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QVAVC-HD Codec Manua..

1. 2004 2009 QVidium Technologies Inc All Rights Reserved Figure 3b Decoder profile ARQ Tab On the Network tab shown in Figure 3a enter the desired IP Transport type ARQ RTP or UDP Select ARQ to enable error correction ARQ uses RTP over UDP transport RTP adds statistics to the UDP header to help keep track of packet loss in the Status display UDP is most compatible with third party video encoders Enter the UDP port on which to receive IP video packets Enter a multicast address if receiving multicast packets otherwise leave this field blank You can also add an input Jitter Buffer specified in milliseconds to smooth variations in packet delay and fix packet ordering problems idium UBER fel System Decoder Profile License Encoder Decoder Press here for Hel Profile oa ARE Server QVidium Video Server settings Use Server CYes No IP Address or Hostname Echo Port Note Do not enable unless connecting to a Ovidium video server Transcode Management Network z 2004 2009 QVidiur Technologies Inc All Rights Reserved Figure 3c Decoder profile Server Tab Copyright 2009 2011 QVidium Technologies Inc Page 20 of 51 User s Manual v 23 QVidium H 264 HD Super Codec Two other parameters Video buffer size specified in milliseconds and Detect video break can help with the robustness of the decoder
2. Transcode Management Network Messages 2004 2009 QVidium Technologies Inc All Rights Reserved User s Manual v 23 QVidium H 264 HD Super Codec 12 3 Appendix C H 264 HD Super Codec Bitrate Limits Encode Bitrate Limits The video encoding bit rate limits specified below are subjective suggestions based on limited empirical testing The QVAVC HD codec will allow you to enter any video encoding bitrate and will attempt to produce the best video quality it can based on the video bit rate you set as an upper limit on the average peak bitrate Unless noted otherwise all bitrates below assume full NTSC 29 97 fps or PAL frame rates 25 fps Therefore the values here are only provided as a general guideline to help with estimating the expected network loading Maximum Video Encoding Bit Rates e 25 Mbps for UDP or RTP transport error correction disabled e 15 Mbps with ARQ error correction enabled Minimum Suggested Bit Rates for general content such as movies MPEG 2 Main Profile e 20 Mbps for Full video resolution 720x480 e 500 Kbps for CIF video resolution 352x240 e 250 Kbps for CIF video resolution at Half Frame Rate H 264 MPEG4 AVC High Profile e 4 8 Mbps for 10801 video resolution e 24 Mbps for 720p video resolution e 1 0 Mbps for Full SD video resolution 720x480 e 250 Kbps for CIF video resolution 352x240 e 125 Kbps for CIF video resolution at Half Frame Rate Note Video qu
3. M EI svetem namer avave a System Transcode Profile License Encoder a Decoder Transcode Profile Import Export Default Press here for Help ranscode Network In ARQ In Server Mode ASI to ASI v Video Bit Rate 2000000 Video Encoding H264 0 i Video Resolution 720x480 v Audio Encoding Pass Through MPEG4 Profile auto v MPEG4 Level auto iv Detect video break network input output no v Does not work for ASI output 2004 2010 QVidium Technologies Inc All Rights Reserved Start Status Monitor Clear Stats Show Log Clear Log Stop Management Network Figure 4a Transcoder Profile Transcode Tab Since the transcoder mode acts as a combination of a decoder coupled directly into an encoder you can configure most of the same parameters as with the decoder network input parameters ARQ parameters and optionally start the transcoder in Server Mode allowing the transcoder to initiate a stream from a remote source when you start the transcoder All these three configuration panels Network In ARQ In and Server are nearly identical to their corresponding configuration panels in the Decoder configuration profile Please refer to the Decode Section above and the Appendices below for more information regarding these settings Similarly the Network Out configuration panel shown below is nearly identical to the Network con
4. 12 Y C IN S Video input Note Serial number not shown is located above HDMI ports Important Safety Information e For PLUGGABLE EQUIPMENT the socket outlet shall be installed near the equipment and shall be easily accessible e CAUTION The QVAVC HD Codec contains an internal 3V Lithium battery RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE USE ONLY PANASONIC CR2032 20MM COIN TYPE BATTERY OR EQUIVALENT DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS Copyright 2009 2011 QVidium Technologies Inc Page 9 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 2 Encoder Configuration The encoder is configured and operated from the web browser This section explains how to configure the Codec s encoding parameters 2 1 Configuring the Encoder Overview 1 Enter http IPAddress where IPAddress is the IP address of the QVidium H 264 HD Super Codec The default address is http 192 168 1 23 2 Click on Profile under Encoder from the menu on the left The Encoder Profile interface should display in the main area to the right of the menu system as shown in Figure 1 3 Enter the destination IP address and UDP port number encode Video Bit Rate in bps and modify the other audio and video parameters such as Video Input and Audio Bitrate in Kbps to suit your needs as shown in Figure 1a and explained below 4 Press the Save button to save your chan
5. Technologies Inc Page 40 of 51 User s Manual v 23 QVidium H 264 HD Super Codec IP Transport This selects the type of video IP packet encapsulation and error correction used by the codec in generating a Video IP stream All packetized video transport mechanisms encapsulate a multiplexed variable bit rate MPEG 2 transport stream e ARQ uses QVidium s patented error correction mechanism based on a time constrained selective packet retransmission algorithm in place of FEC It also encapsulates the video as per COP3 2 without the FEC and RFC 2733 However it relies upon an upstream channel on UDP port 7020 e RTP disables all error correction mechanisms but still encapsulates the MPEG 2 multiplexed data according to RFC2733 e UDP is similar to the RTP transport above but does not add the RTP header to the UDP packets Instead it simply encapsulates the MPEG 2 transport stream data directly into the UDP IP packet payload Destination IP Address or Hostname This specifies the IP address or Hostname for the Video IP stream UDP Port This specifies the UDP port number P base 10 for the Video IP stream TS packets per IP packet This field allows specification of the number of 188 byte MPEG 2 Transport Stream packets per IP packet The standard MTU for Ethernet packets permits a maximum of 7 TS packets per IP packets which is the default ARQ The parameters below ONLY pertain to ARQ error correction They will be igno
6. autorun and not autorun txt 8 3 Resetting the Password If you lose the root password and cannot gain access to your codec there are two procedures for resetting the password The simplest is to go to the QVidium web site at http www qvidium com reset click on Reset Password same the resulting autorun file to a USB flash stick and simply insert that USB flash stick into the QVAVC HD codec The autorun program will automatically run resetting the password to the default root Alternatively and to change the password for web access you must first connect via the Console RS 232 serial port to a serial terminal or a PC running a serial terminal emulator such as TeraTerm or Hyperterm Use 57 600 Baud and 8 bit data No Parity 1 Stop bit 8 N 1 and no flow control You may need to use a Null modem cable since the QVAVC codec like a PC is a DCE Data Communications Equipment There is no login prompt Once connected you connect directly to a Borne shell Copyright 2009 2011 QVidium Technologies Inc Page 30 of 51 User s Manual v 23 QVidium H 264 HD Super Codec Now that you have access the console type passwd and follow the prompts to temporarily change the password Next please type rm flash qvidium httpd conf to remove the password from the web server configuration You can then type etc init d rc httpd restart to restart the web server with this new password 8 4 Re installing the Applic
7. usually between 5 and 10 Note Be aware that the user interface will not warn you if you try to enter a bit rate beyond the operating limits of the codec For more details on the range of MPEG encoding bit rates please see Appendix C Section 12 3 For more information on the various video parameters Frame Rate Encoding Format Resolution etc please see Appendix A Section 12 1 For SD video you can select either MPEG2 or MPEG4 AVC H 264 Video Encoding However for HD video it only encodes into H 264 video You cannot encode MPEG 2 for an HD video source Warning If you are using SDI or HD SDI input without embedded audio you MUST enable Analog audio input for HD Video in the Advanced Profile tab for the encoder to start Copyright 2009 2011 QVidium Technologies Inc Page 10 of 51 User s Manual v 23 QVidium H 264 HD Super Codec Qidium System Name ENCODER QVAVC System License YEncoder Encoder Profile Press here for Help Profile Import Export Default Start Volume Bitrate Status Monitor Clear Stats Diagnostics Show Log Clear Log Stop Encoding Video Input SDI vi Video Bit Rate 2000000 Video Encoding H264 Audio Bit Rate Audio Encoding MPEG Layer2 v Audio Sampling Rate os ee es vi for Composite and S Video Output input Device Network v Network IP Transport UDP vj Destination IP or Multicast 225222222 Address UDP
8. x 44 H e Unit Weight 2 25 Ibs 1 0 Kg e Rack mount bracket up to 2 units in 1 RU Environmental e Operating temperature 0 to 50 C e Operating humidity 0 to 90 R H non condensing e Non operating temperature 20 to 70 C e Non operating humidity 0 to 95 R H non condensing Regulatory e RoHS CE and FCC compliant Warranty Parts and labor 1 year Copyright 2009 2011 QVidium Technologies Inc QVidium H 264 HD Super Codec Page 49 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 12 6 Appendix F Product Warranty Terms and Conditions 1 Warranty Statement Thank you for purchasing a QVidium product All QVidium products come with a one year limited warranty against defects in material and workmanship during the warranty period If a product proves to be defective in material or workmanship during the warranty period QVidium will at its sole option repair or replace the product with a similar product Replacement Product or parts may include remanufactured or refurbished parts or components The replacement unit will be covered by the balance of the time remaining on the customer s original limited warranty QVidium provides no warranty for the third party software included with the product or installed by the customer QVidium does not warrant that the operation of any product will be interrupted or error free and QVidium is not responsible for damage arising from failure to following instructions
9. Buffer The IP packets of incoming video streams may lose their ordering or suffer variable delays during transport through an IP network If the value of the Jitter Buffer is non zero the QVidium QVAVC H 264IP Codec will process all incoming video IP packets through a time based buffer that removes variations in packet arrival times also known as packet jitter and reorders RTP encapsulated packets by their RTP sequence number The Jitter Buffer parameter specifies the size of this incoming packet buffer in milliseconds of delay and holds incoming packets for this amount of time before releasing them You can specify zero 0 here to disable this additional buffering when latency needs to be minimized This buffer can only exist in ARQ and RTP modes Video Buffer Size This value specified in milliseconds adjusts a buffer in the video decoder that helps prevent the decoder from running out of data and losing sync due to jitter or variability in the delivery of data to the decoder If you notice audio clicks or pauses or if the decoded video occasionally freezes or loses lip sync especially over long network distances increasing this value may help The default value should be 300ms but for operation over a WAN we would suggest increasing this value to 500ms or larger Increasing this value will increase overall latency so you should minimize this value to minimize latency Out of Order buffer When in ARQ mode the decoder includes an optiona
10. C lidium System Name ENCODER QVAVC gt System Decoder Profile License Encoder Press here for Help Decoder Profile Import Input Network Export Default Start Output PAL N Composite S Video No v Status COMME Newwork ARG Sener Screen Clear Stats IP Transport 1 UDP v Show Log Multicast Address 2 225222222 Clear Log UDP Port 1234 Stop Jitter ms 500 Video buffer size ms 1000 dicun Management Out Of Order Packets 3 0 Network Detect video break network input only yes v Detect video break limit 100 to 2000 ms 400 1 If set to ARQ the incoming bitrate must be less than 4Mbps 2 This is not the sender s IP address 3 Normally set to 0 Additional out of order buffering for ARQ and RTP only Save 2004 2010 QVidium Technologies Inc All Rights Reserved Figure 3a Decoder profile Network Tab User s Manual v 23 QVidium H 264 HD Super Codec Qvidium System Name QVAVC Siem Decoder Profile License Encoder Decoder Press here for Hel Profile Cr ae ARQ Port 1 7020 Mode Auto Manual Mode Parameters Number Retries b j Round Trip Time 100 auto Mode Parameters Target Latency ms 250 Max Burst Drop ms 2 jc Robust mode S We Transcode 1 Sends resend requests to receiver fi sri tdi 2 Burst Drop must be less than Target Latency Networ
11. Port 1234 ARQPot pw Decoder Transcode Management Network Save Cancel 2004 2010 QVidium Technologies Inc All Rights Reserved Figure 1a Basic Encoder Configuration 2 3 Configuring Packet Transport amp Error Correction The QVidium H 264 HD Super Codec features some of the most powerful and advanced error correction capabilities found in any video over IP product The QVidium H 264 HD Super Codec implements QVidium s patented ARQ error correction and clock synchronization US Patents 7 551 647 and 7 522 528 for the more robust video transmission with the lowest delay QVidium s ARQ Automatic Retransmission Request is a dynamically adjusting feedback error correction mechanism designed specifically to enable the highest quality video transport over wireless networks and the Internet ARQ senses packet loss at the receiver and requests replacement packets from the server ARQ can provide nearly flawless reproduction of a video stream even through extremely lossy or congested networks The QVidium H 264 HD Super Codec minimizes network bandwidth and loading due to its extremely efficient encoding and video transport The HD Super Codec implements MPEG4 AVC H 264 High Profile Levels 4 and 4 1 video encoding providing advanced coding techniques in hardware such as CABAC processing not normally found in other MPEGA codecs Our codec also features variable bit rate VBR t
12. a petias ginti 34 11 Troubleshooting amp Support essere 35 11 1 Troubleshooting Common Problems sss 35 A Agee 7 UDO I Tr Hr Tp 38 12 Appendlc8S ioa eua oa Ub Qu I EORR AU ATP QUT Aare 39 12 1 Appendix A Encoder Configuration Parameters sss 39 12 2 Appendix B Decoder Configuration Parameters 42 Copyright 2009 2011 QVidium Technologies Inc Page 2 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 12 3 Appendix C H 264 HD Super Codec Bitrate Limits 46 12 4 Appendix D Hints for Minimizing Bitrates sss 47 12 5 Appendix E Technical Specifications ee ccsceseeeeseeteeeeeeeteeseneeeeees 48 12 6 Appendix F Product Warranty Terms and Conditions 50 12 7 Appendix G FCC NOIlICG orreodic est erhebt ater sdut seco Piae dpern 51 Note This manual describes all the features and capabilities of the QVAVC H 264 HD Super Codec when all licenses have been installed In particular this includes the Digital I O HD Encoding and Transcoding licenses Various models may include some licenses but not others For example the model QVAVC ANALOG is sold as an SD codec and therefore does not include the Digital I O license For the QVAVC ANALOG HD encoding and decoding is disabled and the SDI and HDMI interfaces will not be avai
13. decode e ARQ uses QVidium s patented error correction mechanism for lost packet recovery ARQ encapsulates the video stream as a standard MPEG 2 Transport Stream as the payload of UDP packets with an RTP packet header as per RFC2733 It relies upon an upstream channel on UDP port 7020 e RTP mode decapsulates the MPEG 2 multiplexed data according to RFC2733 It will process the data through the de jitter buffer if set to a non zero value and the reorder buffer also if set to a non zero value but will not send out ARQ retransmission requests Because RTP headers include a timestamp and sequence numbing RTP protocol has the advantage of providing lost packet and other network statistics e UDP mode disables all error correction It expects raw UDP packets without an RTP header and expects to receive an MPEG 2 transport stream directly from the UDP payload Use this setting for interoperability with some Set Top Boxes Multicast Address This specifies the IP multicast address if any to listen to for the Video IP stream For receiving a unicast video IP stream leave this field blank UDP Port This specifies which UDP port number P base 10 to listen on for the Video IP stream Be certain to open also your firewall to port P 2 and P 4 for ProMPEG FEC P 2 for column parity and P 4 for row parity packets Copyright 2009 2011 QVidium Technologies Inc Page 42 of 51 User s Manual v 23 QVidium H 264 HD Super Codec Jitter
14. exceeds the Video Buffer Size Transcoding 1 2 3 4 Note ASI pass through does not work for IP input to ASI output in the current version Please contact support for a version that allows this feature to work Transcoding is limited to the first 2 audio channels others are discarded Closed Captioning and Tele text are not currently supported However subtitle pass through is supported for IP output ASI output does not currently pass through subtitles You can simultaneously run the encoder and decoder for full duplex operation when encoding and decoding SD video and when the encoder ARQ buffers are set to 1024 However you may have to restart the decoder if you restart the encoder QVidium does not warrant full duplex operation when encoding or decoding HD video Warning Running more than one of any of these operations at the same time may not work or may require restarting of one of the previously started functions QVidium does NOT warrant operation when starting more than one of the 3 modes of operation encoding decoding and transcoding at the same time when processing HD video or running multiple operations when there could be a conflict in resources such as decoding from ASI input while encoding from SDI input or transcoding from ASI input Versions 109 and greater disable running the encoder and decoder run simultaneously Under limited circumstances you can run the encoder and decoder simultaneously
15. external storage you must connect to a command line interface in one of 3 ways 1 through the RS 232 Console port 57 6 KBaud 8 N 1 No Flow Control Null Modem cable 2 Telnet port 23 or 3 SSH port 22 For telnet or ssh log in using username root The initial password is root but you can change this from the web GUI using the System Password menu 9 1 Mounting and Un mounting an External Storage Device When you connect a NTFS or FAT formatted external storage device to the USB interface the embedded Linux 2 6 Operating System will automatically mount the file system If you wish to connect a Linux formatted Filesystem such as ext2 or ext3 you will have to manually mount the file system The initial mount point is media sda1 From the command line interface first type cd media sda1 then use 1s for a listing of the files on the storage device Note the eSATA does not currently automount when you attach an external storage device So unless you are familiar with mounting filesystems in Linux we suggest that you use an external storage device with a USB interface instead However if you wish to remove a mounted storage device you must first unmount it To unmount the disk or storage device you must first stop any programs that are accessing the device then you must cd away from the mounted directory such as ca You can then issue the unmount command umount media sdal1 After this command successfully complet
16. is being received and decoded the Video Status page will show bitrate and other statistics related to the incoming video stream 4 3 Stopping and Reconfiguring the Decoder Enter http IPAddress where IPAddress is the IP address of the decoder 1 Ifthe Decoder menu is not shown select Decoder on the left side of the web page 2 Selectthe Stop menu option underneath the Decoder menu You should see the following message at the top of the web page main area Decoder is Stopped 4 4 Configuring Packet Transport amp Error Correction This section explains how to configure the video transport and error correction capabilities of the QVidium H 264 HD Super Codec and how to configure its decoder for proper operation of these error correction mechanisms Section 4 4 1 describes the configuration of the decoder s network transport and Section 4 4 2 describes the ARQ error correction mechanisms of the QVidium H 264 HD Super Codec 4 4 1 Configuring the Decoder s Network Transport Within the Network Parameters section of the decoder profile select among ARQ RTP or UDP packet transport Also specify the UDP port number The Multicast Address specifies the IP multicast address if any to listen to for the Video IP stream If expecting a unicast video IP Copyright 2009 2011 QVidium Technologies Inc Page 21 of 51 User s Manual v 23 QVidium H 264 HD Super Codec stream leave this field blank The decoder interprets the v
17. relating to the product s use 2 Warranty Conditions The warranty is valid only for the first consumer purchaser and is not transferable Proof of purchase will be required for any limited warranty The warranty does not cover 1 any product on which the serial number has been defaced modified or removed or 2 Damage deterioration or malfunction resulting from a Accident misuse neglect fire water lightning or other acts of nature unauthorized product modification or failure to follow instructions supplied with the product b Repair or attempted repair by anyone not authorized by QVidium c Damage to or loss of any programs data or removable storage media d Software or data loss occurring during repair or replacement e Any damage of the product due to shipment f Removal or installation of the product g Causes external to the product such as electric power fluctuations or failure h Use of supplies or parts not meeting QVidium s specifications i Normal wear and tear j Failure of owner to perform periodic product maintenance k which has been subjected to unusual physical or electrical stress misuse abuse power shortage or negligence or I Any other cause which does not relate to a product defect 3 Warranty Procedure For the duration of the warranty period QVidium will replace or repair defective products If a product is suspected of being defective the owner should contact the reseller or distributor that s
18. supports this Management capability Otherwise you need to enter the appropriate static IP settings Network LAN1 obtain an IP Address automatically DHCP LAN2 r use the following IP Address Mu Iticast e Config IP Address 192 168 1 23 ees Subnet mask 255 255 255 0 Status Default gateway 192 168 1 1 IP Address Ping Obtain DNS server address automatically DHCP oe r use the following DNS server addresses Preferred DNS server 192 168 1 1 Alternate DNS server 2004 2010 QVidium Technologies Inc All Rights Reserved 3 Change settings as desired and click Apply 4 If you change the IP address you will need to change the URL in the web browser to point to the new address after clicking on Apply The Network Configure panel allows you to modify the static IP address parameters and DNS server settings or to have these settings automatically configured through DHCP A Hostname panel allows you to specify the host name for use in conjunction with a DNS server to assign a predetermined IP address Note on Resetting IP Address In case you change the IP address or select DHCP and cannot determine the IP address you use the QVidium application CodecManager that you can download from the Downloads page of www qvidium com Alternatively you can connect the Console serial port to log into the Linux shell and change the IP address or other settings To reset the IP settings connect a P
19. the replacement packets ARQ shares similarities with robust packet transport protocols such as TCP IP in that both use feedback to create robust network packet transport However TCP IP uses a sliding window that limits the number of packets that a source can have in transit and requires a positive acknowledgement for each window of packets This limits TCP s throughput especially over links with long latencies Furthermore under heavy loss conditions TCP IP scales back the data transmission rates and provides no concise deadlines or constraints on packet delivery times For real time video this limits the usefulness of TCP IP and makes it unacceptable for live low latency video transport In contrast with TCP IP QVidium designed its patented ARQ error correction specifically for live interactive real time video and audio signals to automatically recover nearly all lost packets with minimal latency and over nearly any link loss conditions It adds a small configurable amount of delay to the network transport in exchange for significantly improving the robustness and reliability of video transport This section explains how to configure the video transport capabilities of the QVidium H 264 HD Super Codec and how to enable ARQ error correction 2 3 14 Configuring Video over IP Network Parameters To configure the IP network parameters within the Network Parameters section of the encoder profile select among RTSP ARQ RTP or UDP pac
20. to insure that the decoder never runs out of video or audio data despite variations in CPU processing and packet arrival times Copyright 2009 2011 QVidium Technologies Inc Page 22 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 4 4 2 ARQ Automatic Retransmission Request Automatic Retransmission Request ARQ tries to recover any packets lost during transport to the decoder by adding a small amount of delay at the decoder during which time the decoder would have time to detect and request any missing packets The size of this delay should also include adequate time for the missing packet to be received and inserted into the play out queue so that the video stream can continue to flow smoothly and unimpeded to the MPEG decoder To enable ARQ you must first select ARQ transport from the Profile dialog Also ARQ transport must be enabled at the encoder With ARQ selected and the decoder started the decoder will watch for gaps in the RTP sequence numbers from the output of the jitter buffer When it detects missing packets it sends retransmission requests to the encoder so that the encoder can quickly resend any missing packets Incoming retransmitted ARQ packets bypass the network de jitter queue and find their correct place in the ARQ buffer so that by the time packet are output by the ARQ buffer the output of the ARQ buffer should no longer contain any missing packets ARQ has three parameters that can be configured in ma
21. video D 1 resolution is 720x480 pixels for NTSC resolution 450i and 720x576 pixels for PAL video format 576i This is the resolution commonly used for DVDs and Standard Definition broadcasting When you need to encode the video at lower bitrates the H 264 HD Super Codec M allows you to select lower CIF resolution 352x240 for NTSC and 352x288 for PAL Video Aspect Ratio 4 3 or 16 9 Standard Definition NTSC video has a 4 3 aspect ratio This is the default setting However many new HD Camcorders and video mixing equipment have NTSC composite outputs Setting the Aspect Ratio to 16 9 sets bits in the MPEG elementary stream that tell an MPEG decoder to decode the incoming video stream with this aspect ratio However it does not change the encoding resolution Video Input This selects between SDI HDMI S Video and composite video inputs The H 264 HD Super Codec M uses embedded digital audio from the SDI and HDMI inputs when you select the SDI or HDMI video input unless you select Analog audio input for HD video Low Delay This mode minimizes internal buffering to reduce the end to end delay encoder to decoder to less than 600 ms Video Filtering You can select this feature to add a special filter to the input video that helps reduce noise and thereby improve compression efficiency as well as clean up the picture Network Parameters The fields below relate to Ethernet IP video transport settings Copyright 2009 2011 QVidium
22. with unsurpassed video transport quality and state of the art video compression for minimizing bandwidth 1 2 Network Setup The H 264 HD Super Codec comes with a factory preset IP address of 192 168 1 23 and Netmask of 255 255 255 0 You can download and run our CodecManager application to determine or change the IP settings even when the IP address has been reset to an unknown address Please refer to Section 8 of this manual for configuration using the CodecManager application The H 264 HD Super Codec can also be reconfigured through a web browser when you know the IP address Follow the steps below to reconfigure the network settings through a web browser on a computer connected to the same subnet as the Codec 1 Point your web browser to http 192 168 1 23 NOTE The H 264 HD Super Codec requires user authentication to enter the web browser or to log in using Telnet The factory preset username is root and the password is also root Please enter these settings when prompted to access the system 2 Click on Configure under the Network menu on the left Copyright 2009 2011 QVidium Technologies Inc Page 4 of 51 User s Manual v 23 QVidium H 264 HD Super Codec You should see a web page similar to the following network configuration web page System Name QVAVC System License Encoder Configure LAN 1 Decoder Transcode You can get IP settings assigned automatically if your network
23. AL N standard generally used in South America instead of the more common PAL M default PAL standard Capture Closed Caption CC For MPEG2 SD video only setting this to Yes will allow the encoder to pass certain data on Line 21 into the video stream However even when enabled the QVAVC may not produce compatible Closed Captioned video even for SD MPEG2 video It has only been tested to work with VLC We recommend disabling this option Copyright 2009 2011 QVidium Technologies Inc Page 13 of 51 User s Manual v 23 QVidium H 264 HD Super Codec System Name ENCODER QVAVC System Encoder Profile License Encoder Profile Import Export Default Press here for Help Advanced Encoding X Contro PAL N No Lal Error Handling Restat ne Low Low Delay a Analog audio input EEl No is HD Video video Frame Rate er Ful ie video Resolution Fur v video Aspect Ratio 4 43 v Number P frames auto w Number B frames ac v MPEG4 Profile auto MPEG4 Level auo Start Volume Bitrate Status Monitor Clear Stats Diagnostics PMT PID cmm je PID Audio PID Zo PCR PID E usually Video PID Network rs pkts IP pkt ETA Network aie LAN1 Bond ARQ Buffers m Show Log Clear Log Stop Decoder gt Transcode Management Network li 2004 2010 QVidium Tech
24. C running a terminal emulator such we Hyperterm or TeraTerm at 57 600 Baud 8 N 1 no flow control and type ifconfig ethO lt IP address gt where lt IP address gt is replaced by the desired IP address for example ifconfig ethO 192 168 1 23 Alternatively upon power up the Codec will emit a gratuitous ARP packet from which you can determine its IP address by using a packet snifter or network monitor such as Wireshark from www wireshark org Or go to http www qvidium com reset copy the autorun file on a USB flash and plug flash into QVAVC HD This will reset all IP network settings File must be autorun and not autorun txt Copyright 2009 2011 QVidium Technologies Inc Page 5 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 1 3 Ping Selecting Ping allows you to test network connectivity by sending ping packets to an address or hostname you specify However to use a hostname in place of an IP address you must have configured at least one DNS server Qdidium System Name QVAVC System Ping remote host License Ld zie 0 Ld Decoder gt Transcode Management Network LAN1 LAN2 Multicast Ping Config System Name QVAVC System Ping results License Encoder PING qvidium com 69 5 14 25 56 data bytes Decoder 64 bytes from 69 5 14 25 seq 0 ttl 51 time 70 0 ms Transcode 64 bytes from 69 5 14 25 seg i ttl 51 time 70 0 ms Man
25. Copyright 2009 2011 QVidium Technologies Inc Page 35 of 51 User s Manual v 23 QVidium H 264 HD Super Codec HDMI input make certain that the video source is HD and is not encrypted Make certain that you Saved the profile and afterwards hit the Start menu item 2 Make certain that device is powered on and connected to your network 3 Check that green LAN light in front is lit and link light at RJ 45 port is on 4 Make certain that you have entered the correct IP address for the destination under Encoder Profile and the correct gateway under Network Configure if the receiver is on another subnet 5 Try pinging the destination system clicking on Network Ping and entering the IP address for the decoder device Encoder does not start or is not outputting any packets 1 Check the Encoder Status page to see whether the bitrate is non zero 2 If the bitrate is zero then check for a valid video input 3 If you have a valid video input then check Encoder Show Log to see whether there are any errors 4 If the log says Video not LOCKED waiting for valid input and you are feeding an SDI input then check whether there is embedded audio on the SDI feed If not then under the Encoder Profile Advanced tab please check the checkbox called Analog audio input for HD Video and restart the encoder to see whether that fixes the problem The codec requires an audio signal to lock onto before it can start encoding 5 If yo
26. Delay Yes Video Encoding H264 Video Filtering On Audio Bit Rate 64000 Video Frame Rate Half Audio Encoding MPEG1 Layer2 Video Resolution CIF Audio Sampling Rate 32000 Copyright 2009 2011 QVidium Technologies Inc Page 47 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 12 5 Appendix E Technical Specifications Specifications Network Interface e 2 IEEE 802 3 100 10 Base TX Ethernet RJ 45 IP Network Stream Conditioning amp Error Correction EC e QVidium patented ARQ error correction e QVidium packet pacing optional Network Protocols e P Encapsulation RTP UDP IP and UDP IP e ETF DiffServ and IEEE TOS compliance e IGMP v 2 Multicast SNMP v 2 traps e DHCP Audio Video Interfaces e 1 SMPTE 259M 292M SDI DVB ASI video input BNC connector 1 SMPTE 259M 292M SDI DVB ASI video output BNC connector SMPTE 272M ABC SDI embedded 2 ch AES audio 1 HDMI Input 1 HDMI Output 1 S Video Y C video input 4 pin mini DIN connector 1 Composite video input BNC connector 1 Unbalanced left amp right stereo audio input Mini phono connector 1 Composite video output BNC connector 1 Unbalanced left amp right stereo audio output Mini phono connector Transport Stream Bitrate Audio amp Video e 160 Kbps to 19 0 Mbps encode or transcode Audio e MPEG 1 Layer Il audio encoding ISO IEC 11172 3 Layer 2 standards compliant MPEG2 and MPEG4 AAC audio encoding Stereo bit rates 56 64 128 192 256 am
27. From this application you can double click on a Codec to launch a browser window to that Codec In addition CodecManager makes it simple to change the IP Address launch a Telnet window or edit other settings of any Codec it detects directly from the CodecManager application even if several codecs are mis configured with the same IP address You can also instantly stop all codecs by the simple click of a button We encourage you to download and use the CodecManager application to manage your QVidium products since it is easier more convenient and less intrusive than resetting the Codec through the console 8 2 Resetting the Network Parameters If you cannot determine the IP address using CodecManager you have two other alternative methods of resetting the IP address either through the Console RS 232 port or with a USB flash memory stick Console Port Method You can connect the Console serial port to log into the Linux shell and change the IP address or other settings To reset the IP settings connect a PC running a terminal emulator such we Hyperterm or TeraTerm at 57 600 Baud 8 N 1 no flow control and type ifconfig ethO IP address gt where IP address is replaced by the desired IP address for example ifconfig ethO 192 168 1 23 USB Flash Stick Method Go to http www qvidium com reset copy the autorun file on a USB flash and plug flash into QVAVC HD This will reset all IP network settings File must be
28. ITRATE 500000000 VIDEO BITRATE 25000000 3 3 2 Command line Control The program qvidium qvctrl allows you to communicate with the encoder via a command line interface such as telnet ssh or the RS 232 Console port The first argument is always dev qvencode The second argument is get_videobitrate or set_videobitrate xxxxxx where xxxxxx is the bitrate would want to set max bitrate is 25000000 The command always returns VIDEO BITRATEzxxxxxxx where xxxxxx is the current bitrate Here are examples qvavc qvidium com qvidium qvctrl dev qvencode get videobitrate VIDEO BITRATE 4000000 qvavc qvidium com qvidium qvctrl dev qvencode set videobitrate 2000000 VIDEO BITRATE 2000000 qvavc qvidium com qvidium qvctrl dev qvencode set videobitrate 8000000 VIDEO BITRATE 8000000 Copyright 2009 2011 QVidium Technologies Inc Page 17 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 3 4 Configuring the Encoder for RTSP and Server Mode After clicking on Start under the Encoder menu the configuration we had described in section 2 1 will immediately begin to send out a continuous video stream of UDP IP packets optionally encapsulated with RTP headers to the destination address However the QVAVC HD also has two alternate modes of operation that allows a remote Decoder such as another QVAVC HD code an Amino Set top box configured with QVidium software or the QVidium StreamViewer application to in
29. P Device CLAN 1 CLAN2 Network Method v1 Trap v2c Trap Send Traps C Yes No Change trap configuration fe 20042009 QVidium Technologies Inc All Rights Reserved Figure 6 SNMP Trap Configuration For the encoder with traps enabled an SNMP trap notification will be sent when the video input loses or has no signal It will also send a trap when the video input has been restored For the decoder with traps enabled an SNMP trap notification will be send under any of the following events The decoder detects that the incoming video packet stream has lost a packet The network input has been disconnected or has no signal The network input connection has been restored A packet has not been recovered by the ARQ error correction when ARQ is enabled For mode details please see the MIB files Copyright 2009 2011 QVidium Technologies Inc Page 29 of 51 User s Manual v 23 QVidium H 264 HD Super Codec Codec Manager amp System Resets 8 1 Codec Manager QVidium supplies an application we call CodecManager as a free download for its customers under the Downloads section of the QVidium web site at http Awww qvidium com CodecManager will detect any H 264 HD Super Codec s and MPEG2 4 SDI Codecs connected through Layer 2 switches over the local area network At launch CodecManager sends a Layer 2 MAC broadcast to which the QVidium products respond with their MAC address IP Address and name
30. PEG 1 Layer II encoding MPEG2 AAC or MPEG4 AAC audio encoding For minimizing the audio bitrate we provide the option of setting the number of audio channels to I and the audio bitrate to 16 Kbps or 32 Kbps Do not use an audio bitrate less than 64 Kbps unless you set the number of audio channels to 1 Even then setting the number of audio channels to 1 has the potential to cause unexpected halting of the encoder So please be aware that this option may impact the reliability of the encoder Audio Sampling Rate Hz The audio sampling rate specifies the clock rate for capturing and digitizing the incoming analog audio signal Because of anti aliasing filtering the maximum audio frequency that can be digitized is limited to a frequency of about 1 3 to 1 2 of the audio sampling rate Internal anti aliasing filters severely attenuate audio signals above a frequency of about 1 3 of the sampling rate Thus for a standard music CD rate of 44 1 KHz the maximum audio frequency that the encoder can pass is about 14 7 KHz The valid selectable audio sampling clock rates are 32 KHz 44 1 KHz and 48 KHz SDI formatting requires that the audio sampling rate be fixed at 48 KHz so the current user interface disables setting this value SD Only Video Frame Rate Full Frame Rate and fractions thereof Select Full Frame Rate for normal video This will encode the video signal at 29 97 frames per Copyright 2009 2011 QVidium Technologies Inc Page 39
31. QVidium TECHNOLOGIES INC H 264 HD Super Codec Models ZQVAVC HD QVAVC HD LITE and QVAVC ANALOG User s Manual v 23 January 25 2011 Application Firmware Version 116 2009 2011 QVidium Technologies Inc 12989 Chaparral Ridge Road San Diego CA 92130 Phone 858 792 6407 Fax 858 792 9131 User s Manual v 23 QVidium H 264 HD Super Codec Table of Contents LEM introduction osc cr 4 WES OUVOIVIGW ceci d ted tR cs dada Eo M dE 4 1 2 INBIWOICSPIUDs qs Nc Diu repa EN uo tub os eae 4 1 9 t XPIBO usado botes dod ese Pr eut Lo peo tud abi pe ica cosas Nd cent ed 6 1 4 Passwords and Security sod ondas cte tat aeons 7 E MM 210 11 9 6 RE EORR UO CH PU EET 7 ASG System VIEW aAa a eaa Eaa gto AN EE 8 2 Encoder Configuration sse 10 2 1 Configuring the Encoder Overview sese 10 2 2 Basic Encoding GOortiquraliori uocauit ztep s aera apio ee taa dseecrs 10 2 3 Configuring Packet Transport amp Error Correction sssse 11 2 4 Advanced Video Encoding Configuration sss 13 9 Encoder Operation sz oce tube che Noes ele Ie 16 3 1 Starting and Stopping the Encoder utc tee iio a eia p ERR ee tg 16 3 2 Adjusting Encoder Audio Levels sese 16 3 3 Dynamically Changing the Video Encoding Bitrate 17 3 4 Configuring the Encoder for RTSP and Se
32. RQ transport must also be enabled at the decoder With ARQ selected and the encoder started the encoder will begin to save outgoing packets for later retransmission when necessary You must also be certain to configure any firewalls to allow the ARQ retransmission request packets through The default port for these upstream ARQ request packets is UDP port 7020 although you can configure this to any other valid non conflicting UDP port However if you choose to change the ARQ request port you must make certain the settings at the encoder and decoder match At the receiver the ARQ error correction mechanism first buffers incoming packets in a synchronized network de jitter buffer that maintains a constant configurable delay for incoming packets The de jitter buffer processes RTP sequence numbers and reorders packets as necessary to restore proper packet sequence and to buffer against erratic network delays Its goal is to output a smooth consistent flow of packets with increasing sequence numbers This output feeds the ARQ error correction mechanism The ARQ unit at the receiver watches for gaps in RTP sequence number from the de jitter buffer output and immediately sends out retransmission requests when necessary Incoming retransmitted ARQ packets bypass the de jitter queue and find their correct place in the ARQ buffer so that by the time packet are output by the ARQ buffer the ARQ error correction mechanism should no longer contain any miss
33. after clicking on Start the decoder sends out a series of packets upstream to the encoder to measure the round trip time and automatically set the number of retries and round trip time parameters based on the Target Latency parameter The results of these measurements can be seen in the Copyright 2009 2011 QVidium Technologies Inc Page 43 of 51 User s Manual v 23 QVidium H 264 HD Super Codec decoder s log file by clicking on Show Log and scrolling towards the bottom of the log file Clicking on Status will show the resulting value of these parameter based on the measurements seen in the log file In Manual mode the codec uses the Number Retriesand Round Trip Time parameters to create an ARQ buffer with the ARQ delay Number Retries Round Trip Time In Manual mode the decoder s ARQ mechanism ignores the Target Latency parameter and does not take any upstream link measurements Target Latency QVidium s ARQ error correction operates through the addition of a small additional buffering delay to provide enough time to request and receive replacement for each lost packet Target Latency gives the ARQ mechanism a target value for determining the necessary ARQ delay The ARQ divides the Target Latency specified in milliseconds by the round trip time to the video encoding source to determine the number of request attempts Unless Robust Mode is enabled it sets a minimum ARQ latency of one round trip time A larger Target La
34. agement 64 bytes from 69 5 14 25 seq 2 ttl 51 time 70 0 ms Network LAN1 qvidium com ping statistics LAN2 3 packets transmitted 3 packets received 0 packet loss Multicast round trip min avg max 70 0 70 0 70 0 ms Ping Config Hostname Status IP Address Ping Traceroute Copyright 2009 2011 QVidium Technologies Inc Page 6 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 1 4 Passwords and Security The QVidium H 264 HD Super Codec requires a username and password to protect access to its configuration settings This includes both Web access and Telnet access The default user name is root and the default password is also initially set to root You can change the password by selecting the Password menu item under the System Menu at the upper left of the Web page Note on Resetting Password If you lose the password and need to reset it you can go to http www qvidium com reset click on Reset Password copy the autorun file onto a USB flash and plug flash into QVAVC HD This will reset the root password back to root File must be saved as autorun and not autorun txt You must have physical access to the USB ports on the QVAVC HD to use this procedure 1 5 Updating QVidium provides firmware updates from time to time to add new features overcome limitations or to fix bugs You can find these new update packages on the QVidium Web Site under Support or by going t
35. ality is content dependent and the minimum bitrates suggested above may not produce acceptable video for any given application As a general rule we suggest that you use H 264 encoding for best video quality and adjust the bitrate based on your own observations to suit your needs Decode Bitrate Limits Bitrate limits related to receiving MPEG 2 Transport Stream video from the network Maximum MPEG 2 TS bitrates MPEG 2 or H 264 15 Mbps for UDP and RTP input transport 4 5 Mbps for ARQ Minimum MPEG 2 TS bitrates MPEG 2 or H 264 Mbps Lower input bitrates can produce decoder instability Copyright 2009 2011 QVidium Technologies Inc Page 46 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 12 4 Appendix D Hints for Minimizing Bitrates Audio Notes To minimize wasted audio overhead and minimize audio bitrates you should set one of the following 1 Set the Audio Bitrate to 56 Kbps and the Sample Rate to 48 KHz Encoding MUST be AAC results in 63 Kbps or 2 Setthe Audio Bitrate to 64 Kbps and the Sample Rate to 32 KHz Any audio encoding results in 84 Kbps At low bitrates we have found that MPEG1 Layer2 Audio Encoding sounds best Note setting MPEG1 Layer2 to 56 Kbps results in a total of 126 Kbps audio overhead Low Bitrate Encoder Settings On the Encoder menu 1 Click on Default to reset the Encoder Profile 2 Then set the following On basic tab On Advanced tab Video Bit Rate 200000 Low
36. ation Software If for some reason the QVAVC HD codec becomes completely unresponsive or you suspect that as a result of a failed update procedure the application memory had somehow become corrupted you can completely reinstall the application software with the following procedure The Linux Kernel is loaded into a separate area of memory and is unlikely to become corrupted so if the system does not respond to this procedure you may have a hardware problem and you should consult a QVidium technical expert Application Memory Reload Procedure 1 Go to http www qvidium com qvavc and download and save the qvavc XX pkg file to a USB flash stick This file is about 9 Mbytes XX is the version number of the application software 2 Goto http www qvidium com reset click on Reset Software and download and save the resulting autorun file to the same USB flash stick 3 Insert the flash stick and wait about one minute Then power cycle the codec Copyright 2009 2011 QVidium Technologies Inc Page 31 of 51 User s Manual v 23 QVidium H 264 HD Super Codec Encoding amp Decoding to from Files The QVAVC HD codec has both USB and eSATA external SATA interfaces that allow you to connect a USB Flash stick or an external disk drive or other external memory device to the codec You can encode a video stream directly to a file on this storage device and you can also play back a saved file from this external storage device To access
37. cable and connecting the QVAVC codec directly to the PC If CodecManager still does not appear to find the QVAVC Codec even after selecting the correct Network Interface if not grayed out and clicking on the Discover button and you are certain that the switch passes Ethernet broadcast packets then try the other LAN port By default the QVAVC codec will output broadcast Ethernet packets back to CodecManager on LAN1 However these multicast discover packets may go out on LAN2 if selected as the multicast interface Open a shell window On Windows select Start Run and type cmd Clear the ARP cache by typing arp d and hit Enter Try pinging the system by typing ping 192 168 1 23 CoN Oo O If all else fails you can reset the network settings by going to http www qvidium com reset Then copy the file autorun to a USB flash stick and plugging it into your codec The autorun file must be saved directly not first converted to a text file It should not be saved as autorun txt On Internet Explorer use the Save Target As command and select All Files for the File Type Then plug the flash stick into the QVAVC HD It will then reset all the network settings back to the defaults 192 168 1 23 Cannot get encoder to send IP packets 1 Check that a valid video signal is connected to the video Input you have configured Use the Encoder Profile page to select among SDI HDMI Composite and S Video If using
38. cators 1 4 5 6 7 8 All indicator lights either glow green or are off Ref Indicator Description 1 SDI Glows green with active SD SDI or HD SDI input 2 ASI Indicates valid DVB ASI input signal 3 HDMI On when video input is a valid HDMI signal 4 Power Glows green when the power is connected and unit is on Ref Port Description 5 USB 2 USB 2 0 Ports external storage or networking interfaces 6 Console RS 232 Console Interface via DB 9 Connector 7 LAN LAN1 and LAN2 10 100 Base TX Ethernet Ports 8 eSATA External SATA Port for External Video Storage Copyright 2009 2011 QVidium Technologies Inc Page 8 of 51 User s Manual v 23 QVidium H 264 HD Super Codec Rear View Video and Audio I O Connectors amp RS 232 Port Made in USA Connectors are listed left to right top to bottom Ref Component Description 1_AC Power Auto sense AC power input 100 240 VAC 250 150 mA 50 60 Hz 2 RS 232 DB 9 RS 232 connector for future expansion 3 HD HD Indicates SDI Input is High Definition 4 Error Error indicates bit or format errors on SDI ASI input 5 SDI ASI Input SD SDI HD SDI amp DVB ASI video input with embedded audio 6 SDI ASI Output SD SDI HD SDI 7 DVB ASI video output with embedded audio 7 HDMIIN HDMI HD Input 8 Reset Master hardware reset 9 HDMI OUT HDMI HD Output 10 Audio Analog audio L R stereo inputs and outputs 11 CVBS Composite PAL or NTSC video input and output
39. dium H 264 HD Super Codec I 2 Appendices 12 1 Appendix A Encoder Configuration Parameters This section explains the parameters related to the analog input signals and encoding settings and how they relate to the operation of the encoder and error correction and network transport setup Video Encoding Bit Rate Total peak stream bit rate for Variable Bit Rate VBR video encoding The resulting transport stream bit rate is the sum of the bit rates of the video program audio program and program stream information The video bit rate is specified in bits per second and can range from 128 Kbps for CIF resolution to 19 Mbps for 720x480 NTSC or 720x576 PAL standard definition resolutions or can range from 4 Mbps to 19 Mbps for high definition video resolutions The higher the bit rate the better the video quality Audio Bit Rate compressed The audio bit rate determines encoding audio quality and allows you to trade off audio throughput for quality The audio bit rate can be set to one of 64 000 128 000 192 000 256 000 or 384 000 bits per second Increasing the audio bitrate up to a maximum value of 384 Kbps increases the audio fidelity Regardless of the audio signal level on either channel selecting an audio bitrate of 64 Kbps or higher will always force the encoder to send 2 channels of audio stereo audio Each audio channel uses one half of the selected audio bitrate The H 264 HD Super Codec encodes audio using either M
40. e 32 of 51 User s Manual v 23 QVidium H 264 HD Super Codec qvidium qvplayer I sdi O fil o test mp4 m mp4 The output video can be saved either as an MPEG 2 Transport Stream TS which is the default or as an MP4 Apple Quicktime output format The m option in this example specified the MP4 format but you can simply leave off the m parameter to use the default MPEG 2 TS format This command example uses the default parameters of 8Mb s for the H264 video bitrate and 128Mb sec for the audio bitrate encoding the audio using MPEG4 AAC with a 48KHz audio sampling rate To encode using a different video bitrate or to set other encoding parameters use the h option as described above to first find the options you are interested in and then add them to the command line using the above command line as an example to start with By default starting qvplayer from the command line runs it in the foreground From this foreground mode you can interactively set certain parameters such as changing the video encoding bitrate Typing help gives you a list of the interactive commands Type quit to stop the encoding 9 3 Playing Video From a File To decode and play out a stored file cd to the external media directory such as cd media sdal and type qvidium qvplayer I fil O video f filename Where filename is the file name referenced to the current directory For example if the file on a USB Flash stick is called tes
41. e the encoder to listen for a start packet from the decoder On a QVAVC HD Decoder click Enable under the Decoder s Server tab and enter the IP address of the QVidium encoder When you click Start on the Decoder the decoder will send an IP packet to the encoder to initiate a video session Copyright 2009 2011 QVidium Technologies Inc Page 18 of 51 4 Decoder Configuration and Operation As with the encoder the decoder can be configured and operated from a web browser This section describes how to configure and operate the decoder 4 1 Decoding Profile and Web Interface You must use the web interface to edit the decoding profile Enter http IPAddress where IPAddress is the IP address of the decoder For example http 192 168 1 23 1 Make certain that the encoder is stopped as explained in Section 3 1 Select the Decoder menu on the left side of the web page Select the Profile menu option underneath the Decoder menu A Decoder Profile interface should display in the main area to the right of the menu system as shown in Figure 3a through 3c below and in Appendix B 4 Editthe decoder profile Three tabbed forms together comprise the complete decoder profile These 3 forms shown in Figures 3a through 3c allow configuration of network configuration ARQ error correction setup and configuration of a remote QVidium video server respectively Please refer to Appendix B for a detailed description of each of these parameters
42. es you can safely remove the external storage device and if desired insert another storage device As long as you first unmount the old storage device the next storage device will be mounted as media sdal If you do not unmount the storage device or mount a second storage device the second device will mount at location media sdb1 Currently there us a limit of only 2 different mount points sda1 and sdb1 Additional partitions on a given storage device will auto mount as media sdax or media sdbyY where X and Y are partition numbers starting with 2 and incrementing up to the number of partitions on that storage device 9 2 Encoding to a File You will be using the application qvplayer located in the qvidium directory to operate the codec from the command line interface To get the full set of options to qvplayer run it as follows qvidium qvplayer h We suggest that you first cd to the mount external storage directory and then run qvplayer To encode to a file run the following command qvidium vplayer I input source O file o output file name The input source can be one of sdi hdmi composite or s video The encoder automatically detects the input video resolution whether it is PAL or NTSC and whether the input is High Definition HD or Standard Definition SD video For example to encode an sdi input to an MP4 output file called test mp4 type Copyright 2009 2011 QVidium Technologies Inc Pag
43. ets the number of 188 byte MPEG 2 transport stream packets per UDP IP output packet payload The default of 7 sets the payload to 1316 bytes which minimizes the IP packetization overhead A lower value results in a higher output packet rate Use Pacing Because the video stream is VBR variable bit rate an I Frame Key Frame may generate a large burst of IP packets Pacing adds output buffering and regulates the output packet rate to attempt to equalize the output packet rate and reduce burstiness Network Bonding and LAN1 Bonding Percent Network bonding is a special feature designed for broadband wireless and other network links where a single network link has insufficient bandwidth for the video and instead you wish to take advantage of both Ethernet ports on the codec Setting this parameter to true distributes the video load across both When the two network links are asymmetric LAN1 Bonding Percent specifies the relative distribution of Ethernet packets among the two Ethernet ports The default 50 splits the load to 50 on each Ethernet port ARQ Buffers This controls the amount of memory allocated for storing outgoing packets for possible later retransmission by the ARQ error correction The default is 1024 which is generally enough for normal operation for bitrates under 5 Mbps This setting allows enough memory to also run the decoder at the same time for SD video However you should increase this to 4096 when encoding HD video or whe
44. figuration of the Encoder So please consult the Encoder Section and Appendices for and explanation of these settings as well Copyright 2009 2011 QVidium Technologies Inc Page 25 of 51 User s Manual v 23 QVidium H 264 HD Super Codec System License Encoder a Decoder Transcode e Management Network Qdidium System Name QVAVC Transcode Profile Press here for Help 2004 2009 QVidium Technologies Inc All Rights Reserved Figure 4b Transcoder Profile Network Out Tab Copyright 2009 2011 QVidium Technologies Inc Page 26 of 51 User s Manual v 23 QVidium H 264 HD Super Codec Importing Exporting amp Resetting Profiles Under the both the Encoder Decoder and Transcoder menus you will find an Import menu item an Export menu item and a Default menu item These operations provide a quick and easy means for transferring the configuration of one QVidium H 264 HD Super Codec to another H 264 HD Super Codec or for resetting the configuration settings to a known state From the Web browser interface clicking on Export opens a panel that allows you to specify the name of a file to store configuration information To configure another codec with the same parameters just point the browser to the second Codec that you want to configure You can then click on Import to automatically configure that second codec specifying the file you had just used to save the configura
45. ges None of your changes will be saved nor have any effect unless you first save them If you have any doubt about the parameters selected when running the encoder you should click on Profile after saving the parameters or starting the coder to see the current operational encoder settings 2 2 Basic Encoding Configuration As shown in Figure 1a you can select the video input source and set the video and audio encoding format and bitrates For the QVAVC HD codec the Video Input can be either SDI HDMI Composite or S Video However The HDMI input only works for unencrypted HD video and will not function if you do not have the HD encoding option i e Model QVAVC HD Lite The QVAVC codec will automatically detect and adjust for the input video resolution and format PAL vs NTSC and HD vs SD However for SD video inputs you can use the advanced encoding parameters Section 2 4 to scale down the video input resolution For Video Bit Rate enter the desired peak video encoding bit rate in bits per second To optimize IP network efficiency the encoder outputs a variable bit rate video stream VBR Therefore the encoder will use this bit rate number as an upper limit on video data bursts In general the video rate may be less than this rate depending upon video content To calculate the maximum peak IP data rate you must add to this video bit rate the audio bitrate plus any transport stream multiplexing and network packetization overhead
46. his web page for the latest firmware and application software updates the latest Changes document that describes any changes and new features and for other tips and pointers for optimal use of your new codec For specific technical help we kindly ask that you first contact the reseller or distributor from whom you purchased your QVidium product If you still require further assistance or you purchased your product directly from QVidium please contact QVidium Technologies Inc by either phone or e mail at Phone 858 792 6407 Phone Support Hours Monday Friday 9 00 am to 5 00 pm PST E mail support 2qvidium com E mail response time within 24 hours Technical support is limited to the basic functionality found in the Web user interface and to standard network applications For example we cannot provide detailed command line support unless the user has sufficient experience and knowledge of Unix or the Linux operating system For Broadband Wireless 3G networking applications because of the inherent low bitrate constraints bit rate and link variability and complexities of found in Broadband Wireless 3G networks we cannot directly provide support for applications over Broadband Wireless 3G Networks In these cases we would be glad to refer you to one of our vertical marketing and System integration partners for help with your specific application Copyright 2009 2011 QVidium Technologies Inc Page 38 of 51 User s Manual v 23 QVi
47. ideo and audio signals as UDP IP packets in all cases regardless of the type of packet transport you select Specifying UDP treats the packet payload as raw MPEG 2 Transport Stream data All the other transport types will assume that the incoming packets have an RTP header at the start of the payload as per IETF RFC 2733 and related standards The network interface to the decoder includes QVidium s patented synchronized network de jitter buffering mechanism In the decode interface you may specify a delay for this de jitter buffer in milliseconds When using ARQ or RTP network transport mode the de jitter buffer holds the specified number of milliseconds of packets to give the decoder ample time to account for random delays and to allow the decoder to correct packet ordering The decoder uses RTP sequence numbers of incoming packets to insert incoming packets into their proper place in the de jitter buffer before releasing those packets into the MPEG decoder The de jitter buffer also uses the RTP timestamp to synchronize the decoder s network clock with the video source to adjust the de jitter buffer hold time In addition to the de jitter packet buffer you can specify the size in milliseconds of the decoder s low level video data buffer In contrast to the de jitter buffer this video input buffer always exists even when error correction is disabled It buffers out variations due to both network induced jitter and operating system jitter
48. in handling packet loss and network interruptions We generally recommend setting the Video buffer size to between 300 and 500 ms For low latency applications you can try setting it as low as 150 ms For maximum robustness you can increase this parameter to 1000 ms We also recommend enabling Detect video break and setting the Detect video break limit to 150 ms When the decoder detects a pause or interruption in the flow of incoming packets of this value or higher the Detect video break feature will automatically restart the decoder to help prevent it from getting into a bad state This can help if you are experiencing color loss or other decoder problems The ARQ tab shown in Figure 3b above configures the parameters for Automatic Retransmission Request ARQ Error Correction These parameters are explained in Appendix B The last panel the Server tab enables you to pull in a stream from a QVidium video server For more details on these features please consult Appendix B You should set the Use Server to No the default when not using a QVidium server and in general when receiving a stream from an encoder 5 Press the Save button to save your changes If you don t click Save then your changes will be ignored 4 2 Starting the Decoder Enter http IPAddress where IPAddress is the IP address of the decoder 1 Select the Decoder menu on the left side of the web page 2 Click on the Start button 3 When a valid video over IP stream
49. ing packets When the encoder and decoder are both started the decoder automatically measures the round trip delay and packet jitter to the encoder and automatically configures ARQ for optimal operation according to a few basic user specified parameters as described in Section 2 3 2 Note For testing ARQ error correction select ARQ transport at both the encoder and decoder and use the default ARQ parameters at the decoder receiver 2 4 Advanced Video Encoding Configuration The encoder has a set of advanced configuration settings that you can configure from the Advanced Encoder Profile tab as shown in Figure 1b below These parameters are divided into 3 sections Advanced Encoding parameters Output parameters and Network parameters Warning Some combinations of parameters can cause the encoder to malfunction QVidium does not test nor can it support all possible combinations of parameters However our philosophy is to allow the user to have the flexibility of setting these parameters to suit his needs and make the decision for himself as to whether the resulting operation meets the needs of his application To get the system into a known reliable configuration simply click Default This will reset all the advanced parameters to known good values Advanced Encoding Parameters PAL N Composite S Video This only applies to PAL video input It has no effect for Composite video Setting this to Yes causes a PAL signal to conform to the P
50. itiate the video stream These modes are RTSP and Server Mode 3 4 1 RTSP Mode Real Time Streaming Protocol or RTSP is a common and widely used protocol for controlling a video stream To set up the QVAVC HD codec for RTSP operation to a computer running VLC for example you can use the following procedure 1 On Encoder Profile select RTSP IP Transport on the Basic tab 2 Click Save and then click Start 3 From VLC www videolan org a Select Open Network Stream from the Media menu An Open Media dialog should display b On the dialog select RTSP from the Protocol drop down list c Enter 192 168 1 23 vox mpg amp xcode 0 amp input 0 in the Address field Substitute 192 168 1 23 for the actual IP address of your codec d Click on the Play button in VLC A green screen from VLC usually means the decoder is not receiving IP packets On the decoder menu you can click Status That will tell you if you are receiving bits Also on the Encoder you can click on Status from the Encoder menu to see if the encoder is sending bits On both systems there is a Show Log menu option that may help debug the setup if it is not working 3 4 2 Server Mode QVidium also has its own Server Mode that allows a QVidium decoder device or application to remotely start a QVidium encoder and initiate a video stream On the QVAVC HD simply leave the Destination IP Address blank and Start the encoder This will caus
51. ket transport Also specify the destination IP address and UDP port number The destination IP address may be a multicast or a unicast IP address The encoder encapsulates the video and audio signals as UDP packets in all cases regardless of the type of packet transport you select Specifying UDP eliminates the RTP header and encapsulates the encoder s multiplexed MPEG 2 transport stream directly as the payload of the UDP packet All the other transport selections add an RTP header to the UDP packet stream The RTP header adds a timestamp and packet sequence number before inserting the MPEG 2 transport stream packets into the RTP UDP IP packet payload All of these transport types insert an integral number of 188 byte MPEG 2 transport stream packets into the packet payload as specified by the TS packets per IP packet parameter The IP encapsulation adheres to the IETF RFC 2733 standard for video over IP that specifies that the packet payload must comprise an integral number of whole MPEG 2 transport stream packets within an RTP header so all transport types aside from UDP only are compatible with the ProMPEG Forum s standard and the IETF RFC 2733 standard Copyright 2009 2011 QVidium Technologies Inc Page 12 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 2 3 2 Error Correction ARQ Automatic Retransmission Request To enable Automatic Retransmission Request ARQ you must first select ARQ transport from the Profile dialog A
52. l additional buffer in addition to the Jitter Buffer that reorders incoming packets in case the network is causing some of the packets in the incoming video stream to arrive out of order This buffer will re order any packets within it to be output in the order of the RTP sequence number To enable this feature you must specify a buffer size in terms of the number of packets this buffer must hold until any packets are output to the decoder This feature is most useful if you choose to use Network Bonding on the decoder which causes the outgoing video stream to be interleaved between the two Ethernet ports In this case varying network delays may cause packets to arrive out of sequence which this feature helps to fix Detect video break This feature only works for Network input It monitors the PCR timestamps in the incoming MPEG2 Transport Stream for discontinuities and unexpected values and then automatically restarts the decoder when it detects a problem Detect video break limit This parameter lets you set the minimum discontinuity time out of between 100ms and 2000ms 2 seconds If the decoder detects a break in the incoming IP stream larger than this value then it will restart the decoder to prevent the decoder from getting into a bad state ARQ Parameters The parameters below ONLY pertain to QVidium ARQ error correction They will be ignored unless ARQ is selected for IP Transport Mode Auto or Manual In Auto mode immediately
53. lable for either input or output With the Digital I O license but without the HD license as in the model QVAVC HD LITE HD encoding is not enabled but all the SDI and HDMI interfaces are active and available HD decoding is also available The model QVAVC HD includes both the Digital I O and the HD Encoding licenses However the Transcoding license must be purchased separately but can be installed with any of the QVAVC models If you would like to upgrade to another model by adding a license please contact QVidium to purchase additional license keys Copyright 2009 2011 QVidium Technologies Inc Page 3 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 1 Introduction Congratulations on purchasing the QVidium H 264 HD Super Codec QVidium H 264 HD Super Codec Front View 1 1 Overview The H 264 HD Super Codec can encode decode or transcode standard or high definition video using either MPEG2 main profile or MPEG4 AVC Part 10 H 264 High Profile Level 4 1 compression and to interface a video feed from a wide range of video standards and connections for transport over nearly any IP network The H 264 HD Super Codec includes QVidium s patented advanced ARQ Error Correction and clock synchronization With these advanced Quality of Service QoS features the H 264 HD Super Codec can send video over nearly any network and across the world including wireless connections and the public Internet
54. ls in Figure 2 below Qdidium System Name Encoder gt System Encoder Volume License Y Encoder This only affects the analog input volume This does Profile not affect the SDI or HDMI input audio Import Export Default Presets Start Volume USA Professional Bitrate Custom Controls Status Monitor Attenuate 127 Clear Stats SO Gain 25 Show Log Clear Log Stop Figure 2 Encoder audio gain and attenuation controls Copyright 2009 2011 QVidium Technologies Inc Page 16 of 51 User s Manual v 23 QVidium H 264 HD Super Codec The analog audio input by default accepts a maximum input voltage of about 400 MVpeax Above this level the input circuitry limits any additional signal levels by clipping the digitized signal to this peak value This level is close to the standard consumer analog level of 447 MVpeax and significantly less than professional peak audio voltage levels 1 737 V5s4 US and 2 192 Vpeax German In order to accommodate various consumer and professional analog audio input sources you can select from among 3 preset standard audio signal levels Consumer Professional US Professional Europe You can also manually adjust the attenuation of the audio input 3 3 Dynamically Changing the Video Encoding Bitrate Once encoding has begun you can instantaneously vary the video encoding bitrate This can be useful when connecting to wireless modems and other network connections with limited b
55. mission requests ARQ Port However you must make certain that the same ARQ port number is set in both the encoder as in the decoder Although the automatic measurement of the round trip time uses multiple measurements to take into account random network delays for some networks you might wish to specify a larger round trip value or to specify a larger number of retries in case the upstream link loses some of the retransmission request messages In automatic robust mode of ARQ operation the system automatically measures the round trip time and divides that number into your specified Target Latency to determine the number of retries to use However in Manual Mode you can force ARQ to always use a specified number or retransmission requests Note For testing ARQ error correction select ARQ transport at both the encoder and decoder and use the default ARQ parameters at the decoder receiver Please also be certain that ARQ has also been selected at the encoder Copyright 2009 2011 QVidium Technologies Inc Page 23 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 5 Transcoding Option The QVidium H 264 HD Super Codec can operate as a transcoder and convert in real time a live video stream from one video encoding format to another change the video stream bit rate scale down the video resolution and change the audio encoding format and audio bitrate In order to enable transcoding you must obtain a Transcoding License Ke
56. n using encoding at bitrates higher than 5 Mbps However you must not start the decoder when running the encoder with this parameter set to 4096 Copyright 2009 2011 QVidium Technologies Inc Page 15 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 3 Encoder Operation This section explains how to operate the Codec as a video encoder Once the encoder has started you can also change the audio attenuation and gain settings and dynamically change the video encoding bitrate 3 1 Starting and Stopping the Encoder Enter http IPAddress where IPAddress is the IP address of the encoder 1 Select the Encoder menu on the left side of the web page 2 Select the Start menu option underneath the Encoder menu to start the encoder Likewise click on Stop to stop the encoder If the encoder is running you can edit the parameters and click on Start to restart the encoder with the new parameters There is no need to first stop the encoder since the Start command first performs a Stop operation Note If you wish to reconfigure the encoder remember to first Save any configuration changes before restarting the encoder 3 2 Adjusting Encoder Audio Levels The analog audio conditioning and digitizing circuitry includes both an audio preamplifier followed by a audio attenuation block Once the encoder has started you can dynamically vary the gain and attenuation of the audio signal that is being fed to the digitizer with the contro
57. nologies Inc All Rights Reserved Figure 1b Advanced Encoder Configuration Low Delay This parameter enables a low latency mode that will generally reduce the total end to end latency to between 1 2 second and one second Analog audio input for HD Video This parameter only applies to the SDI and HDMI inputs and allows you to bypass the embedded audio in these inputs Instead setting this parameter configures the encoder to use the analog audio input in place of the embedded audio Audio Channels Normally this is set to two for stereo audio encoding You can set this to one for monaural audio to reduce audio bitrate WARNING Setting this to 1 channel can cause the encoder to unexpectedly halt under certain circumstances Video Filtering Enabling Video Filtering applies a special pre filter to the video input allowing more efficient video encoding Video Frame Rate and Resolution for SD Normally the encoder automatically detects the frame rate and resolution of the video input signal Setting these values allows you to override the original input signal to reduce the frame rate and or resolution enabling very low output encoding bitrates such as for broadband wireless connections Video Aspect Ratio This sets a bit in the video stream to tell the display device what output aspect ratio to display Copyright 2009 2011 QVidium Technologies Inc Page 14 of 51 User s Manual v 23 QVidium H 264 HD Super Codec Number P F
58. nual mode Round Trip Time Number Retries Burst Drop and Robust Mode In automatic mode the system automatically measures and calculates the Round Trip Time and Number Retries Automatic mode only uses two parameters Target Latency and Burst Drop In most cases automatic mode and the default parameters should be adequate Of the required parameters the first parameter Target Latency specifies the total delay in milliseconds allotted for the request retransmission and recovery process The ARQ mechanism will attempt as many retries as possible within this target latency time Thus larger target latency times increase the delay before video is output but allows for more chances of requesting and recovering any missing packets However automatic mode also sets an internal maximum limit based on its measurements that may be less than the target latency time A Burst Drop delay can also be specified to delay any retransmission requests for a time equal to the maximum expected packet loss time such as from dynamic router changes of other sources of burst loss A Robust Mode can also be selected When selected checked a minimum of two tries will be attempted for recovering any missing packets When not selected unchecked ARQ will always try at least once to recover any missing packets To help with firewall configuration and to handle potential port conflicts the user can change the default port that ARQ uses to send upstream retrans
59. o http Awww qvidium com qvavc QVidium provides these update as a pkg file that you can upload into the Codec via the web browser interface To perform an upgrade you must perform the following steps Stop the Encoder Decoder and Transcoder if any of these functions are running 2 Power cycle the system to clear memory 3 Copy the upgrade pkg file into a convenient location on your PC 4 Point your web browser to the Codec and click on Upgrade in the System menu 5 Click on the Browse button and locate the upgrade file 6 Click on Upgrade and wait for the upgrade to finish DO NOT DISCONNECT FROM POWER OR INTERRUPT THIS OPERATION UNTIL IT COMPLETES 7 Click on Reboot from the system menu to reboot the Codec As part of this update the update will be stopping and restarting the HTTP Daemon in the codec Note Sometimes a web browser will not be able to continue to reconnect to the new HTTP Daemon after it restarts causing you to no longer see the update progress If this happens please wait 2 minutes after which it would be safe to power cycle the codec so that it can boot from the new update You can then check under System Version to confirm that you have the new firmware Copyright 2009 2011 QVidium Technologies Inc Page 7 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 1 6 System View Front View Computer Interface ports and Indicators Console eSATA Indi
60. of 51 User s Manual v 23 QVidium H 264 HD Super Codec second for NTSC and 25 fps for PAL video format If you need to produce lower video bitrates and reducing the resolution is not sufficient or undesired you can use this feature to sacrifice frame rate for lower bitrates However to use thus feature you must select MPEG 4 SP encoding and Program Stream transport Video Encoding The H 264 HD Super Codec digitizes an analog composite or S Video signal according to the ITU R BT 656 standard performs a 4 2 2 to 4 2 0 conversion and compresses the digitized video using either the MPEG 2 video encoding standard MPQ ML ISO IEC 13818 2 or MPEG4 AVC H 264 high profile compression depending upon your selection We suggest that you select H 264 compression The QVAVC HD codec incorporates High Profile Level 4 0 to 4 1 MPEG4 AVC part 10 video encoding This nearly always produces better video than MPEG 2 video encoding However we provide the option to select MPEG 2 video encoding for backward compatibility with other devices Video Format The QVAVC HD Codec automatically senses and selects the correct video input format NTSC or PAL along with the correct resolution NTSC captures interlaced video at 29 97 frames per second while PAL captures interlaced video at 25 frames per second Thus Video Format is not listed in the user interface SD Only Video Resolution NTSC and PAL The video resolution for Standard Definition
61. old the product A representative will authorize the exchange or repair of the defective item Products must be shipped in the original or comparable packaging with shipping and insurance charges prepaid in U S currency 4 Limitation of Warranty Neither QVidium nor its third party suppliers make any other warranty or condition of any kind whether expressed or implied with respect to the QVidium products and specifically disclaim the implied warranties or conditions of merchantability satisfactory quality and fitness for a particular purpose 5 Limitation of Liability Except for the limited obligations specifically set forth in this warranty statement in no event shall QVidium or its third party suppliers be liable for direct indirect special incidental or consequential damages whether based on contract tort or any other legal theory and whether advised of the possibilities of such damages Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages so the above limitations and or exclusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state Copyright 2009 2011 QVidium Technologies Inc Page 50 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 12 7 Appendix G FCC Notice NOTE This equipment has been tested and found to comply with the limit
62. on that seems to appear only during periods of relatively louder audio passages can be the result of clipping of the input audio signal This occurs when the input audio signal level exceeds the voltage level limits of the audio input circuitry To fix this problem increase the audio attenuation in the Volume control on the Encoder when the encoder is running until the distortion is gone Other problems with encoding and decoding video 1 First eliminate any network problems by connecting the encoder and decoder to the same Ethernet switch Use CodecManager running on a PC also connected to that switch to verify that the IP and MAC addresses are all different 2 Click on Defaults on the Encode and Decode sides to reset all your profile settings to their factory default values 3 Verify that the Destination IP address and port specified on the encoder match their configured values on the decoder For unicast leave the multicast address blank on the decoder For Multicast make certain that you have specified the same multicast address on the decoder as well as on the encoder If multicasting through a router make certain that the router supports IGMP v2 and that it is enabled Copyright 2009 2011 QVidium Technologies Inc Page 37 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 11 2 Support We have set up a special support page for our QVAVC line of products at http www qvidium com qvavc Please take advantage of t
63. only for versions 103 and earlier Copyright 2009 2011 QVidium Technologies Inc Page 34 of 51 User s Manual v 23 QVidium H 264 HD Super Codec I I Troubleshooting amp Support The H 264 HD Super Codec includes a number of features to aid in system security and logging 11 1 Troubleshooting Common Problems No response from web browser or cannot ping system 1 Make certain that device is powered on and connected to your network 2 Check that green LAN light in front is lit and link light at RJ 45 port is on 3 Make certain that device is on the same subnet as the computer you plan to connect to Either use a cross over Ethernet cable to connect directly to the computer or connect through the same switch as your computer 4 Use QVidium s CodecManager application to find IP address of system and to confirm that Codec is online You can download CodecManager from QVidium s Download page http www qvidium com click on Downloads and scroll down to the QVidium Codec Management Software section Download and install the file QVidiumCodecManager X msi X is the current version number If that fails to locate your Codec then try the other LAN port If still not seeing the code then continue to step 5 NOTE CodecManager requires that any intermediate switches or other network equipment between your PC and the QVAVC Codec must pass Ethernet Broadcast packets If not then you can try using a cross over Ethernet
64. ort type ARQ RTP or UDP For a Set Top Box such as an Amino make certain that the encoder is set to Transport amp UDP 6 Make certain that the encoder is not sending CIF or SIF resolution The decoder can only decode FULL or HD resolutions The decoder cannot scale the incoming video Copyright 2009 2011 QVidium Technologies Inc Page 36 of 51 User s Manual v 23 QVidium H 264 HD Super Codec resolution Color loss on decoded video a Network losses or other interruptions that can cause breaks in the input video stream may cause the decoder to lose sync and get into a state where it cannot decode color resulting in a complete loss of color on the decoded video output b To help increase the tolerance of the decoder to these issues try increasing the Video Buffer Size to a minimum of 500 ms or increasing it up to 1000 ms c Enable Detect Video Break so that the decoder will restart when it detects a break in the packet stream to help prevent the decoder from getting into a bad state Audio pauses clicks or gaps or video freezes during decoding e Excessive network jitter such as on satellite long distance Internet or 3G wireless links can result in pauses or short gaps or clicks in the audio output To fix this increase the size of the decoder s Video Input Buffer Size to buffer out any excessive jitter on the video input stream Audio distortion e A tinny or metallic quality to the audio or a distorti
65. p 384 Kbps Sampling rates non SDI input 32 KHz 44 1 KHz and 48 KHz SDI HD or SD embedded audio at 48 KHz 20 bit a o 4 2 0 MPEG 2 MP ML encoding ISO IEC 13818 2 standards compliant 4 2 0 H 264 MPEG 4 AVC High Profile Advanced Video Coding Part 10 Configurable between High Profile Main Profile and Baseline Profile encoding up to Level 4 1 HD Input 1920x1080 25 or 30 fps interlaced 1080130 1280x720 50 or 60 fps 720p60 HD encoding 1920x1080 25 or 30 fps interlaced 1280x720 25 or 30 fps progressive NTSC 720x480 352x240 SIF resolution for encode only PAL 720x576 352x288 CIF resolution for encode only Multiplexing Format MPEG 2 Transport Stream amp MP4 MP4 for files only not for live streaming Encode Line 21 Closed Captioning Decoder does not currently decode closed captioning Serial Interfaces e DB 9 RS 232 Console Interface e DB 9 RS 232 for future expansion e g PTZ camera control e 2 USB 2 0 Ports for video storage and plans for broadband wireless interface Configuration and Monitoring e Web setup amp monitoring interface over IP network e SNMP v1 amp v2c traps optional Electrical e AC Power Input 100 240VAC 250 150 mA 50 60Hz 12 Watts e Auto sensing AC power adapter included Copyright 2009 2011 QVidium Technologies Inc Page 48 of 51 User s Manual v 23 Mechanical e Dimensions 8 25 W x 7 16 D x 1 75 H e Dimensions mm 209 W x 182 D
66. rames This sets the number or Predictive frames in the Group of Pictures GOP Unless you need a specific GOP you should set this to Auto Number B Frames This sets the number of Bi Directional frames in the GOP Unless you need a specific GOP you should set this to Auto The GOP can be calculated by the formula GOP P 1 B 1 Thus for all l Frames GOP 1 you would set P 0 and B 0 For Baseline Profile the B parameter is ignored internally set to 0 MPEG4 Profile and Level This sets the H 264 profile and level Auto uses the best possible encoding for the given parameters Use this for backward compatibility with decoders that cannot handle the more advanced encoding features If you see jerky video on a decoder and there is no packet loss and the CPU is not overloaded then you may want to try lower values for these settings Control Parameters Error Handling Enable this feature when high reliability is required When set to Reboot or Restart this feature starts a supervisory monitoring process that will reboot or restart the encoder when the encoder halts for any reason Resync SDI and Resync HDMI Forces the encoder to restart when detecting lose of lock on the specified input signal Enable if encoder loses sync when the input is interrupted Output Parameters PMT Video Audio and PCR PID Changing these values changes the values for the respective PIDs Network Parameters TS packets per IP packet This s
67. ransport which strips out unnecessary null packets from the video transport stream to minimize network loading Because of its VBR transport the QVidium H 264 HD Super Codec does not include ProMPEG forward error Copyright 2009 2011 QVidium Technologies Inc Page 11 of 51 User s Manual v 23 QVidium H 264 HD Super Codec correction FEC since the ProMPEG FEC specification does not include provisions for VBR video streams However as FEC cannot anticipate varying network conditions nor correct most forms of packet loss we suggest using ARQ if you need error correction or using a QVidium QoS ProxyServer if you require FEC In contrast with FEC QVidium s ARQ is a feedback mechanism that detects packet loss at the receiver and requests the retransmission of only those lost packets from a video source A user configurable buffer at the receiver decoder delays the video stream just long enough to allow the system to replace any missing packets and re insert them in their proper order without disturbing play out of the video stream Because ARQ senses actual packet loss rather than attempt to predict packet loss it can precisely and completely restore all lost packets without disturbing timing of the video play out In contrast to FEC ARQ can successfully recover lost packets regardless of the magnitude or pattern of the packet losses provided that the network connection has enough capacity to send both the original video stream and
68. red when ARQ IP Transport is not selected ARQ Port By default ARQ normally sends upstream retransmission request packets on UDP port 7020 You can change this ARQ Port setting to any valid and non conflicting UDP port However you must make certain that you specify the same port number at both the encoder and the decoder Copyright 2009 2011 QVidium Technologies Inc Page 41 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 12 2 Appendix B Decoder Configuration Parameters This section explains the parameters related to the setup and operation of the MPEG Decoder the error correction algorithms and network transport configuration Input amp Output Parameters Input On the QVAVC HD and QVAVC HD LITE you can choose either Network or AST as the input source Network selects the Ethernet port as the decoder input ASI listens for an DVB ASI stream on the SDI BNC connector Warning Detect Video Break only works for Network input If you use ASI input then the decoder may get into a bad state if there is an interruption in the input stream Network Parameters The fields below relate to Ethernet IP video transport settings IP Transport This selects the type of video IP packet decapsulation and error correction expected by the codec in receiving a Video IP stream All packetized video transport mechanisms expect to receive a multiplexed constant or variable bit rate MPEG 2 transport stream to decapsulate and
69. rver Mode 18 4 Decoder Configuration and Operation sess 19 4 1 Decoding Profile and Web Interface sess 19 AD Starting the DeCOUBE isa bg Per RO RUD a IU Drs e Ui R 21 4 3 Stopping and Reconfiguring the Decoder sss 21 4 4 Configuring Packet Transport amp Error Correction 21 5 Transcoding OpIIOfi o ie isan de ori erp bet ie dai on tue f 24 6 Importing Exporting amp Resetting Profiles sss 27 7 System Matagemebl doo ee td m nit b deae sni nui 28 P ACCESS GODIGUELAlOFE sue oett io ruat Detlatisem ENE 28 7 2 SNMP Trap GonflgulrallOrk aio ode PEG tet atio utet 29 8 Codec Manager amp System Resets 2 2 sse 30 8 1 Godec Manager see dota I eua NUR e bed aetate ice Di t eo ea 30 8 2 Resetting the Network Parameters essere 30 8 3 Resetting the PassWOILGs eoe re reto PER UR he ea te ee EE enr e sre eo 30 8 4 Re installing the Application Software sss 31 9 Encoding amp Decoding to from Files esses 32 9 1 Mounting and Un mounting an External Storage Device 32 9 2 EmDOIDOTO a Floriano ode iet ocnie a e te tte URL EI ceca ded 32 9 3 Playing Video From a Flea DOS DRIDUIEUS uS p tae 33 10 Known PFrODIeNs o op DURER pR tis D Ga pe qe o
70. s 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 when th quipment 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 his own expense Copyright 2009 2011 QVidium Technologies Inc Page 51 of 51
71. same port number at both the encoder and the decoder Copyright 2009 2011 QVidium Technologies Inc Page 44 of 51 Server The parameters below ONLY pertain to the operation of the QVidium H 264 HD Super Codec with a QVidium QoS Proxy Server Leave this disabled when not connecting to a QoS Proxy Server This feature allows the decoder to initiate and receive a unicast stream from a QoS Proxy Server You must provide the IP address and control port for the QoS Proxy Server The decoder then sends a control packet upstream to the server when you start the decoder Use Server Select No to disable this feature Select Yes to enable operation with a QoS Proxy Server IP Address or Hostname Enter the IP address of the QoS Proxy Server to which the decoder will send a start stream message Echo Port Normally this should be left to the default UDP port 7 This port number must match the value at the QoS Proxy Server In addition you may need to configure a firewall at the server to allow ingress for packets on this port GQvidium System Encoder Y Decoder Press here for Help Profile iu RRO Server QVidium Video Server settings Export Default use Server Oves No p Address or Hostname System Name QVAVC Decoder Profile Start Status Clear Stats ldhepot Note Do not enable unless connecting to a QVidium video server Stop
72. t mp4 then use test mp4 as the filename qvidium qvplayer I fil O video f test mp4 The decoder knows to automatically set the format type the resolution the bitrate and all other relevant encoding parameters Copyright 2009 2011 QVidium Technologies Inc Page 33 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 10 The following problems are currently known to exist Known Problems Encoder 1 2 3 4 5 Only outputs VBR variable bit rate CBR constant bit rate is not implemented Closed Captioning CC is only partially implemented for SD MPEG2 video The encoder cannot pass CC data for HD or H 264 video Setting the number of Audio Channels to 1 may cause the encoder to unexpectedly halt DVB ASI output jitter may occasionally exceed ETR 290 levels 500ns Dolby AC3 encoding only available upon special request Decoder Oo NOOT ONS Decoder will not scale incoming video Decoder will not properly display CIF or SIF resolution video Maximum ARQ receive bitrate is only 4 5 Mbps Dolby AC3 decoding only available upon special request Closed Captioning is not supported May freeze if incoming video bitrate is less than 1 Mbps Detect Video Break does not work for ASI input A break in the video input can cause the decoder to get into a bad state loses color or sync if Detect Video Break is not enabled The decoder can lose color or sync when the jitter in the input
73. t using the password root System Name QVAVC System Management Configuration License Encoder Decoder Transcode Management Web admin port default 80 a rd WEB http Access Enable Disable HTTP Web Management Port currently at Port 80 status is Enabled Secure Shell ssh TCP Port 22 Current status Enabled SSH port default 22 o2 Network Allow root login Enable Disable secure Shell ssh Access Enable Disable Telnet Access TCP Port 23 Current status Enabled Telnet Access Enable Disable Appl 2004 2009 Q Vidium Technologies Inc All Rights Reserved Figure 5 Management Configuration web page Copyright 2009 2011 QVidium Technologies Inc Page 28 of 51 User s Manual v 23 QVidium H 264 HD Super Codec 7 2 SNMP Trap Configuration The H 264 HD Super Codec implements SNMP v1 and SNMP v2c traps to alert a network management system NMS of certain problems that might arise To enable SNMP traps you must enter the IP address of the NMS server where the SNMP trap messages should be sent and check Yes under Send Traps Below is the SNMP Trap Configuration page that shows all the current trap configuration settings Qdidium System Name QVAVC enol SNMP Trap Configuration License Encoder a Decoder ETIBHSCOdS IP Address Management Conf Port 162 B Community public SNM
74. tency allows the system to increase the number or repeat requests although the system will limit the maximum number of retries to a maximum of 5 even if the Target Latency value would have otherwise allowed more retries Thus depending upon the Round Trip time the maximum delay may end up being less than the specified Target Latency value Max Burst Drop Burst packet losses are common occurrences in many IP networks and the Internet IP networks may dynamically change paths in response to load balancing link failure avoidance and for other reasons During a re route a sequence of queued packets on a discontinued path may be dropped A burst of packets may be dropped when higher priority packets stall a lower priority buffer ARQ will notice a burst packet loss when the first packet after the loss arrives at the codec Setting the Max Burst Drop Delay in milliseconds will delay the ARQ repeat request by this amount to handle packet burst losses Robust Mode Normally the ARQ will only require that a minimum of one repeat request is sent to the video encoding source device regardless of the Target Latency However enabling Robust Mode will increase the minimum number of repeat requests to a minimum of two retries ARQ Port By default ARQ normally sends upstream retransmission request packets on UDP port 7020 You can change this ARQ Port setting to any valid and non conflicting UDP port However you must make certain that you specify the
75. tion of the first codec Default will reset the configuration settings for the Encoder Decoder or Transcoder depending upon which Default menu you select to their factory default settings This will allow you to reset the configuration settings to a known good state Clicking on Default will bring up a confirmation dialog box to prevent accidental resetting of the configuration Default can be helpful if you have trouble getting the encoder to work properly or cannot remember the correct settings you can click on Default to restore the encoder configuration with the factory default profile You may find it useful to use a USB flash memory stick to store these configuration profiles All configurations a stored as Unix text files If you have a text editor such as Notepad which has a Unix editing mode you have the option of editing an encoder configuration profile manually All parameters are stored in the form of multiple lines of Paramer Value lt LF gt Copyright 2009 201 1 QVidium Technologies Inc Page 27 of 51 User s Manual v 23 QVidium H 264 HD Super Codec System Management 7 1 Access Configuration The H 264 HD Super Codec includes a number of features to aid in system security and logging A Management Configuration page shown below allows you to specify the HTTP port for web access and whether to enable or disable Telnet or SSH access By default Telnet and SSH access is enabled and allows you to log in as roo
76. u are trying to encode HD video please check under License HD Encode to see that you have a license key for that feature 6 If you have an HD input on HDMI please make certain that your content is not encrypted with HDCP content protection We are required to disable encoding over IP of HDCP protected content In this case you should consider using the analog component outputs and getting a converter to convert the analog HD video to HD SDI SMPTE 292M Encoding with SDI or HDMI input loses sync when video input is switched or interrupted The encoder only synchronizes to the first few frames when encoding is started It does not monitor for changes in the video signal To detect changes in the video input and force the encoder to resync automatically please enable either Resync HDMI or Resync SDI under the Advanced encoder profile tab Cannot get decoder to display video 1 Use network monitor software on look for blinking link lights to be certain that the encoder is sending packets to your decoder If not follow the steps for Cannot get encoder to send IP packets 2 Make certain that device is powered on and connected to your network 3 Check that green LAN light in front is lit and link light at RJ 45 port is on 4 Try pinging the encoder by entering the IP address for the source device For a H 264 HD Super Codec try clicking on Network Ping 5 Make certain that both encoder and decoder are set to the same transp
77. ut unpredictable time varying throughput characteristics As described in this section we provide several mechanisms for dynamically adjusting the video encoding bitrate In particular this can allow a modem to feed back link throughput constraints directly to the encoder to dynamically optimize video quality over such bandwidth constrained networking links 3 3 14 URL Control There are 2 URLs one to get the current video bitrate and a second url to set the video bitrate These URLs return plain text no HTML to simplify parsing The Encoder Bitrate link in the web UI allows you to set the video bitrate with a browser cgi bin encoder bitrate2 cgi Gets the current video bitrate Returns VIDEO BITRATE2xxxxxxx where xxxxxxx is the current bitrate cgi bin encoder bitrate2 cgi VIDEO BITRATEzxxxxxxx Sets the video bitrate where xxxxxxx is the desired bitrate Returns VIDEO BITRATE2xxxxxxx where xxxxxxx is the bitrate that was set The maximum video bitrate is 25000000 Examples of using the wget command The initial bitrate was 23Mbps wget q O http root root 192 168 1 23 cgi bin encoder bitrate2 cgi VIDEO BITRATE 23000000 wget q O http root root 192 168 1 23 cgi bin encoder bitrate2 cgi VIDEO BITRATE 9000000 VIDEO BITRATE 9000000 wget q O http root root 192 168 1 23 cgi bin encoder bitrate2 cgi VIDEO BITRATE 9000000 wget q O http root root 192 168 1 23 cgi bin encoder bitrate2 cgi VIDEO B
78. y from QVidium Technologies Inc or one of its authorized resellers and enter that License Key in the License Transcode page As a transcoder the QVAVC HD can input either a video stream from either the IP Ethernet interface or the DVB ASI input interface and output the transcoded stream to either the IP Ethernet network port or output to the DVB ASI interface The configuration profile includes 5 configuration panels for setting up the transcoder Transcode Network In ARQ In Server and Network Out The Transcode configuration panel shown below allows you to set the input and output interfaces output video bitrate format and resolution and the audio encoding format The QVAVC HD automatically detects the characteristics of the incoming video stream You can then select the new characteristics for the converted output video stream You can choose either DVB ASI or Ethernet IP as the input or output interface You can select among MPEG2 and H 264 output formats If selecting H 264 MPEG4 AVC you can also select the MPEGA Profile and Level The transcoder also allows you to scale down the output resolution or select auto to preserve the input resolution Lastly you can also either pass through the audio untouched including Dolby AC3 or transcode among Mpeg1 Layer 2 MPEG2 AAC and MPEG4 AAC audio formats Copyright 2009 2011 QVidium Technologies Inc Page 24 of 51 User s Manual v 23 QVidium H 264 HD Super Codec

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