast Corporation Revision 2 2 Page 101 NCast NCast Presentation Recorder Reference Manual 13 Techniques for Presentation Capture 13 1 WEBCASTING PODCASTING AND ARCHIVING The new world of webcasting meetings and conferences recording presentations and running effective distance learning operations requires some thought planning and understanding of the objectives to be met for the operation This section discusses common problems in making an excellent presentation capture based on the ex
136. space allocated for the Overlay They are not scaled during Upload Transparency in the alpha channel is not implemented The information box Overlay n Left Top Width Height shows where the overlay will appear in the composition The 0 0 coordinate is the upper left corner of the screen Dimensions are in pixels Overlay 1 will be obscured by Overlay 2 and then Overlay 3 Overlay 4 is always on top The enable disable setting will cause the image to be included or not included in the composite media stream being created More than one image all four in fact may be included if required The Channel Table Image Overlays are transferred to the operating Session parameters at Session startup and thus initialize the image overlays used during the Session Once a Session has started modifications to these entries have no effect until the next Session start Changes to the Image Overlay s in use during a Session may be made from the Quick Start page Press the Upload button to upload the Overlays which have been selected 5 4 5 Text Overlays 1 4 NCast Corporation Revision 2 2 Page 31 NCast NCast Presentation Recorder Reference Manual Text Overlays are windows which contain text to be displayed on the frame The text can be inserted from fields on administration web pages Channel settings or can be sent via serial RS 232 or Serial Telnet IP commands See the Presentation Recorder Serial Interface Specification for details on
137. special circumstances the installer may wish to force the Ethernet hardware to assume a different configuration The link speed and full half duplex settings are adjusted through use of the pulldown menu tab 7 3 8 USB Stick Network Settings An alternative way to configure network parameters for the unit is to edit a special text file on a USB memory stick and to insert that memory stick into any USB slot in the unit during power on The operating software looks for the presence of a USB memory and searches for the presence of a specially named file If this file is found the network parameters are read from the file installed into unit and used during the network boot process Once the unit has booted the USB memory may be removed and is not required again The network settings from the file will be reflected as permanent entries shown on the Network Configuration page NCast Corporation Revision 2 2 Page 60 NCast NCast Presentation Recorder Reference Manual The file on the USB stick must be named ntwkconf txt and has the following lines of information dhcp bool 0 dns 1 string 8 8 8 8 dns _2 string 8 8 4 4 ethernet string auto gateway string 192 168 0 1 ipaddress string 192 168 0 2 netmask string 255 255 255 0 ntp boo1 1 The dhcp keyword accepts two values 0 which means disabled no dhcp use static addresses or 1 which means enabled use dhcp dynamic addresses The dns values identif
138. ssed and compressed NCast Corporation Revision 2 2 Page 17 NCast NCast Presentation Recorder Reference Manual If PIP mode is enabled two signals may be selected exceptions Composite and S video share one video decoding chip and are the same signal VGA and DVI A share one input chip and are the same signal 3 3 COMPRESSION The digitized RGB signals are converted in format from an R G B representation to Y U V Industry standard compression algorithms implemented in the DSP are then used to reduce the source data to a more manageable size and to generate sequences of I P B frames found in MPEG 4 media streams 3 4 TRANSMISSION The MPEG media stream is split into segments which are then encapsulated into RTP packets according to the protocol standards set forth in IETF RFC 3016 or RFC 3984 H 264 These packets are presented to the Ethernet hardware interface for subsequent transmission on the attached IP network 3 5 DECOMPRESSION The received packet stream is decompressed and the resulting image is placed into a video frame buffer At that instant it will become visible to the receiving viewers 3 6 DISPLAY FUNCTION The display will output imagery from two different sources If the unit is configured as the sending unit a local copy of the captured image prior to compression but after capture and conversion to digital format will be displayed If the unit is a receiving unit the displayed image will be fro
139. st NCast Presentation Recorder Reference Manual Sending PR HD i Presenter s PC A Presentation Server Client PC Saag Receive a Unicast or Multicast Stream In this mode of operation the Presentation Recorder is configured to receive a stream from another unit acting as a sender The receiving unit decodes and renders the composite image created by the sender and displays it on the attached monitor This configuration is frequently used to supply a display to an overflow room or satellite classrom Sending PR HD Presenter Receiving PR HD a NCast Corporation Revision 2 2 Page 16 NCast NCast Presentation Recorder Reference Manual 3 Theory of Operation 3 1 PRESENTATION RECORDER COMPONENT BLOCK DIAGRAM The Presentation Recorder consists of these main hardware functions Capture Hardware A custom designed high performance module is used to grab and digitize the RGB or video signals created by the presenter or media source This module accepts VGA Y Pr Pb DVI I HDMI PAL NTSC composite or PAL NTSC S Video connections and converts those signals to YUV digital format Two of these inputs may be active simultaneously for generation of a picture in picture PIP display Central CPU A general purpose ARM processor is used to compress and decompress audio streams to encapsulate and decapsulate outgoing and incoming packets streams to enable the web interface serial interface and telnet interfa
140. stream will be either a valid multicast address or the numeric host IP address of the remote unit if a point to point connection is being established For a discussion of multicast addresses see the discussion above Set Video Stream Destination Address All units in one session use the same multicast address The Video and Audio multicast addresses for a session can be the same if the Port numbers are different Units engaged in different sessions should use different multicast addresses to minimize traffic loading on the network the multicast routers distribute all traffic to all points subscribed on a particular multicast address independent of the port number If the network is not multicast enabled point to point communications between two Presentation Recorders is possible by entering the numeric IP address of the remote unit into this field 5 7 5 Set Audio Stream Destination Port The port number assigned to the audio media stream See the discussion above Set Video Stream Destination Port Number for more detailed information on ports 5 7 1 Set Audio Stream Destination MTU NCast Corporation Revision 2 2 Page 38 NCast NCast Presentation Recorder Reference Manual The Maximum Transmission Unit MTU is the maximum length of a packet and is normally set to 1500 For some special circuits satellite links others the maximum size may need to be adjusted downward to avoid packet fragmentation which leads
141. t TEXT text on given text overlay NCast Corporation Revision 2 2 Page 33 NCast NCast Presentation Recorder Reference Manual 5 5 Epir CHANNEL PROFILE 5 5 1 Set Video Quality Each channel can be assigned a video quality bit rate level Use the standard settings or choose Custom see the section below Edit Channel Profile O Set video quality 1 0 Mbps Set audio profile 44 kHz Mono 64 kbps Previous Next 5 5 2 Set Audio Profile This menu pulldown selects the bandwidth and encoding properties of the audio media stream associated with the graphics stream All audio is encoded in the Advanced Audio Coding AAC format Different bit rates and an optional stereo setting provide for a wide selection of audio formats to be associated with the graphics media stream Sample Rate Channels Bit Rate Quality Mono 16 kbps Phone Mono 32 kbps FM radio Mono 64 kbps CD Stereo 128 kbps Stereo CD If audio is not to be transmitted or recorded it may be disabled here as well If recording in Mono and using the Line input make sure that active audio is available on the LEFT channel 5 6 EDIT CHANNEL CUSTOMIZED PROFILE SETTINGS 5 6 1 Format Select the type of compression encoding desired The two choices MPEG 4 MPEG 4 Part 2 encoding original MPEG standard H 264 MPEG 4 Part 10 encoding latest industry standard Nearly all encoding currently done uses H 264 Choose this as the
142. t management system Special REST API s have been implemented to execute this upload So the first step in configuration is to go to the Configuration gt Presentation Server panel and enter the required credentials to access the server Once this has been entered and the function enabled the encoder will register with the server 7 8 2 Scheduling NCast Corporation Revision 2 2 Page 72 NCast NCast Presentation Recorder Reference Manual If the Presentation Server scheduler will not be used uncheck this box to save unneeded network activity 7 8 3 Server Port Enter the server address and access port 7 8 4 Use SSL Check if communications with the server is required to use SSL protocol 7 8 5 Capture Agent Name The unique name for this encoder to be used when registering with the server 7 8 6 Username The account name used by Capture Agents to log into the server Usually the system account 7 8 7 Password The password for the system account 7 8 8 Media Flavor The default tag flavor to use for the uploaded media 7 8 9 Serial command This entry specifies the serial command which will be used to start a Channel when a scheduled event is activated z me A NCast Presentation Recorder BES y Quick Start Channels Archives Configuration Status Presentation Server Scheduling 4 Connection Test Server ps ncast com View Schedule Port 80 Use SSL Capture agent name PR_HQ Username matterhom_syste
143. tation amp HD Video Set channel description High definition video PIP and XGA computer main window with 1 static graphics overlay Select channel scenario Send stream to RTMP server and record to file v Select media Video amp audio Do you want to auto start session on this channel Auto start recording on this channel Next As a specific example a Presentation Recorder might set up the following 3 channel assignments Channel 1 The PR HD unit transmits using multicast address 239 192 0 0 Channel 2 The PR HD unit receives using multicast address 239 192 0 0 Channel 3 The PR HD unit initiates an Automatic Unicast to the required CDN Enter a descriptive name for the channel that makes sense to the administrators or users 5 2 2 Select Channel Scenario The PR HD has eight basic modes of operation e Recording The unit is placed into record only mode No stream for internet use is generated This mode enables the highest quality capture at the highest frame rates e Streaming Send The unit will be transmitting in a one way one to many multicast only session to other units or remote desktops e Streaming Send with Recording The unit will be transmitting in a one way one to many multicast only session to other units or remote desktops Simultaneous recording is enabled e Streaming with RTMP The unit will utilize the services of a streaming server for rebroadcast reflection of the inc
144. tation Recorder sends an RTMP protocol stream to a streaming server CDN or Presentation Server where fanout occurs and the media is distributed to multiple receiving PC s or mobile devices The server MUST be located at a high bandwidth point on the network to provide for multiple outbound unicast streams one for each attached receiver Send a Stream to an RTMP Server and Record to File Supports live streaming using the RTMP streaming protocol and in addition simultaneously records to create a local archive See the diagram and description above Sending PR HD Presentation Server Client PC Send a Stream to an RTSP Server For live streaming the Presentation Recorder sends an RTSP protocol stream to a streaming server CDN or Presentation Server where fanout occurs and the media is distributed to multiple receiving PC s or mobile devices The server MUST be located at a high bandwidth point on the network to provide for multiple outbound unicast streams one for each attached receiver See diagram above The RTSP protocol has been displaced by RTMP for most content distribution networks Send a Stream to an RTSP Server and Record to File Supports live streaming using the RTSP streaming protocol and in addition simultaneously records to create a local archive See the diagram and description above The RTSP protocol has been displaced by RTMP for most content distribution networks NCast Corporation Revision 2 2 Page 15 NCa
145. that must be at least 8 characters in length 7 3 19 Privacy Password NCast Corporation Revision 2 2 Page 62 NCast NCast Presentation Recorder Reference Manual A private key is used to encrypt the data portion the message being sent The private key is generated from the privacy password that must be at least 8 characters in length 7 3 20 Slave Unit For capture or streaming of two hi def media streams a pair of encoders may be synchronized using a master slave relationship between the encoders One encoder is designated Master and the other responds as a Slave This setup window allows identification of the Slave unit to be controlled by this recorder Slave Unit Slave Unit 4 Address 192 168 10 1 Port 80 Protocol HTTP Connection Test Admin password Apply Close For additional information on use of this facility please refer to the Tech Tip NCast Dual Stream Recording 7 3 21 Remote Logging For centralized log management and to implement long term retention of the system logs of the recorders a Syslog server and port may be specified Remote Logging Remote Logging Y Address 192 168 10 1 Port 514 Apply Close This is a standard feature for Unix Linux based systems Contact your server administrator for more information 7 4 WEB The Web tab provides for security settings and selection of the type of HTTP protocol access to the encoder Also
146. the Admin and Coordinator passwords may be changed on this page NCast Presentation Recorder MOE y gt Quick Start Channels Archives Configuration Status Web Protocol HTTP Upload Certificate amp Private Key HTTP port 80 HTTPS port 443 Admin password ncast Coordinator password ncast Verify user password 9 NCast Corporation Revision 2 2 Page 63 NCast NCast Presentation Recorder Reference Manual 7 4 1 HTTP HTTPS Access Normal web access which is unprotected and insecure is accomplished through use of the HTTP protocol typically utilizing port 80 Secure access using HTTPS the SSL protocol utilizes port 443 Administration of the Presentation Recorder in open and insecure networks without the use of HTTPS presents a security risk and should be avoided The Web Control page allows three different options related to Viewer and Administrative access e All HTTP Utilizes HTTP for Viewer and Administrative access e Viewer HTTP Admin HTTPS Utilizes HTTPS for Administrative access e All HTTPS Viewers and Administrators must use HTTPS The downside of using HTTPS is that SSL Certificates which usually require an annual fee or license payment are required for each Presentation Recorder unit Non authoritative certificates may be used but Viewers will see ominous warning notices in their browsers about the certificate asking the user to accept the validity of the connection Also
147. the Channel parameters and the selected video and audio sources Once activated the View button allows reception of the transmitted stream using an appropriate media player NCast Corporation Revision 2 2 Page 22 NCast NCast Presentation Recorder Reference Manual View Stream x Launch Quicktime Player in full screen Launch Quicktime Player in window Download SDP file 4 5 RECORDING The Recording button starts the recording and archiving of the video graphics audio media being presented A recording may be Paused and Resumed and if Stopped and then Started a second file will be created Edit Title and Presenter Information a Title Channel 1 Presenter Presenter Description OK Cancel The Title button allows entry of metadata for the recorded file Title Presenter Description 4 6 STATUS BAR The Status Bar at the bottom of the page creates a real time report of the activity underway and has indicators for Streaming and Recording operations and the state of the selected Main and PIP input signals Session Sending Recording Input Output Main PIP par ppa DO P amp Vid Ofps Okb oe ve css Dove O Clicking the righthand grey panel collapses the Bar and hides it from view 4 7 CONTROL ICONS The upper righthand corner of the page contains two Control Icons wi lt NCast Corporation Revision 2 2 Page 23 NCast NCast Presentation Recorder Reference Manu
148. the fields year month day hours minutes seconds channel number filetype This default filename format may be altered to reflect more customized filenames through use of a formatting string utilizing any of the following codes Format String Function a Abbreviated weekday name for example Sun b Abbreviated month name for example Jan c 4 digit counter C 6 digit counter d Day of the month 01 to 31 H Hour 00 to 23 l Hour 01 to 12 m month 01 to 12 M minute 00 to 59 n Channel number 001 to 100 p AM or PM P am or pm S seconds 00 to 61 Y year For example if a Presentation Recorder user wishes to create a custom filename for the Accounting 101 series of lectures the following filename formatting string might be used Acct101 Y m d This will create filenames of the form Acct101 2007 11 19 mp4 Acct101 2007 11 21 mp4 Acct101 2007 11 23 mp4 Using this formatting notation the default value of the format string for standard archive filenames is this NCast Corporation Revision 2 2 Page 43 NCast NCast Presentation Recorder Reference Manual WY Y m d HY M S n The counter variables start at 0001 or 000001 and go to 9999 or 999999 Only one counter variable is permitted per filename The counter s next value is calculated by scanning existing archives which match the filename template The filenam
149. the video and graphics capture in progress without the need for an attached local output display Can be used to check on the current frame grab of the Presentation Recorder from a remote site NCast Corporation Revision 2 2 Page 86 NCast NCast Presentation Recorder Reference Manual 10 Viewer Interface and Media Players 10 1 VIEW STREAM The View Stream dialog box on the Quick Start page allows users at their desktops or laptops to launch client media players which will receive and decode the media streams for playback to the user View Stream Launch Quicktime Player in full screen Launch Quicktime Player in window Download SDP file For small organizations and departments this page will be sufficient for most uses However for larger organizations or for universities the functions of this page should probably be duplicated on the streaming media pages of the organization s website A discussion of how to achieve this is beyond the scope of this manual The various links on this page are used to launch client applications on the desktop In each case the link causes a small control file to be downloaded and this control file is passed to the appropriate client player The control file provides the client player with all the information required to find or request the media stream s and to decode the information contained therein Four different types of files are dynamically created by the links File N
150. these commands Edit Channel Text Overlay 1 o Font Size 20 Padding O ala Aho Presentation Recorder Bringing you power and knowledge through technology Cancel oK Also a text overlay may be a calendar time and date stamp to burn in the exact time a recording was done Text overlays can implement dynamically displayed text such a news tapes stock tickers closed captions and for other purposes such as changing the name of the speaker for a presentation due to a last minute change of presenters or participants The Channel Table Text Overlays are transferred to the operating Session parameters at Session startup and thus initialize the text overlays used during the Session Once a Session has started modifications to these entries have no effect until the next Session start The enable disable button will cause the text to be included or not included in the composite media stream being created More than one text window all four in fact may be included if required The information box Text overlay n Left Top Width Height shows where the overlay will appear in the composition The 0 0 coordinate is the upper left corner of the screen Dimensions are in pixels Overlay 1 will be obscured by Overlay 2 and then Overlay 3 Overlay 4 is always on top The Font Size may be specified in pixels The Padding specifies a minimum distance in pixels between the frame of a window and the text This option k
151. tion or reduced frame rates if a lot of down conversion is contemplated Keeping everything at the highest resolution and highest frame rates will be very costly in terms of video editing post processing NCast Corporation Revision 2 2 Page 56 NCast NCast Presentation Recorder Reference Manual 7 Configuration 7 1 PERSONAL The Unit Options page gives the Presentation Recorder its unique ID and provides a place to enter system wide settings The ID and contact information are transmitted over the Internet to identify this Presentation Recorder as a member of an ongoing conference session NCast Presentation Recorder Quick Start Channels Archives Configuration Status Personal Unit ID Presentation Recorder a Contact name Administrator Contact e mail info ncast com Contact phone 408 541 9230 Contact location Sunnyvale CA Contact web page http www ncast com Apply 7 1 1 Unit ID The Unit ID uniquely identifies a Presentation Recorder within a conference The Unit ID can be descriptive of the location of the unit or it can reflect the departmental ownership or any other characteristic that clearly differentiates it from its peers Examples PR HD West Campus PR HD Engineering The Unit ID is written to the XML meta data file which accompanies each recording and may be used to index the recorded file based on information about which unit sourced the recording 7 1 2 Contact Name
152. tivate the stream Click on the Streaming View button press Launch Quicktime Player in Window This dialog box allows you to connect different media desktop players using multicast protocol If your network is not multicast enabled you must be on the same LAN segment as the encoder Your client player should launch and you should see your captured graphics and video For other client players try clicking on the SDP link 9 You re done 2 1 3 Long Start Read this whole manual from cover to cover RTFM There are hundreds of different configuration options for a Presentation Recorder allowing the setup and composition of many different formats resolutions PIP options layouts bit rates frame rates start and stop and scheduling options and the like You can automatically upload your archives to a video server You can tag your archives automatically with course numbers and notes You can add your own customized graphic overlays to the captured graphics and video Transmission can be automated so that all that is required is to press the power on button Please feel free to contact NCast Corporation if you have any questions about the use or configuration of the Presentation Recorder NCast Corporation Revision 2 2 Page 13 NCast NCast Presentation Recorder Reference Manual 2 2 PRESENTATION RECORDER MODES OF OPERATION The Presentation Recorders have eight major modes of operation Record to File The Presentati
153. to inefficiencies and possible packet loss 5 7 2 Enable Video Bandwidth Smoothing If enabled the encoder smooths the stream transmission and sends packets at the prescribed target bit rate this is the default setting This will increase network jitter and latency If disabled the encoder uses burst transmission by sending all packets immediately after encoding This will significantly decrease network jitter and latency but depending on network connection it can cause packet loss and bottlenecks If burst network transmission is acceptable it is possible to disable this option to get extra low video latency This is a video encoder option it doesn t affect the decoder 5 7 3 Set Max Audio Frames in Packet Sets how many AAC frames can be sent in one packet The default value is 8 The valid range is from 1 to 10 Lower values result in lower network jitter and lower latency but higher network overhead each packet contains additional headers Set to 1 to achieve extra low audio latency This is an audio encoder option it doesn t affect the decoder 5 7 4 Set TTL The time to live defines the number of router hops that will be valid for a packet When the number of hops is exceeded the packet is discarded The minimum value for this field is 1 and a value of 127 or greater should be used for global transmission In some multicast networks TTL defines the scope or boundary conditions for containment of the multicast traffi
154. tothe Settings link upper right corner and click on it Select the Import Calendar tab and click on it Browse for the ics file on the PC and select it Choose the default or primary calendar for the account Click Import 6 Verify that the events have been properly imported and that all required fields are present m e w N This facility allows Presentation Recorder scheduling from almost any calendar application in use NCast Corporation Revision 2 2 Page 71 NCast NCast Presentation Recorder Reference Manual 7 7 11 Exporting Calendar Files Each calendar application should have an Export or Save command to create an ics file for backup or use by other applications To do this in Google Calendar 1 In the Calendars sidebar block on the left side click on the menu pop up for the primary calendar 2 Select Calendar settings 3 In the Private Address details click on the green ICAL button A pop up window should come up 4 Right click on the basic ics and do a Save as function in your browser saving the ics file to a known location in your PC If you simply click on the link your calendar application will probably come up and that is not the way to save the file It will however allow you to import the file into your calendar and look at the contents locally 7 7 12 Configuration These parameters control scheduler process G
155. udio not supported e DVI D Digital input DVI A Analog RGBHV input or Y Pb Pr component from a camera source e Displayport Input from the Displayport output of a computer e SDI 3G SDI Serial Digital Input e Composite NTSC or PAL input Note Conversion of HDMI or DVI signals to Displayport requires an active not passive adapter NCast Corporation Revision 2 2 Page 8 NCast NCast Presentation Recorder Reference Manual Backpanel for PR HD Extreme R PR HD Extreme D NCast Corporation Revision 2 2 Page 9 NCast NCast Presentation Recorder Reference Manual Backpanel for PR HD Ultra M PR HD Ultra P Backpanel for PR HD Ultra R PR HD Ultra D 1 7 PRESENTATION RECORDERS GENERATION 1 VS GENERATION 2 Earlier versions of the PR 720 and PR HD Presentation Recorders had a different backpanel and connector lineup Documentation on these first generation units is found in Chapter 14 1 8 PRESENTATION RECORDERS PHOENIX CONNECTOR WIRING The Presentation Recorder rack mount models come with a Phoenix balanced audio connector Hot Pin 2 Tip Cold Pin 3 Ring Gnd Shield Pin 1 Sleeve NCast Corporation Revision 2 2 Page 10 NCast NCast Presentation Recorder Reference Manual 1 9 PRESENTATION RECORDERS INSTALLATION The diagram below shows a typical room installation Touch Panel Room Projector Presentation PC RGBHV Y Pb Pr Local Display
156. ut required for media streaming The machine does not have enough processing power or memory to sustain continuous playback Some modern PC have a power saving mode and there have been instances where the machine goes into power save mode during playback crippling the capacity of the machine Other activities in the machine including hidden spyware or Trojans are consuming so much CPU time that the media player is unable to get the processing cycles required for correct playback Even some active web pages can consume nearly 100 of the CPU NCast Corporation Revision 2 2 Page 89 NCast NCast Presentation Recorder Reference Manual The audio devices set for the media player have not been configured correctly The audio has been muted 10 4 CLOSED CAPTION SUPPORT Section 508 of the Rehabilitation Act of 1973 is an amendment to a law requiring that electronic and IT technology provided by agencies of the Federal Government be accessible to both employees with disabilities and to members of the public with disabilities The Section 508 requirement has been adopted by a growing number of university and university systems including all California State University colleges Video and or multimedia products also fall under the standard by including requirements for captioning of multimedia products such as training or informal multimedia productions Captioning or video descriptors must be able to be turned on or off NCast s P
157. wnloaded from the web page or HTTP interface The srt format is very simple this example has two subtitles 1 00 00 20 000 gt 00 00 24 400 Subtitle 1 2 00 00 24 600 gt 00 00 27 800 Subtitle 2 The NCast Presentation Recorders support real time caption or sub title capture through use of serial commands which define timings and durations of sub title text See the Presentation Recorder Serial Interface Reference Manual for complete details 10 4 2 Sub titles using Quicktime and SMIL 1 http Awww calstate edu accessibility section508 section_508 FAQs shtml 2 http www section508 gov index cfm FuseAction Content amp ID 1 1 NCast Corporation Revision 2 2 Page 90 NCast NCast Presentation Recorder Reference Manual Receivers Decoders of the stream whether using a desktop player QuickTime Windows Media Player etc or a Presentation Recorder system must have the ability to turn on off the captioning features thus the term closed Unfortunately there is no fully standardized mechanism for captioning across these technologies Each media player handles captions differently QuickTime does not currently support industry standard closed caption such as ISMA QuickTime currently supports closed captioning by including a text track alongside audio and video content QuickTime currently supports two main methods of introducing captions through QT TXT and SMIL files This URL provides an overview of the QuickTi
158. y the domain name servers The ethernet keyword accepts these link level values auto 10fd 10hd 100fd 100hd 1000fd 1000hd auto negotiation 10 100 1000 Mbps Full or Half Duplex These values are case sensitive The other keywords require numeric IP addresses or netmasks as shown above The ntp parameter enables or disables network time protocol within the unit If enabled the Presentation Recorder must be on a network where access to public network time servers is available Disable ntp bool 0 this parameter if the unit is on a closed network Setting this parameter to O is useful when the Presentation Recorder is being used with a simple hub or switch Long bootup times will be shortened as the box is no longer searching for network time servers This file should be created edited with any simple ASCII text editor e g Notepad TextEdit Do not use an advanced word processing editor to alter this file Each key value pair must be on a separate line with no whitespace prior to the key and no blank lines in the file 7 3 9 IP Address Display When the unit boots the On Screen Display OSD will show the unit s IP address for about ten seconds If the OSD is enabled on the local loopback screen the current IP address of the unit will be shown with the meter continuously allowing verification of the unit s address 7 3 10 HTTP Proxy Software updates for the Presentation Recorder are achieved through use of HTTP
159. ystem during recording operations which require more disk space 6 1 6 Play Button The Play button allows an archive to be played directly and immediately on a PC or laptop No download is needed 6 1 7 Unfinished Tab Files which are not yet ready or are being processed are unfinished To reduce processing and archive not ready time uncheck the Hints track Optimize MP4 and Compatibility options on the recording tab 6 1 8 Uploads Tab A list of files uploading or waiting to be uploaded 6 1 9 Trash Can Tab Files which have been removed are placed into the system Trash Can If a file was removed or deleted in error opening the Trash Can permits recovery of the file provided the file was not permanently deleted in the quest for more recording space At the start of recording the system empties trashed files until the Trash Can size threshold is reached See Section 7 10 4 If the recording consumes all free space more archive files in the Trash Can will be permanently deleted until the disk becomes completely full 6 1 10 Editing Archive Files NCast Corporation Revision 2 2 Page 55 NCast NCast Presentation Recorder Reference Manual There are several tools which have been used to edit and manipulate MPEG 4 archive files Quicktime Pro Adobe Premiere Adobe After Effects Final Cut and Streamclip There may be and probably are other tools as well but these are known to work The words video editin

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