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QVPRO Codec

1. Metadata UDP Port 4096 Sequence OXFFFF work around yYes No Optionally output stream to another destination as a UDP stream Destination IP Address Destination UDP Port 1234 2004 2014 QVidium Technologies Inc All Rights Reserved Figure 1c Advanced Encoder Network Configuration Copyright 2011 2014 QVidium Technologies Inc Page 29 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 4 Encoder Operation QVENC and QVPRO Only 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 bit rate 4 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 Click the Start menu option underneath the Encoder menu With only a single profile the encoder should now start If you have more than one profile then double click on the desired profile to start the encoder 3 To confirm that the encoder has started click on Status and confirm that the Bit Rate is non zero If you have trouble starting the encoder please check that the appropriate link light for the input you are using is on at the front of the codec If not then check your source For SDI please check that the red error LED at the back of the codec is off For HD SDI 3
2. Click on Defaults on the Encode and Decode sides to reset all your profile settings to their factory default values 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 v3 and that it is enabled Copyright 2011 2014 QVidium Technologies Inc Page 56 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 12 2 Support We have set up a special support page for our QVPRO line of products at http www qvidium com qvpro Please take advantage of this 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 qvidium com E mail response time within 24 hours Te
3. Network 2004 2014 QVidium Technologies Inc All Rights Reserved Figure 1b Advanced Encoder Configuration Advanced Encoding Parameters Stream Mode This selects the type of bit rate shaping the encoder uses to create the multiplexed audio video MPEG Transport Stream You can select between Constant Bit Rate Copyright 2011 2014 QVidium Technologies Inc Page 25 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs CBR which is now the default Capped Variable Bit Rate Capped VBR and Low Delay VBR MPEG compressed video normally arrives in bursts CBR inserts extraneous null data to fill the gaps and maintain a constant bit rate for the output stream This helps maintain interoperability with legacy video decoders In Capped and Low Delay VBR the Stream Bit Rate only sets a peak value for the output and the encoder does not add any padding to the stream making it more bandwidth efficient Closed Caption CC This allows you to select whether Closed Captions are passed through into the output stream and the type of Closed Captioning You can select among Line 21 CEA 608 and CEA 708 For CEA 608 or CEA 708 the QVENC will add Closed Caption data from the Vertical Ancillary Data VANC in the SDI input CEA 608 and CEA 708 are not available on the QVPRO DTS delay from PCR The DTS Decode Time Stamp delay from PCR Presentation Time Stamp sets the delay in milliseconds from after the PCR until the deco
4. 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 stream leave this field blank The decoder interprets the video 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
5. User s Manual v 15 QVidium H 264 HD Video Codecs 5 2 3 ARQ Tab The ARQ tab shown in Figure 3c above configures the parameters for Automatic Retransmission Request ARQ Error Correction These parameters are explained in Appendix B Ciolidium System Name QVDec Decoder System Decoder Profile License Decode Press here tor Help Start Press here for Hel Profiles images Profile Name Default Mont Network ARQ Monitor Clear Stats Server Type None v IP Address RTMP RTSP HTTP settings Username Show Msg Clear Msg Show Log Clear Log Stop File Management Network QVidium Server settings 2004 2014 QVidium Technologies Inc All Rights Reserved Figure 3d Decoder profile Server Tab 5 2 4 Server Tab The QVPRO can pull in a stream from a QVidium video server This is configured through the Server tab shown in Figure 3d above For more details on these features please consult Appendix B You should set the Server Type to None the default when not using a QVidium server or connecting to an RSTP or RTMP stream with Evostream software and in general when receiving a stream from an encoder 5 3 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 If you only have a single decoder profile th
6. supported version of RTSP that works with a much wider variety of decoders please contact www evostream com for the EVOstream add on to the QVENC and QVPRO To set up the QVPRO or QVENC codec for the unsupported version of 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 4 3 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 QVPRO simply leave the Destination IP Address blank and Start the encoder This will cause the encoder t
7. 2 Make certain that decoder is powered on and connected to your network 3 Check that the LAN link light and activity lights for the RJ 45 Ethernet port on both encoder decoder and switch s are lit 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 IP address for the decoder from the encoder clicking on Network Ping and entering the IP address for the decoder device 6 If you cannot ping the decoder from the encoder then your stream may be blocked by a firewall at the decoder side If necessary add a Network Address Translation NAT rule to the decoder side firewall to port forward incoming packets from the UDP port you set on the encoder to be forwarded to the decoder Encoder does not start or is not outputting any packets 1 Check that a valid video signal is connected to the video Input you have configured Use the Encoder Profile page to select the video input that you have connected and wish to use The SDI input will auto sense and select among SD SDI HD SDI and 3G SDI signals If using HDMI input QVPRO only 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 If the bitrate is zero then check for a valid video input 3 If you have a valid video input th
8. 2011 2014 QVidium Technologies Inc Page 26 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs Number P Frames 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 I 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 IP output only 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 Restarting the encoder is very fast less than a second but may not recover from all types of errors Restarting can take up to 23 seconds but will recover from nearly any error Resync SDI and Resync HDMI Forces t
9. 2014 QVidium Technologies Inc All Rights Reserved User s Manual v 15 QVidium H 264 HD Video Codecs 13 3 Appendix C H 264 HD Video Codec Bitrate Limits Encode Bit Rate Limits The video encoding bit rate limits specified below are subjective suggestions based on limited empirical testing The QVENC encoder and QVPRO codec will allow you to enter any video stream bit rate and will attempt to produce the best video quality it can based on the video bit rate you set For Capped VBR mode it uses this value as an upper limit on the peak bit rate Unless noted otherwise all bitrates below assume full NTSC 29 97 fps or PAL frame rates 25 fps Therefore we have provided the values here are only as a general guideline to help with estimating the expected network loading Maximum Video Encoding Stream Bit Rates 30 Mbps for UDP or RTP transport error correction disabled 15 Mbps with ARQ error correction enabled Minimum Suggested Stream Bit Rates for general content such as movies assumes audio bitrate of 160 Kbps MPEG 2 Main Profile CBR mode e 3 0 Mbps for Full SD video resolution 720x480 e 750 Kbps for CIF video resolution 352x240 e 450 Kbps for CIF video resolution at Half Frame Rate H 264 MPEG4 AVC High Profile CBR mode e 5 0 Mbps for 1080i video resolution 3 0 Mbps for 720p video resolution 1 4 Mbps for Full SD video resolution 720x480 450 Kbps for CIF video resolution 352x240 300 Kbps
10. CAUTION The QVENC Codec coniains 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 2011 2014 QVidium Technologies Inc Page 14 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 1 9 System View QVDEC Front View Computer Interface ports and Indicators All indicator lights either glow green or are off Ref Indicator Switch Description 1 Power Glows green when the power is connected and unit is on 2 Reset Various reset functions See description in manual Ref Port Description 3 USB 2 USB 2 0 Ports external storage or LCD console or LAN2 4 Console RS 232 Console Interface via DB 9 Connector 5 LAN LAN autosensing 10 100 1000 Base TX Gigabit Ethernet Port 6 DC Power Alternate DC power input 7 20 Vdc Note DC Power input can be used simultaneously with AC input as an emergency backup or by itself Copyright 2011 2014 QVidium Technologies Inc Page 15 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs Rear View Power Video Audio I O Connectors amp RS 232 Port AC INPUT Model QVDec fima FE RoHS j 2 4 5 Ref Component Description 1 AC Power Auto sense AC power input 100 240 VAC 250 150 mA 50 60 Hz 2 S PDIF Output Digital audio output for AC3 Dolby Digital 5 1 Surrou
11. Correction essssssseeeeeeee 22 3 6 Configuring Advanced Video Encoding Profiles 24 4 Encoder OperatiOn 5 ne Ie ene EE editar e t di eda 30 4 1 Starting and Stopping the Encoder nennen 30 4 2 Dynamically Changing the Video Encoding Bitrate ssssssssss 30 4 3 Configuring the Encoder for RTSP and Server Mode 32 5 Decoder Configuration and Operation 33 5 1 Decoding Configuration and Web Interface sse 33 5 2 Decoding Profile Settings eaim EE 33 5 2 4 Video Tab da utet ede et ede etie ene el Cod eive te vbi LH 33 5 2 2 NetworkcTab inei tret E ee tl tr etie eek eri CR d 37 52 3 ARQ ab 5st nei egit tme tiat e edle in E ebd ee epi tus 39 5 2 4 Server Tab een laete rp Ie rer eat Ee peg eet 39 5 3 Starting the Decoder kA 39 5 4 Stopping and Reconfiguring the Decoder ssssssseeeeenee 40 5 5 Configuring Packet Transport amp Error Correction sse 40 6 le Ta EE 42 yi Importing Exporting amp Resetting Profiles A 43 8 System Management ceeeeeceeeee cece eeeaeeeeaeeseeeeesaeeeeeaeeseaeeseeeeetaeeseaeeeeeeeees 44 8 1 Access Configuration esses enne enne nnns nnns trenes 44 8 2 SNMP Trap Configuration enne nennen snnt entrent 45 9 Codec Manager amp System Heseis sse 46 9 1 GOdEC Te ce m 46 9 2 Resetting the Network Parameters AA 46 9 3 Resetting the Password eeeseeessseeeseseeenee
12. 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 making it unacceptable for low latency uses 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 QVPRO H 264 HD Video Codec and how to enable ARQ error correction 3 5 1 Configuring Video over IP Network Parameters To configure the IP network parameters within the Network Parameters section of the encoder profile select among ARQ RTP ProMPEG FEC or UDP packet transport Also specify the destination IP address and UDP port number The destination IP address may be a multic
13. The QVidium H 264 HD Video Codec includes a video scalar on the input and can encode all standard broadcast resolutions as either MPEG4 AVC H 264 or MPEG2 It can scale a high definition HD video input to standard definition SD or can encode HD video up to 1080p60 1920x1080 resolution at 60 frames per second Level A and Level B You can change the encoded output video resolution and frame rate using the corresponding parameters under the Advanced Encoding tab Without an HD encoding license it will automatically scale am HD video input to SD To produce the highest quality video with the least amount of bandwidth storage space and lowest delay you may choose to select H 264 encoding format and select Capped VBR streaming mode under the Advanced Encoding profile However since VBR mode can cause problems with certain decoders the encoder defaults to CBR mode Note If you require an accurate Stream Bit Rate please check the bit rate in the Status page and adjust the Stream Bit Rate as necessary since the actual output bit rate may exceed the specified value by several percent 3 5 Configuring Packet Transport amp Error Correction The QVidium H 264 HD Video Codec features some of the most powerful and advanced error correction capabilities found in any video over IP product The QVidium H 264 HD Video Codec implements QVidium s patented ARQ error correction and clock synchronization US Patents 7 551 647 and 7 522 528
14. Video Codecs Environmental e Operating temperature 0 to 55 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 H Parts and labor 1 year Copyright 2011 2014 QVidium Technologies Inc Page 69 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 13 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 relating to the product s use 2 Warranty Conditions The warranty is valid only for the first consumer p
15. a web browser All settings are stored in non volatile flash memory allowing the encoder to recover after a power failure This section explains how to configure the QVENC and QVPRO encoding parameters with full access to the capabilities of the encoder 3 1 Configuring the Encoder Overview 1 Enter http IPAddress where lt I PAddress gt is the IP address of the QVidium QVPRO H 264 HD Video Codec that you want to configure The default address is http 192 168 1 23 2 Click on Profile under Encoder from the menu on the left Then either double click on an existing encoder profile you wish to edit or click on New to create a new encoder profile The Encoder Profile interface should then display in the main area to the right of the menu system as shown in Figure 1a 3 Enter the Destination IP address and UDP port number for the decoder media server or network equipment that will be receiving the stream Enter the desired Video Bit Rate in bps and modify the other audio and video parameters such as Video Input and Audio Bit Rate in bps to suit your needs as shown in Figure 1a and explained below To enable error correction set the IP Transport to ARQ default Note For ARQ and RTP IP Transport you may enter up to 3 different destination IP addresses separated by commas 1 The QVPRO will then send an individual copy of the video stream to each of the IP addresses that you list 4 Pr
16. and HLS transport formats Enabling ProMPEG FEC SMPTE 2022 adds a ProMPEG option Copyright 2011 2014 QVidium Technologies Inc Page 21 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs Destination IP or Multicast Address By default this field is left blank In order to create a valid encoder profile you must supply at least one valid IP address This can either be a unicast or a multicast IP address In ARQ mode for IP Transport you can also supply up to 4 IP addresses separated only by commas no spaces UDP Port Enter the UDP port for the output audio video transport stream The default is 10000 If the decoder is behind a firewall you must open the firewall to port forward packets on this port to the internal IP address of the decoder ARQ Port The default is 10000 If you are using ARQ we recommend keeping this value the same as the UDP port This is the port that the ARQ error correction uses for sending upstream from the decoder to the encoder missing packet re send requests to the encoder By using the same port as the outgoing UDP port it allows you to not have to worry about configuring port forwarding for any firewalls on the encoder side of the network Note Please remember to always hit the SAVE button after making any changes or your changes will be lost You must also restart the encoder with the updated profile for these changes to take effect 3 4 Configuring Encoder Format and Bitrates
17. are experiencing color loss or other decoder problems due to excessive packet loss If you are experiencing excessive restarts of the decoder such as from network interruptions we recommend increasing this limit to 10000 ms 10 seconds and change the Error Handling to Reboot NOTE Selecting UDP transport eliminates all IP packet buffering including the Jitter Buffer the ARQ buffer and the Out of Order buffer can be useful for minimizing latency over a local area network LAN but can be a problem when receiving a stream over the Internet Please see Section 31 2 Appendix B for a detailed explanation of the other parameters Qdidium System Name QVDec Decoder System Decoder Profile License Decode c Press nere tor Help Start Press here for Hel Profiles Images Profile Name Default Status i wt are ARQ Port 1 10000 Clear Stats Mode Manual Mode Parameters Number Retries 2 Round Trip Time a N Auto Mode Parameters Target Latency ms 750 Max Burst Drop ms 2 eo El Robust Mode v 1 Sends resend requests to receiver 2 Burst Drop must be less than Target Latency Show Msg Clear Msg Show Log Clear Log Stop File Management Network 2004 2014 QVidium Technologies Inc All Rights Reserved Figure 3c Decoder profile ARQ Tab Copyright 2011 2014 QVidium Technologies Inc Page 38 of 71
18. back to a 16 9 aspect ratio This option does not actually change the encoding resolution Rather it only tells the decoder to stretch the output video to match the original 16 9 aspect ratio Video Input This allows you to select between SDI and HDMI video inputs The QVPRO H 264 HD Video Codec requires embedded digital audio from the SDI and HDMI inputs when you select the SDI or HDMI video input Closed Captioning TeleText This switch enables the encoder to capture and pass through VBI Close Captioning or TeleText depending upon whether it senses NTSC or PAL video input respectively This feature is not yet supported but planned for a future firmware release Low Delay This mode minimizes internal buffering to reduce the end to end delay encoder to decoder to less than 300 ms To be supported in a future firmware release 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 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 sel
19. be set to 115 200 Baud 8 N 1 no flow control Upon power on you should see a stream of characters as the system is booting ending with the console prompt From this prompt type resetnetwork followed by hitting the Enter key carriage return If you do not see any characters during boot up try inserting a Null Modem adapter between the R232 cable and the Console port If you have experience with network monitoring software such as Wireshark www wireshark org or Ethereal please note that upon power up the Codec will emit a gratuitous ARP packet from which you can determine its IP address by looking for the ARP packets that the QVPRO generates and analyzing its contents Copyright 2011 2014 QVidium Technologies Inc Page 7 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 1 4 Ping and Traceroute 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 idium Eu ELO ETS Aa System Ping remote host License Encoder Decoder IP Address Transcode Management Network ye Ping LANZ Multicast Ping Config Qdidium System Name QVPro System Ping results License Encoder PING 69 5 14 25 69 5 14 25 56 data bytes Decoder 64 bytes from 69 5 14 25 seq 0 ttl 47 time 79 058 ms 64 69 5 14
20. chose another program according to its order in the Transport Stream which also is its order as listed in the PMT Please note that the value you specify is not the Program Number of the stream but just the order in which the program appears in the stream Unless you are receiving a Multi Program Transport Stream MPTS that is a video stream containing multiple programs you should leave this at the default of Auto 0 User s Manual v 15 QVidium H 264 HD Video Codecs SE nee System Decoder Profile License Decode Start Press here for Help Unicast Video Network ARQ Server program 9 au mmm Output Resolution and Format 1080559 94 v ma Video buffer size ms 200 Audio sync offset 500 to 500 ms 1 Rx Proxy File Management Network annels v yl xcrciniol gt gt i leie l er S o br Hell AECH o o o1sieo yo o ales vo S lollo s a e 8 9 8 lt Cizisis Sala s amp aio S 2 Error Handling Restart v Check Audio Buffer 1 Less than zero causes audio to play back sooner greater than zero cause audio to play back later Save Cancel 2004 2014 QVidium Technologies Inc All Rights Reserved Figure 3a Decoder profile Video Tab Output Resolution and Format default 1080i59 94 The QVPRO QVDEC includes a powerful video scalar that can sca
21. encoder to malfunction QVidium does not test nor can it support all possible combinations of parameters Instead we allow users the flexibility of setting these parameters to suit their needs and make the decision for themselves as to whether the resulting operation meets the needs of an application To get the system into a Copyright 2011 2014 QVidium Technologies Inc Page 24 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs known reliable configuration highlight the profile you wish to reset and click Default This will reset all the parameters to a known set of pre tested values idium System Name QVEnc Encoder gt System Encoder Profile gt License vEncode Start Press here for Help Profiles lt a Profile Name Default Encode Status Advanced Encoding Monitor Clear Stats Diagnostics Show Msg Clear Msg Show Log Clear Log Constant Bt Rate CBR None i vi m 2 ety E No M m dee em D A S Output analog audio for mwrem me DI input L E SD SDIBitRate Video PID 256 e Audio 1 2 PID 272 H Audio 3 4 PID Fixed Fixed Audio PES No sl PCR PID Video Filtering o gt v rts Video Sharpness default Audio Lang Video Frame Rate ra Ful M Audio pa Video Ke Bee rm I Progressive Output 2 Only for Network m File HE x Bitrate Volume Hue Contrast Brightness Saturation Sharpness Stop gt Transcode gt File Management
22. has a 4 Gigabyte limit on the maximum file size In addition the current version of the firmware does not support MP4 files larger than 4 Gigabytes Setting this to Unlimited disables this mechanism resulting in a single large output file Overwrite By default the encoder adds a timestamp to the file name when recording the output to a file This insures that restarting the encoder will not over write the file Setting this to No will not add the timestamp and will cause the output file to be over written when restarted Copyright 2011 2014 QVidium Technologies Inc Page 27 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs Network Parameters TS packets per IP packet This sets 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 minimizing the IP packetization overhead A lower value results in a higher output packet rate Use Bandwidth Ceiling This is an experimental parameter that causes the operating system OS to limit the total outbound Ethernet traffic to 20 over the Stream Bit Rate By default this feature is disabled and set to No Because the Bandwidth Ceiling limits the total aggregate traffic that the Ethernet port transmits then accessing the web interface with this feature enabled can impair the output video stream Even with this feature disabled the OS limits the output bit rate to 40 Mbps which is sufficient to lim
23. network or glitches in the SDI input of the encoder can cause the audio buffer to run dry causing interruptions in the Copyright 2011 2014 QVidium Technologies Inc Page 36 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs SR gege System Decoder Profile License Decode Press nere tor Help Start Press here for Hel Profiles p i EE Profile Name Default Status network ARQ Monitor Clear Stats IP Transport ara x Multicast Address 1 Source Address 2 a Jitter ms 3 Detect video break yes vi Detect video break limit 100 to 10000 ms 1500 1 This is not the sender s IP address 2 Source Address is usually blank 3 Only applies to ARQ Optionally output an ARQ input stream to another destination as a UDP stream Destination IP Address Destination UDP Port 1234 Show Msg Clear Msg Show Log Clear Log Stop File Management Network 2004 2014 QVidium Technologies Inc All Rights Reserved Figure 3b Decoder profile Network Tab 5 2 2 Network Tab On the Network tab shown above in Figure 3b enter the desired IP Transport type ARQ RTP or UDP Select ARQ to enable error correction ProMPEG Forward Error Correction for decoding is available as an unsupported feature upon request ARQ uses RTP over UDP transport RTP adds statistics to the UDP header to help keep track of packet l
24. one of several devices a Network Ethernet port for MPEG Transport Stream TS over IP output an ASI port for DVB ASI compatible output on QVENC with optional ASI daughter card to a File on a USB or Network Accessible Storage NAS device to record the video stream as an MPEG Transport Stream File TS or have the encoder simultaneously save to a file and output over IP Ethernet by selecting File Network The encoder ignores the Network parameters when you select ASI or File TS as the output port for the encoder Copyright 2011 2014 QVidium Technologies Inc Page 20 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs To record a single contiguous file larger than 4 Gigabytes you must use an NTFS Ext3 or networked file system Also if you set a Maximum File Size under the Advanced Encoding tab to a value other than Unlimited then when a video clip exceeds this size the encoder will automatically close the current file and start a new file Video Input The QVPRO has two video inputs HDMI and SDI The QVENC has three video inputs SDI Composite CVBS and S Video Y C The SDI input detects and automatically switches among SD SDI HD SDI and 3G SDI signals on the same BNC input port However please note that at present the HDMI input only works for HD video 1080i or 720p For SD video 480i NTSC or 576i PAL or 1080p 50 or 60 frames per second you must use the SDI input On the QVENC the Composite and S Video inputs
25. only a subset of these products we note the pertinent products QVENC or QVDEC for which the section applies As of the current firmware release V 261 licenses are required to enable HD encoding on the QVENC and QVPRO The QVENC also requires a license to enable its SDI interface However the QVDEC provides SDI HD SDI output for SD and HD video without requiring any additional licenses dual encoding and bi directional operation These licenses may be purchased separately at a later date If you would like a demo license or to purchase license to enable any particular optional feature please contact QVidium Technologies Inc Throughout this manual unless otherwise noted any mention of QVPRO by itself can equally apply to the QVENC and QVDEC You can therefore substitute QVENC or QVDEC as appropriate for QVPRO In addition QVidium has partnered with EVOstream www evostream com to provide optional Web Streaming services and capabilities including RTMP Flash Media HLS and RTSP support Please contact EVOstream directly for more information or to purchase license keys to enable these features Copyright 2011 2014 QVidium Technologies Inc Page 3 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 1 Introduction Congratulations on purchasing your new QVidium broadcast video networking product Qiidium QVidium H 264 HD video networking products Front View Clockwise from upper left QVENC encode
26. only accept SD video Stream Bit Rate This sets the total output stream bit rate The QVPRO QVENC sets an internal video bit rate by subtracting the audio bit rate from the Stream Bit Rate and setting an additional margin for IP packetization For all stream modes the output bit rate should not exceed this value However there may be a variation in output bit rate of up to about 5 over the value you set If the bit rate is too low for the video content you have then you can expect to see pixelization and blurring of the image for scenes with high motion Normally with the HD encoding license the encoder will use this Stream Bit Rate regardless of whether the input is SD or HD resolution However under the Advanced Encoding parameters you can set a bit rate for SD video that will automatically be used when you switch the input to an SD feed For HD feeds the encoder would otherwise use the basic Stream Bit Rate In this way the encoder can automatically switch between HD and SD video encoding with appropriate bit rates to match by simply changing the SDI input signal Video Encoding You can select primarily between H 264 encoding selectable profile and level High Profile by default and MPEG2 Main profile H 264 requires about v2 to 1 3 of the bit rate for comparable video quality versus MPEG2 Audio Bit Rate This sets the total bit rate for the combination of the 2 audio channels left and right channels of a single audio pair Th
27. port default 22 22 Network Allow root login Enable Disable Secure Shell ssh Access Enable Disable Telnet Access TCP Port 23 Current status Enabled Telnet Access S Enable Disable 2004 2011 QVidium Technologies Inc All Rights Reserved Figure 5 Management Configuration web page Copyright 2011 2014 QVidium Technologies Inc Page 44 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 8 2 SNMP Trap Configuration The H 264 HD Video 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 QVPro Transcode Management Configure Port 162 Password I Get v1 MIB Community public Get v2 MIB SNMP Traps SNMP Device S1AN 1 OLAN 2 Network Method vi Trap Ov2c Trap Send Traps ves 9No Change trap configuration fi ins SNMP Trap Configuration icense Encoder Decoder IP Add S 2004 2011 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 n
28. produces better video Copyright 2011 2014 QVidium Technologies Inc Page 58 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 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 QVPRO 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 video D 1 resolution is 720x480 pixels for NTSC resolution 480i 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 Video Codec 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 can output a 16 9 SD video feed by squeezing the image to a 4 3 aspect ratio before outputting Setting the Aspect Ratio to 16 9 in the encoder sets bits in the MPEG elementary stream that tell an MPEG decoder to stretch the incoming video stream
29. 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 Video Codec encodes audio using either MPEG 1 Layer Il 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 1 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
30. 2 and the IETF RFC 2733 standard 3 5 2 Error Correction ARQ Automatic Retransmission Request To enable Automatic Retransmission Request ARQ you must first select ARQ transport from the Profile dialog ARQ 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 Normally the ARQ port should be set to the same value as the outgoing UDP port for the video stream with a default value of 10000 This will allow the upstream ARQ retransmission request packets to travel back through most encoder side firewalls without requiring any special configuration at the encoder side firewall If you use a different ARQ port than video UDP port then you must also be certain to configure any encoder side firewalls to allow the upstream ARQ retransmission request packets through to the encoder You may change the value of the ARQ port but the ARQ and UDP port settings must match on both the encoder and decoder 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 seq
31. 25 71 ttl 47 time 78 37 Transcode bytes from 69 5 5 seq ds me 7 ms 64 bytes from 69 5 14 25 seq 2 ttl 47 time 80 256 ms Management Y Network 69 5 14 25 ping statistics LAN1 3 packets transmitted 3 packets received 0 packet loss LAN round trip min avg max 78 377 79 230 80 256 ms Multicast Ping Config Hostname Status IP Address Ping Traceroute 2004 2011 QVidium Technologies Inc All Rights Reserved Likewise you can use Traceroute to ping every router along the route from the QVPRO to the IP or DNS address you specify Traceroute is very helpful in locating instances where an ISP might employ dynamic load balancing and other routing problems that can affect the quality of the video transport Dynamic Load Balancing occurs where an ISP might specify an alternate route to send packets to balance the load across its network This is fine for web pages that use TCP and can Copyright 2011 2014 QVidium Technologies Inc Page 8 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs tolerate random delays However this can cause video streams to become mis ordered jumbling the video content Using the Jitter Buffer in the QVidium decoder or ARQ software can often restore correct packet order and stream integrity at the cost of additional delay You can also avoid Dynamic Load Balancing by requesting MPLS Multi Protocol Labeled Switching service from your ISP 1 5 Passwords and Security The QVi
32. 25ms This helps to reduce packet loss on Internet links that limit packet bursts It also helps with interoperability with older decoders that have very limited input buffers This feature is on by default but it can add 34 second of latency or more to the stream If low latency is required then you can select the Low Delay VBR for the Stream Mode which uses a different mechanism to minimize packet jitter 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 13 3 For more information on the various video parameters Frame Rate Encoding Format Resolution etc please see Appendix A Section 13 1 For HD or SD video you can select either MPEG2 or MPEG4 AVC H 264 Video Encoding Warning By default the SDI or HDMI video input expects to see embedded audio for the encoder to start To encode a stream without embedded audio please check video Only for the Audio Video parameter in the Advanced tab You can also encode only audio by setting this parameter to Audio Only For the QVENC you also have the option of using the analog external audio inputs for the audio source to embed into the output stream 3 3 Basic Encoding Configuration All the basic parameters you normally would need to set when creating a new encoding profile are grouped together under the Basic tab of the Encod
33. 40p30 Copyright 2011 2014 QVidium Technologies Inc Page 31 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 4 3 Configuring the Encoder for RTSP and Server Mode Note These functions have been disabled in the current release but may be re instated by special request Please contact QVidium support at info qvidium com if you require either of these modes of operation For RTSP operation we recommend contacting EVOstream www evostream com and purchasing an optional license for their package of RTMP HLS and RTSP protocols For Server Mode we recommend deploying an external PC running our QVidium Media Server software since the QVPRO QVENC can only support outputting a limited number of streams as a server 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 QVPRO also has two alternate modes of operation that allows a remote Decoder such as another QVPRO code an Amino Set top box configured with QVidium software or the QVidium Stream Viewer application to initiate the video stream These modes are RTSP and Server Mode 4 3 1 RTSP Mode Real Time Streaming Protocol or RTSP is a common and widely used protocol for controlling a video stream The free unsupported version of RTSP is only known to work with VLC For a
34. EG 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 HTP 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 P4 for ProMPEG FEC P 2 for column parity and P 4 for row parity packets Jitter 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 QVPRO 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 Bu
35. G SDI and ASI inputs please check that the appropriate green LED at the back of the codec is lit 4 If these indicators look ok then click on Show Log to check the log file Near the end of that page you should see the line Start encoding Ok If the video source is absent or invalid the last line of the log may read Video NOT locked waiting for valid input Note To comply with copyright laws the codec will not encode HDMI input with encryption Also the HDMI input cannot currently handle SD video only HD resolutions 5 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 4 2 Dynamically Changing the Video Encoding Bit Rate Once encoding has begun you can instantaneously vary the video encoding bit rate for VBR streams This can be useful when connecting to wireless modems and other network connections with limited but unpredictable time varying throughput characteristics As described in this section we provide several mechanisms for dynamically adjusting the video encoding bit rate In particular this can allow a modem to feed back link throughput constraints directly to the encoder
36. G SDI amp DVB ASI input with embedded audio 7 HDMIIN HDMI HD Input 8 SDI ASI Output SD SDI HD SDI 3G SDI amp DVB ASI output with embedded audio 9 HDMI OUT HDMI HD Output Note Serial number not shown is located above DC power connector Important Safety Information e For PLUGGABLE EQUIPMENT the socket outlet shall be installed near the equipment and shall be easily accessible e CAUTION The QVPRO 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 2011 2014 QVidium Technologies Inc Page 12 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 1 8 System View QVENC Front View Computer Interface ports and Indicators D Gdidium All indicator lights either glow green or are off Indicator Switch Description 1 SDI Glows green with active SD SDI or HD SDI input 2 CVBS Glows green with a valid composite or S Video input signal 3 Power Glows green when the power is connected and unit is on 4 Reset Various reset functions See description in manual Note Whether this indicates Composite CVBS or S Video Y C depends upon video input selection from last time encoder was started Defaults to CVBS indicator at power on Ref Port Description 5 USB 2 USB 2 0 Ports external storage or LCD console
37. QVidium H 264 HD Video Codecs 1 2 Troubleshooting amp Support The H 264 HD Video Codec includes a number of features to aid in system security and logging 12 1 Troubleshooting Common Problems In general if you are having trouble getting video from the encoder to the decoder follow the following procedure 1 Check the Encoder Status page for a valid bit rate to make certain that the encoder is running if not please check the video input or for SDI input check the Diagnostics page or click on Show Log and e mail the log output to us at info qvidium com along with your phone number or Skype ID so that we can contact you 2 Delete your current profiles and start with the Default settings on the encoder and decoder and avoid changing any Advanced Settings 3 Restart the encoder using the default settings only changing the bit rate video input and destination IP address If still no input then please check the Encoder Show Msg page for errors Remember if using SDI without embedded audio you must change the Audio Video setting under the Advanced Encoding page to Video Only 4 Try sending a copy of the encoder stream to a local PC running VLC on a local area network not over the Internet 5b f you can receive the stream over your LAN using VLC but the Decoder Status page shows No Data then you likely have a firewall before the decoder blocking the traffic You must add a Port Forwarding rule on the decoder sid
38. QVidium TECHNOLOGIES INC QVidium H 264 HD Video Codecs For Broadcast and Professional Video Applications Model QVENC Encoder Model QVDEC Decoder Model QVPRO Codec User s Manual v 15 September 12 2014 Application Firmware Version 261 2011 2014 QVidium Technologies Inc 12989 Chaparral Ridge Road San Diego CA 92130 Phone 858 792 6407 Fax 858 792 9131 User s Manual v 15 QVidium H 264 HD Video Codecs Table of Contents 1 dt ele HL e VE A 1 1 ER EE E 4 1 2 Network SOLU Drees eebe ee Eege ege 4 1 3 Resetting Network Settings to Factory Defaults eeeeesseeeesresrresresrrssrissrissrissrnesn 7 1 4 Elle EE 8 1 5 Passwords and Security sse eene en nennen rnnt 9 1 6 Bleu M 9 1 7 System View QVPRO entree tenter intr ns iad entes nensi inni sint en 11 1 8 System View QVENO ecccceccceceeeeeeeeeeeeeee cee eeeaaeeeeaee entere ensi nnns sn trte entes nensis nnns entree 13 1 9 System View QVDEC en tnne entente iridia entes rens aaka diay 15 2 Simplified Encoder Configuration nnne 17 3 Complete Encoder Configuration eene 18 3 1 Configuring the Encoder Overvlew sse nennen nennen 18 3 2 Encoder Contouration enne nnne neni 18 3 3 Basic Encoding Configuration ssssssssseseseenenneee enne 19 3 4 Configuring Encoder Format and Bitrates ssssssssssseeeeenee 22 3 5 Configuring Packet Transport amp Error
39. 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 Retries and 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 Latency 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 ne
40. The default is to output a CBR stream to maintain the highest level of interoperability with third party decoders but you can change this under the Advanced Encoding profile In all cases you need to enter a desired Stream Bit Rate in the Basic Encoding profile For CBR mode the output stream will include about a 3 overhead of NULL packets to pad the stream in order to keep the output bit rate constant and at the selected value For Capped VBR and Low Delay VBR the Stream Bit Rate sets the maximum output bit rate and the encoder only uses the amount of bandwidth that it needs to encode the video content For either any of these three Stream Modes the QVPRO and QVENC will automatically set an internal Video Bit Rate by subtracting from this value the Audio Bit Rate you select and about 10 for IP packetization overhead if IP output is selected A VBR stream has the advantage of optimizing IP network efficiency by eliminating unnecessary null packets from the media stream In general the video rate may be less than this rate depending upon video content Thus a VBR stream can have large variations in bit rate but will produce a much lower average bit rate than CBR QVidium has implemented a precision packet output control and metering mechanism called Pacing under the Advanced Networking encoder profile that regulates the output timing of the IP packets to maintain a constant inter packet spacing thereby minimizing packet jitter to under
41. 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 Video Codec try clicking on Network Ping 5 Make certain that both encoder and decoder are set to the same transport 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 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 Buff
42. aces e 1 SD SDI HD SDI 3G SDI SMPTE 259M 292M 425M video input BNC connector e 1SD SDI HD SDI 3G SDI SMPTE 259M 292M 425M video output BNC connector e SMPTE 272M ABC SDI including 2 channels of embedded audio 1 AES stereo pair 4 channel support is expected in a future release 1 HDMI Input QVPRO only 1 HDMI Output QVPRO and QVDEC 2 3 5mm mini phono inputs on QVENC 2 3 5mm mini phono outputs on QVDEC S PDIF input on QVENC output on QVDEC 1 Composite CVBS on QVENC and QVDEC 1 S Video input Y C on QVENC Transport Stream Bitrate Audio amp Video e 160 Kbps to 30 0 Mbps encoding UDP IP output for IP Transport mode Audio MPEG 1 Layer Il audio encoding ISO IEC 1 1172 3 Layer 2 standards compliant MPEG2 and MPEG4 AAC audio encoding Stereo bit rates 56 64 128 192 256 amp 384 Kbps Sampling rates non SDI input 32 KHz 44 1 KHz and 48 KHz SDI and HDMI HD or SD embedded audio at 48 KHz 20 bit Up to 4 mono audio channels for encoding or decoding AC3 Pass through on QVENC and QVDEC Video e 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 60 or 50 fps progressive 1080p 1920x1080 9 30 or 25 fps interlaced 10801 1280x720 60 or 50 fps 720p HD encoding 1920x1080 50 or 60 fps p
43. an then check under System Version to confirm that you have the new firmware Copyright 2011 2014 QVidium Technologies Inc Page 10 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 1 7 System View QVPRO Front View Computer Interface ports and Indicators LAN1 LAN All indicator lights either glow green or are off Indicator Switch Description 1 SDI Glows green with active SD SDI or HD SDI input 2 HDMI Glows green when video input is a valid HDMI signal 3 Power Glows green when the power is connected and unit is on 4 Reset Various reset functions See description in manual Ref Port Description 5 USB 2 USB 2 0 Ports external storage or LCD console 6 Console RS 232 Console Interface via DB 9 Connector 7 LAN LAN1 amp LAN2 10 100 1000 Base TX Gigabit Ethernet Ports Copyright 2011 2014 QVidium Technologies Inc Page 11 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs Rear View Power Video Audio I O Connectors amp RS 232 Port AC INPUT Model QVPro Ce FE RoHS N 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 DC Power 7 VDC to 20 VDC 1 to 3 Amps alternative DC power input 4 Error Glows red for bit or format errors in SDI input stream 5 3G HD ASI Glows green to indicate SGbps or HD SDI or ASI signal on SDI input 6 SDI ASI Input SD SDI HD SDI 3
44. as an MPEG Transport Stream typically given a ts file suffix File MP4 will save the encoded stream in Apple QuickTime format Broadcasters typically store their video content in Transport Stream format Alternatively MP4 or QuickTime file format typically given an mp4 file suffix is used be Apple for iTunes video content However for MP4 the encoder can only encode as Baseline MPEG4 AVC format Starting the encoder will cause the output to continuously stream into the storage device until you either manually stop the encoder or the device fill to capacity However we would caution you against allowing the external device to fill to capacity as this could cause problems with the recorded content You can calculate how much recording time in seconds your storage device contains by multiplying the number of available bytes of storage your device contains by 8 to convert to bits of storage capacity and dividing the resulting product by the total bitrate calculated as the sum of the video bitrate and the audio bitrate times 1 02 to account for a 2 TS stream overhead Dividing this number by 3 600 give you the number of hours you can record 10 1 2 Playback The File Menu Interface Once you have content recorded on a mounted memory device playing out video clips is simple and accomplished through the File menu interface Available commands are File to list and optionally delete the files in the memory Usage to show how much o
45. ast or a unicast IP address Note For ARQ IP transport you may specify up to 4 comma separated destination IP addresses for sending copies of the output to multiple destinations For more than 4 output copies of a stream either use a multicast address and UDP or RTP transport or contact QVidium for a QVARQ TxRep QoS Proxy server 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 Copyright 2011 2014 QVidium Technologies Inc Page 23 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 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 SMPTE 202
46. ate 200000 Stream Mode Capped VBR Video Encoding H264 Video Filtering On Audio Bit Rate 64000 Video Frame Rate Half Audio Encoding MPEG1 Layer2 Video Resolution CIF Audio Sampling Rate 48000 Copyright 2011 2014 QVidium Technologies Inc Page 66 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 13 5 Appendix E Technical Specifications Below is a summary of the specifications common to the QVENC QVDEC and QVPRO meant as a general guide only For the must up to date and more complete specs please see the datasheet for the relevant model QVidium product at http www qvidium com For video input and encoding the specs are only relevant to the QVPRO and QVENC For video output and decoding the specs are only relevant to the QVPRO and QVDEC Specifications Network Interface e EEE 802 3 1000 100 10 Base TX Gigabit Ethernet RJ 45 1 port QVENC QVDEC 2 ports QVPRO IP Network Stream Conditioning amp Error Correction EC e QVidium patented ARQ error correction e SMPTE 2022 ProMPEG Forward Error Correction Release 3 2 Annex B e QVidium packet pacing Network Protocols e IP Encapsulation RTP UDP IP and UDP IP IETF DiffServ and IEEE TOS compliance IGMP v 3 Multicast SNMP v 2 traps RTSP RTMP and HLS with EVOstream option on QVENC QVPRO and QVSD DHCP client Copyright 2011 2014 QVidium Technologies Inc Page 67 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs Audio Video Interf
47. ble 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 2011 2014 QVidium Technologies Inc Page 43 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs System Management 8 1 Access Configuration The H 264 HD Video 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 root using the password root E svetem nome ovr System Management Configuration License Encoder Decoder HTTP Web Management Port currently at Port 80 status is Enabled Transcode Management web admin port default 80 o TT Configure Password WEB http Access Enable Disable Get v1 MIB Get v2 MIB Secure Shell ssh TCP Port 22 Current status Enabled SNMP Traps een
48. 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 Note CodesManager may not work when the Ethernet cable is connected directly between the PC and the QVidium product as it requires connection through a switch to multicast the identification packets Also you may need to disable network adapters other than the Ethernet network adapter such as any WiFi adapters 9 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 115 200 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 USB Flash Stick Method Go to http www qvidium com reset copy the autorun file on a USB flash and plug flash into QVPRO This will reset all IP network settings File must be autorun and not aut
49. can specify both an independent UDP IP destination address and an independent port number for this copy of the output stream WARNING DO NOT ENTER THE SAME IP ADDRESS AS THE DESTINATION IP ADDRESS Doing so will send two conflicting streams to the decoder PLEASE LEAVE THIS IP ADDRESS FIELD BLANK UNLESS YOU INTEND TO USE THIS FEATURE ProMPEG FEC optional For legacy compatibility the QVPRO can add ProMPEG Forward Error Correction Release 3 2 Annex B part of the SMPTE 2022 standard to the output stream as an alternative to ARQ These settings allow for setting of the FEC parameters Because ARQ is feed back based it is significantly more effective than FEC Copyright 2011 2014 QVidium Technologies Inc Page 28 of 71 User s Manual v 15 Cvidium System License YvEncode Start Profiles Status Monitor Clear Stats Diagnostics Show Msg Clear Msg Show Log Clear Log Bitrate Volume Hue Contrast Brightness Saturation Sharpness Stop Transcode File Management Network QVidium H 264 HD Video Codecs System Name QVEnc Encoder Encoder Profile Press here for Help Profile Name Default Encode Basic Advanced Encoding Advanced Networking Network TS packets per IP packet H B Use Bandwidth Ceiling OYes No TOS Type of Service 0 Send SAP announcement OYes No SAP Session Name QVidium Codec Insert Metadata Oves No
50. chnical 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 2011 2014 QVidium Technologies Inc Page 57 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 1 3 Appendices 13 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
51. ctory For example if the file on a USB Flash stick is called test mp4 then use test mp4 as the filename qvidium qvplayer I fil O video f test ts The decoder knows to automatically set the format type the resolution the bitrate and all other relevant encoding parameters Copyright 2011 2014 QVidium Technologies Inc Page 51 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 1 1 Known Problems The following problems are currently Known to exist Encoder e Scaling from 1080i input to Half D1 or CIF resolutions on the encoder in MPEG2 encoding is not supported e Glitches in the SDI input seen when SDI Error light blinks can cause problems during decoding unless ResyncSDI is enabled With ResyncSDI enabled a glitch in the SDI input will cause a brief disruption in the stream Decoder e Genlock may initially cause the output frequency to drift away from the actual frequency until the Genlock mechanism acquires a lock on the signal possibly causing some video artifacts during startup A work around is to set the Genlock setting to Strict or Off Transcoding 1 Is no longer supported but is available upon request 2 For QVENC ASI to IP amp IP to ASI only with the optional ASI daughter card 3 For QVDEC ASI input is not supported for decoding must use QVPRO 4 Support for IP to IP on the QVENC upon request Copyright 2011 2014 QVidium Technologies Inc Page 52 of 71 User s Manual v 15
52. d LAN2 on separate subnets will confuse the operating system routing and result in sporadic access or possibly complete loss of network connectivity The QVENC QVDEC and QVPRO can also be reconfigured through a web browser when you know the IP address For a new unit or one having the factory default IP settings 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 Video Codec requires user authentication to enter the web interface Starting with application firmware version 261 the factory preset username is admin and the password is preset to the serial number of your unit found on the barcode label on the back of the unit Please enter these settings when prompted to access the system NOTE Versions of the application software earlier than 261 allow you to log in with the username root with a password of root THIS HAS CHANGED STARTING WITH ALL NEW UNITS SHIPPED WITH VERSION 261 Starting with version 261 of the application software you can NO LONGER LOG IN AS USER root Instead you must log in as user admin If you updated to version 261 from an earlier version the password for user admin is still the previously set password for the admin user The default password for user admin was admin 2 Click on Configure under the Network menu on the left Y
53. der outputs a frame This is only important in Low Delay mode and allows you to further reduce the end to end latency However this delay also serves to buffer video to help the decoder handle complex video So too low a value will cause the jerky video Audio Video Normally for outputting a stream containing both audio and video leave this at Both For encoding a video input without embedded audio set this to Video Only You can also discard the video stream and only transmit audio by setting this to Audio Only Analog audio 6dB attenuate input QVENO Setting this to Yes adds 6dB of attenuation to the analog audio signal The default is No Analog audio for SDI input QVENC Setting this to Yes will embed the audio from the analog input instead of trying to use audio embedded in the SDI signal Note For SDI input without embedded audio the encoder will not start with Audio Video set to Both This must be set to Video Only for the encoder to start or alternatively on the QVENC you can Set Analog audio for SDI input toYes SD SDI Bit Rate When set to a non zero value the encoder will use this bit rate when the SDI input is standard definition SD SDI However for an HD SDI input the encoder will encode using the Stream Bit Rate from the Basic Profile This makes the encoder automatically switch bit rates when the input is switched between SD and HD without user intervention When set to zero the default this parameter is ig
54. dium H 264 HD Video Codec requires a username and password to protect access to its configuration settings This includes both Web access and Telnet or SSH access Starting with version 261 for greater Internet security the default user name is now admin and the default password is now set to the serial number for new units Starting with version 261 root login is no longer allowed NOTE For older units updated to version 261 the admin password is the kept to be the same value as was previously set by the user or the default of admin if the admin password was not set You can change the password by selecting the Password menu item under the System Menu at the upper left of the Web page For older versions of the software the username is root and the default password is roor 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 QVPRO File must be saved as autorun and not autorun txt This will reset the admin password back to the serial number of the unit You must have physical access to the USB ports on the QVPRO to use this procedure 1 6 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 to http www qvid
55. e Setting this to 608 Anc Data will allow CEA 608 closed caption data to be passed into the vertical ancillary data of the HD SDI output Setting this to 708 Anc Data will allow CEA 708 closed caption data to be passed into the vertical ancillary data of the HD SDI output Please note that when the video stream contains HD CEA 708 closed caption data then it usually also includes CEA 608 SD close caption data as well Copyright 2011 2014 QVidium Technologies Inc Page 35 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs ANC Data Line default line 9 This setting allows you to choose which video line within the ancillary data of the SDI output the decoder will use to output the close caption data Genlock By default the decoder includes an IP clock synchronization and tracking mechanism we Call genlock to keep the decoder s internal clock adjusted to track the frequency of the clock from the incoming video stream This clock tracking prevents the decoder buffer from overflowing or underflowing producing a smooth fluid video signal Genlock is enabled when the Genlock parameter is set to either Loose Normal the default setting or Strict You can disable this mechanism by setting it to Off The Strict setting limits the maximum swings in frequency that the adjustments can take with within the SMPTE 30 ppm specification but as a tradeoff it can take much longer to settle to the correct final frequency The Normal setti
56. e decoder should now start If you have multiple decoder profiles then double click on the profile you wish to start Copyright 2011 2014 QVidium Technologies Inc Page 39 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 3 When a valid video over IP stream is being received and decoded the Video Status page will show bitrate and other statistics related to the incoming video stream You can also click on Show Log to see what type of audio and video data the decoder has detected 5 4 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 Select the 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 5 5 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 Video Codec and how to configure its decoder for proper operation of these error correction mechanisms Section 5 5 1 describes the configuration of the decoder s network transport and Section 5 5 2 describes the ARQ error correction mechanisms of the QVidium H 264 HD Video Codec 5 5 1 Configuring the Decoder s Network Transport Within the Network Parameters section of the decoder profile select among ARQ RTP or
57. e default of 160Kbps actually produces the same TS Stream Bit Rate as setting the audio bit rate to 128Kbps because of size constraints for audio packet sizes that must fit within a fixed TS packet size Audio Encoding You can select among MPEG1 Layer2 and MPEG2 AAC audio encoding formats on the QVPRO and QVENC and also AC3 Pass though on SDI and AC3 Pass through on Optical for the QVENC For speech and verbal content and to maintain the highest level of 3 party compatibility we recommend the default of MPEG1 Layer 2 For high fidelity audio such as music or concerts we recommend MPEG2 AAC In addition the QVENC and QVDEC support Dolby Digital also known as AC3 pass through operation selectable via either an external S PDIF connector or embedded SDI audio AC3 provides Surround Sound 5 1 audio 5 channels plus one subwoofer channel also known as Dolby Digital Audio Sampling Rate The default is a 48KHz audio sampling rate For SDI I O 48KHz is required as part of the SMPTE 259M standard We recommend keeping this default value when using the SDI video input Higher sampling rates preserve higher audio frequencies IP Transport The QVPRO QVENC offers 3 choices ARQ RTP and UDP ARQ and RTP all output UDP IP packets with RTP headers UDP transport encapsulates the MPEG Transport Stream as the UDP IP packet payload without the RTP data header With the Evostream Media Server EMS license the QVENC supports RTSP RTMP Flash Media
58. e firewall to allow UDP traffic on port 10000 or whatever UDP port you had set on the encoder If this does not help or for other problems please see below 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 QVPRO Codec must pass Ethernet Broadcast packets If not then you can try using a cross over Ethernet cable and connecting the QVPRO codec directly to the PC If CodecManager still does not appear to find the Copyright 2011 2014 QVidium Technologies Inc Page 53 of 71 U
59. eason the QVPRO 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 i Goto http www qvidium com qvpro and download and save the QVPRO XX pkg file to a USB flash stick This file is about 9 Mbytes XX is the version number of the application software ii Go to http Awww qvidium com reset click on Reset Software and download and save the resulting autorun file to the same USB flash stick iii Insert the flash stick and wait about one minute Then power cycle the codec Copyright 2011 2014 QVidium Technologies Inc Page 47 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 1 0 Encoding amp Decoding to from Files The QVPRO QVENC and QVDEC each have two USB interfaces that allow you to connect a USB Flash stick or an external disk drive You can encode a video stream directly to a file on this storage device with the QVPRO or QVENC and you can also play back a saved file from this external storage device with a QVPRO or QVDEC You can access external storage via either
60. ecify 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 n Auto mode immediately 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 decoder s log file by clicking on
61. ecovering 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 retransmission requests ARO 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 2011 2014 QVidium Technologies Inc Page 41 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs Transcoding Available upon request Please contact QVidium Copyright 2011 2014 QVidiu
62. ective 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 Copyright 2011 2014 QVidium Technologies Inc Page 59 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 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 ignored 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
63. eene enne nnns nennen nnne 46 9 4 Re installing the Application Software sse 47 10 Encoding amp Decoding to from Files AAA 48 10 1 Web le 48 10 2 Command Line Interface 50 11 Known Problems iet teet tbe ERE et exEEE a expe RENE ERR cians 52 12 Troubleshooting amp Gupport nnne nens 53 12 1 Troubleshooting Common Problems sss 53 KEE 57 13 Appendices es te a ete dee A ee Pee bate bep eg 58 13 1 Appendix A Encoder Configuration Parameters sse 58 13 2 Appendix B Decoder Configuration Parameters sse 61 Copyright 2011 2014 QVidium Technologies Inc Page 2 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 13 8 Appendix C H 264 HD Video Codec Bitrate Limits sssssessess 65 13 4 A Appendix D Hints for Minimizing Bitrates A 66 18 5 A Appendix E Technical Specifications 67 13 6 Appendix F Product Warranty Terms and Conditions esesssssssss 70 18 7 Appendix G FCCNottcee enne entente snnt entrent 71 Note This manual describes the combined features and capabilities of QVidium s entire line of H 264 MPEG2 HD broadcast video networking products models QVPRO QVENC and QVDEC Certain features may pertain to only certain products and or options Whereas the QVPRO combines encoding and decoding into a single product the QVENC and QVDEC implement only the encoding and decoding functions respectively Thus for sections that pertain to
64. en check Encoder Show Log to see whether there are any errors 4 If the log says Video not LOCKED waiting for valid input then check whether there is embedded audio on the SDI or HDMI feed At present the codec requires an embedded audio signal to lock onto before it can start encoding 5 If you are trying to SDI video input please check under License SDI to see that you have a license key for that feature Copyright 2011 2014 QVidium Technologies Inc Page 54 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 6 If you have an HD input on HDMI QVPRO only 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 7 If you are getting error messages in the log such as Command Timed Out and you are using SDI input then check whether you have a valid embedded audio signal on the SDI input If not then under the Advanced Encoding tab on the encoder profile you MUST either set the Audio Video encoding mode to Video Only orsetthe Analog audio for SDI input to Yes 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
65. er Profile as shown in Figure 1a We strongly recommend not changing any of the advanced encoder parameters unless you have carefully read this manual and you are confident of what you are doing If you have problems with the encoder we suggest reverting to the default advanced encoding parameters by highlighting the profile you are using and clicking Default from the Profile panel Copyright 2011 2014 QVidium Technologies Inc Page 19 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs MUS sv tem name venc encoder System Encoder Profile License YEncode Press nere tor Help Start Press here for Hel Profiles Profile Name Default Encode Status Monitor Clear Stats Diagnostics Show Msg Clear Msg Show Log Clear Log Bitrate Volume Hue Contrast Brightness Saturation Meme sl Stream Bit Rate 8000000 Sharpness Audio Encoding MPEG Layer2 x Audio Sampling Rate 48000 sel Stop Transcode File Management Network Network IP Transport ARQ Y Destination IP or Multicast Address 1 SE UDP Port E ARQ Port 1000 1 Multicast Address is only valid for RTP or UDP 2004 2014 QVidium Technologies Inc All Rights Reserved Figure 1a Basic Encoder Configuration Below is a list of the basic encoding parameters and a short description for each setting Output Device The QVPRO QVENC allows you to send the encoder s output stream to
66. er 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 Copyright 2011 2014 QVidium Technologies Inc Page 55 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs e A tinny or metallic quality to the audio or a distortion 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
67. ess the Save button to save your changes 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 These changes are stored in permanent memory and will persist even after a power failure 3 2 Encoder 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 QVPRO codec the Video Input can be either SDI or HDMI However The HDMI input only works for unencrypted HD video For the QVENC the Video Input can be one of SDI Composite CVBS or S Video Y C An HD video input will automatically be scale to SD if you do not have a license installed for the HD encoding option The QVPRO QVENC codec will automatically detect and adjust for the input video resolution and format PAL vs NTSC Copyright 2011 2014 QVidium Technologies Inc Page 18 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs and HD vs SD You can also use the advanced encoding parameters Section 3 6 to scale the video resolution and frame rate The QVPRO QVENC can output the encoded video stream either as a Constant Bit Rate CBR IP stream a Capped Variable Bit Rate Capped VBR IP stream or a Low Delay Variable Bit Rate Low Delay VBR IP stream
68. f the memory has been used and how much is still available Play to bring up the interface to play a video clip Status to show the current status of the play back this is the same as Decoder Status Show Log to show the log file in case of problems and Stop Play to stop play back of a video clip Figure 7 below shows and example of the Files Usage and Play menus The Files menu lists all the files on the Copyright 2011 2014 QVidium Technologies Inc Page 48 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs drive including files that do not contain video content You can also delete files to make room for new ones While recording the Usage menu can help you determine how much space remains To play a video clip simply click on File Play then select the file you want to play by clicking once on it Next select the output resolution you desire and click the Play button above the list of files MPEG files must have a ts suffix If the file has another suffix but contains valid a MPEG TS content then you will need to change the suffix to end in ts Cum System Name QVPro System Select a file or folder from the list below to delete License Encode Decode Transcode File Files 720x576i50M2V ts 149 0M File Jan 25 21 13 Usage Fifth720p h264 m2t 34 8M File Jan 25 21 10 Se update20111102 zip 88 2M File Jan 10 07 46 Status white ts 676 0K File Jan 25 21 10 Show Log xclog txt 2 4K File Ja
69. ffer 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 Copyright 2011 2014 QVidium Technologies Inc Page 61 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 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 optional 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 sp
70. for CIF video resolution at Half Frame Rate Note Video quality is subjective and content dependent 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 Transport Stream video from the network Maximum MPEG TS bitrates MPEG 2 or H 264 30 Mbps for UDP input transport 15 Mbps for ARQ Minimum MPEG TS bitrates MPEG 2 or H 264 128 Kbps Copyright 2011 2014 QVidium Technologies Inc Page 65 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 13 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 Set the 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 Encoding tab Video Bit R
71. for the most robust video transmission with the lowest delay QVidium s ARQ Automatic Retransmission Request is a dynamically responsive 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 QVENC H 264 HD Video encoder and QVPRO H 264 HD Video codec minimize network bandwidth and loading due to the high efficiency of H 264 encoding and ARQ video transport The HD Video Codec implements MPEG4 AVC H 264 High Profile up through Level 4 1 video encoding providing advanced coding techniques in hardware such as CABAC processing not Copyright 2011 2014 QVidium Technologies Inc Page 22 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs normally found in other MPEG4 codecs In addition to Constant Bit Rate mode of operation the QVENC and QVPRO encoder also features variable bit rate VBR transport which strips out unnecessary null packets from the video transport stream to minimize network loading The QVENC QVPRO supports QVidium s patented ARQ error correction ARQ is a robust feedback based error correction that can successfully recover nearly all packet loss even in harsh network environments However because of support for CBR t
72. he QVENC QVPRO also implements SMPTE 2022 ProMPEG Forward Error Correction FEC Because the ProMPEG FEC specification does not support VBR streams you must use CBR mode when using ProMPEG FEC However as FEC cannot anticipate varying network conditions nor correct many common forms of packet loss for the most effective error correction we suggest using ARQ wherever possible SMPTE 2022 is available upon request from QVidium as an unsupported option There is no extra charge fora QVPRO or a QVENC having a permanent QOS ARQ license 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 the replacement packets ARQ shares similarities with robust packet transport protocols such as TCP
73. he encoder to restart when detecting lose of lock on the specified input signal Enable if encoder loses sync when the input is interrupted This feature is no longer necessary for the QVPRO and can be set to No Dynamic Bitrate This is an experimental that causes the operating system to limit the peak output bit rate of the Ethernet port s to a value 20 higher than the Stream Bit Rate By default the OS limits the output peak bit rate to 40 Mbps For most networks there is no need to further limit the output using this parameter and enabling this feature can cause use of the web interface and other functions to interfere with the video output Output Parameters Program PMT Video Audio and PCR PID Changing these values changes the values for the respective PIDs Service Name and Service Provider Filling in either or both of these values will cause a Service Description Table SDT to be inserted in the transport stream with the specified values File Output Parameters File Name and File Size Max Bytes These parameters only apply when writing the output stream to a file File TS and Network File When writing an unlimited continuous video stream the File Size Max parameter invokes a stream segmentation mechanism that breaks the output files into series of files each limited to the size specified by this setting This can be useful for indexing the video stream It also helps when writing to a FAT32 MSDOS file system which
74. hould 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 Edit the decoder profile Three tabbed forms together comprise the complete decoder profile These 3 forms shown in Figures 3a through 3d allow configuration of video parameters 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 5 Press the Save button to save your changes If you don t click Save then your changes will be ignored 5 2 Decoding Profile Settings The decoder profile allows you to select an input port and configure settings on 4 tabbed pages related to the Video stream the Network interface the ARQ error correction and when receiving a video stream from a video Server For the QVPRO only The Input parameter configures the decoder to either receive a video stream from an IP Ethernet port in Network mode default or from the DVB ASI input port when in ASI mode In ASI mode the Network ARQ and Server parameters are all ignored 5 2 1 Video Tab Program For an MPTS feed the Program setting allows you to select a particular program from within the stream By default the decoder selects the first program in the stream The PMT table in the transport stream lists all the programs in the stream in a particular order The Program setting lets you
75. ine 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 This allows you to dynamically and seamlessly change the encoding bitrate and format while the encoder is running The first argument is always dev qvencode1 The second argument is get videobitrate or set videobitrate BITRATE or set outputformat FORMAT Here BITRATE is the desired new bitrate in bits per second The maximum bitrate is 30000000 30 Mbps UDP only FORMAT is one of 1080159 94110801501720p59 941720p501480159 9415761501240p30 The set videobitrate command always returns VIDEO BITRATE2xxxxxxx where xxxxxx is the current bitrate The set outputformat command always returns OUTPUT FORMATzYYYXxZZZ where YYYxZZZ is the new video format Here are some examples QVPRO qvidium com qvidium qvctrl dev qvencode1 get videobitrate VIDEO BITRATE 4000000 QVPRO qvidium com qvidium qvctrl dev qvencode1 set videobitrate 2000000 VIDEO BITRATE 2000000 QVPRO qvidium com qvidium qvctrl dev qvencode1 set videobitrate 8000000 VIDEO BITRATE 8000000 QVPRO qvidium com qvidium qvctrl dev qvencode1 set outputformat 480i59 94 OUTPUT FORMAT 720x480i30 QVPRO qvidium com qvidium qvctrl dev qvencode1 set outputformat 1080i59 94 OUTPUT FORMAT 1920x1080i30 QVPRO qvidium com qvidium qvctrl dev qvencode1 set outputformat 240p30 OUTPUT FORMAT 2352x2
76. inimum end to end latencies have been measured at under 300 milliseconds To achieve a consistent and minimum latency please always start the decoder before starting the encoder If the video looks jerky in Low Delay mode then you must increase the DTS delay from PCR parameter on the encoder NOTE In most cases it is sufficient to only select Low Delay mode on the encoder and leaving Low Delay set to No on the decoder In fact we strongly recommend leaving this set to No on the decoder even when a low total latency is desired Enabling Low Delay mode on the decoder may slightly reduce the end to end delay but can often product a jerky output Video buffer size ms This parameter sets the size of an internal decoder buffer specified in milliseconds to help improve the robustness of the decoder in handling network jitter and interruptions We generally recommend setting the Video buffer size to between 200 default and 500 ms For low latency applications you can try setting it as low as 50 ms For maximum robustness you can increase this parameter to 1000 ms Audio sync offset default 0 As a system the QVENC encoder coupled to the QVDEC decoder does a good job of keeping the audio signal synchronized to the video timing However in some Systems the audio entering the encoder may have been preprocessed and delayed such as with a DolbyO AC3 encoder prior to entering the encoder This Audio sync offset control allows you to adjust
77. ipped 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 2011 2014 QVidium Technologies Inc Page 70 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 13 7 Appendix G FCC Notice D a m NOT This equipment has b for a Class A digital devi These limits are designed harmful interference when een tested and found to comply with the limits ce pursuant t
78. it output bursts to a level that most networks can handle without affecting the video stream so enabling this lower limit is generally not necessary TOS Type of Service This sets the TOS byte of the IP packet header The default is 0 Send SAP Announcement and SAP Session Name Session Announcement Protocol or SAP sends a broadcast packet so that SAP enabled decoders and viewers such as Elecard Player from www elecard com can maintain a list of currently playing video feeds to allow you to more easily manage and choose among multiple program feeds You can supply a short description of the video feed as the SAP Session Name This only works for multicast RTP streams Insert Metadata and Metadata UDP Port Metadata is user generated data that you can supply and insert into the MPEG2 Transport Stream When enabled the QVPRO will listen for UDP packets on the specified metadata UDP port and insert the payload of these packets into the MPEG2 Transport Stream Sequence OxFFFF work around This is a work around to overcome a bug in some satellite systems that might otherwise drop packets with a certain data pattern If you see unexplained packet loss at regular interals then enabling this feature might eliminate that problem Optionally output as a UDP stream This feature allows you to send a copy of the ARQ output stream as a local UDP stream This allows for local monitoring of the encoder s output including as a UDP multicast You
79. ium com qvpro 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 1 Stop the Encoder Decoder and Transcoder if any of these functions are running You can click on System Processes to see 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 Please follow the instructions on the Update web site to determine which of the pkg files you need to download and use for updating 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 Copyright 2011 2014 QVidium Technologies Inc Page 9 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 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 c
80. le the decoded video to a wide range of standard video resolutions and frame rates including up scaling an SD format to HD or converting NTSC to PAL Set the frame rate and resolution using the Output Resolution and Format pull down menu The format is in the form of XXXX i or p YYYY where XXXX is the horizontal resolution eg 1080 corresponding to 1920x1080 resolution or 720 corresponding to 1280x720 resolution etc The letter i or p signifies either Interlaced or Progressive format YYYY is the field rate eg 59 94 fields per second for the standard NTSC 29 97 frames per second or 50 fields sec for PALs 25 fps Please note that the frame rate is one half of the field rate for interlaced video so that a field rate of 59 94 for interlaced video corresponds to a frame rate of 29 97 frames second Copyright 2011 2014 QVidium Technologies Inc Page 34 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs Low Delay default No The QVPRO QVDEC now includes a Low Delay mode that minimizes the glass to glass latency from the encoder input to the decoder output when Low Delay is selected on both a QVidium QVENC QVPRO or QVSD encoder and a QVDEC or QVPRO decoder Low Delay mode on the encoder violates some of the usual MPEG buffering rules on the encoder in order to minimize video latency Therefore it may not work with third party decoders but requires another QVidium decoder to properly decode the video stream M
81. m Technologies Inc Page 42 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs Importing Exporting amp Resetting Profiles Under the Profiles menu of the Encoder Decoder and Transcoder sections 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 Video Codec to another H 264 HD Video Codec or for resetting the configuration settings to a known state To export a profile from the Web browser interface highlight the desired profile using a single click then click on Export to open 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 create a new profile that configures that second codec specifying the file you had just used to save the configuration of the first codec Default will reset the configuration settings for the selected profile in the Encoder Decoder or Transcoder depending upon which Profile 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 trou
82. 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 second for NTSC and 25 fos 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 Video Encoding The H 264 HD Video Codec converts a digital SDI or HDMI video input 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 MP 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 QVPRO codec incorporates High Profile Level 4 0 to 4 1 MPEG4 AVC part 10 video encoding This nearly always
83. n 18 19 56 Name Size Type Date Modified Stop Play Qdidium System Name QVPro System License Encode Decode Transcode File Files Usage Copyright 2011 2014 QVidium Technologies Inc Page 49 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs System Select a file from the list below to play License Encode Decode Transcode Output 10805994 YFile EE Files Name Size Type Date Modified Usage MME 750x576i50M2V ts 156255824 File Jan 25 21 13 Remote Dir white ts 692216 File Jan 25 21 10 Play Figure 7 Screen shots from Files Usage and Play menus 10 2 Command Line Interface 10 2 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 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 cd You can the
84. n issue the unmount command umount media sda1 After this command successfully completes 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 sdbY where X and Y are partition numbers starting with 2 and incrementing up to the number of partitions on that storage device 10 2 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 ca to the mount external storage directory and then run qvplayer To encode to a file run the following command qvidium qvplayer I input source O file o output file name Copyright 2011 2014 QVidium Technologies Inc Page 50 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs The input source can be SDI HD SDI 3G SDI or HDMI The encoder automatically detects the input video resolution whether it is PAL or NTSC and whether the inpu
85. nd Sound 3 Analod Audio 3 5 mm stereo mini phono output jacks for channel 1 2 and 34 audio 4 CVBS Output Composite SD analog video output PAL or NTSC 5 SDI Output SD SDI HD SDI and 3G SDI output with embedded audio 6 HDMI OUT HDMI HD Output Note Serial number not shown is located above S PDIF optical connector Important Safety Information e For PLUGGABLE EQUIPMENT the socket outlet shall be installed near the equipment and shall be easily accessible e CAUTION The QVDEC Codec coniains 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 2011 2014 QVidium Technologies Inc Page 16 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 2 Simplified Encoder Configuration QVENC and QVPRO Only The encoder is configured and operated from a web browser These settings are stored in non volatile flash memory allowing the QVPRO to recover after a power failure This section serves as a simplified Quick Start guide for fast and easy configuration of the encoder For mode complete control of the encoder and access to the full range of encoder functionality please see Section 3 Complete Encoder Configuration 1 Enter http lt IPAddress gt encode where lt IPAddress gt is the IP address of the QVidium QVPRO that you want to configure Fo
86. ng is faster to settle than Strict but the frequency can change by as much as 100 ppm Excessive packet loss can disrupt the ability of the Genlock mechanism to track the clock In rare circumstances such excessive packet loss can cause the genlock mechanism to incorrectly estimate the video clock frequency and result in the decoder losing color sync Disabling Genlock by setting it to Off forces the decoder to just rely in the internal free running crystal oscillator within the decoder and disables it from tracking the clock in the input video stream Although this crystal oscillator is very accurate even small frequency differences between the clock of the input stream and the crystal oscillator in the decoder can build up over time After a period of time usually between 6 and 24 hours the accumulated phase difference due to this small frequency difference can cause the buffers in the decoder to overflow or underflow thereby causing occasional frame loss Error Handling default restart Severe packet loss and mal formed MPEG data may cause the decoder to pause or stall A software watchdog timer guards against these decoder error conditions and to Restart or Reboot the decoder depending upon the Error Handling setting to insure 24 7 operation Check Audio Buffer default Yes This setting enables or disables a failsafe mechanism that responds to the the audio buffer going empty Excessive unrecovered packet loss or jitter from the
87. nored and the encoder will use the Stream Bit Rate specified in the Basic profile regardless of the input signal resolution Audio Channels By default the encoder encodes a single stereo pair 2 audio channels However setting this to 4 will cause the encoder to encode 2 stereo pairs 4 audio channels Fixed Audio PES Setting this to Yes can reduce the bit rate overhead Because this feature has not yet been thoroughly tested we recommend using the default value of No unless you must minimize the encoder s the output bit rate Video Filtering Enabling this pre filter to the video input may improve encoding efficiency For the most accurate color rendition we recommend disabling this filter The default is On Video Sharpness Allows you to adjust the encoded video sharpness Video Frame Rate and Resolution 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 D1 Half CIF QCIF Progressive Output Setting this to Yes will cause the output stream to progressive scan even if the input was interlaced This may improve the video quality for lower resolution video Video Aspect Ratio This sets a bit in the video stream to tell the display device what output aspect ratio to display Copyright
88. o listen for a start packet from the decoder On a QVPRO 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 Note In server mode you must use ARQ for the IP Transport and use a different port for the ARQ port than for the UDP port Copyright 2011 2014 QVidium Technologies Inc Page 32 of 71 5 Decoder Configuration and Operation QVDEC and QVPRO Only 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 5 1 Decoding Configuration and Web Interface To configure the decooder 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 QVPRO Only Unless you have the BiDirectional feature installed make certain that the encoder is stopped as explained in Section 4 1 before starting the decoder 2 Select the Profile menu option underneath the Decoder menu For a new decoder or if you have not saved any decoder profiles yet click on New or Import to create a new decoder profile 3 Highlight the desired decoder profile and either double click it or click Edit to modify it To reset a profile to factory defaults click on Default A Decoder Profile interface s
89. o part 15 of the FCC Rules to provide reasonable protection against th quipment is operated in a commercial environment This equipmen frequency energy and if n instruction manual may ca communications Operation likely to cause harmful in required to correct the in t generates uses and can radiate radio ot installed and used in accordance with the use harmful interference to radio of this equipment in a residential area is terference in which case the user will be Copyright 2011 2014 QVidium Technologies Inc terference at his own expense Page 71 of 71
90. o 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 2011 2014 QVidium Technologies Inc Page 45 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs Codec Manager amp System Resets 9 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 www qvidium com CodecManager will detect any QVidium Video Codecs Encoders and Decoders 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 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
91. or LAN2 6 Console RS 232 Console Interface via DB 9 Connector 7 LAN LAN1 autosensing 10 100 1000 Base TX Gigabit Ethernet Ports 8 DC Power Alternate DC power input 7 20 Vdc Note DC Power input can be used simultaneously with AC input as an emergency backup or by itself Copyright 2011 2014 QVidium Technologies Inc Page 13 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs Rear View Power Video Audio I O Connectors amp RS 232 Port Model QVEnc Cod ns Ref Component Description 1 AC Power Auto sense AC power input 100 240 VAC 250 150 mA 50 60 Hz 2 ASIInput Optional ASI Input with indicator LEDs for ASI daughtercard 3 ASI Output Optional ASI Output for ASI daughtercard 4 Y C S Video S Video analog video input NTSC and PAL 5 CVBS Composite Composite analog video input NTSC and PAL 6 Audio Inputs 3 5 mm analog audio inputs for channel 1 2 and stereo input pairs 7 S PDIF Optical digital audio input fo AC3 Dolby Digital audio 8 SDI Input SDI video input auto detects SD SDI HD SDI and 3G SDI input 9 3G HD SD Glows green to indicate 3Gbps HD SDI or SD signal on SDI input 10 Error Glows red for bit or format errors in SDI input stream Note Serial number not shown is located above Y C and CVBS connectors Important Safety Information e For PLUGGABLE EQUIPMENT the socket outlet shall be installed near the equipment and shall be easily accessible e
92. orun txt 9 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 QVPRO 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 115 200 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 QVPRO codec like a PC is a Copyright 2011 2014 QVidium Technologies Inc Page 46 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs DCE Data Communications Equipment There is no login prompt Once connected you connect directly to a Borne shell 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 9 4 Re installing the Application Software If for some r
93. oss 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 Ethernet or IGMP v3 packets otherwise leave this field blank You can restrict the receipt of a multicast stream to a specific source IP address by entering a Multicast Source IP Address Enter an input Jitter buffer specified in milliseconds to smooth variations in packet delay and fix packet ordering problems The decoder is designed to recover from brief interruptions in the input However if you require that the decoder recover from dynamic changes in the format encoding or resolution of the input we suggest that you enable the Detect video break feature for IP Ethernet input You can set the Copyright 2011 2014 QVidium Technologies Inc Page 37 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs Detect video break limit to 10000 ms 10 seconds to minimize interruptions in the decoder We also recommend enabling Detect video break and setting the Detect video break limit to 5000 to 10000 ms 5 to 10 seconds 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 especially when the encoder is restarted with a different encoding type or resolution This can also help if you
94. ou should see a web page similar to the following network configuration web page Copyright 2011 2014 QVidium Technologies Inc Page 5 of 71 User s Manual v 15 System License Encode Decode Transcode File Management Network LAN LAN2 Multicast Ping Config Hostname Status IP Address Ping Traceroute 3 Change settings as desired and click Apply Cvidium System Name QVPro QVidium H 264 HD Video Codecs IP Address Subnet mask Default gateway Preferred DNS server Alternate DNS server 192 168 1 24 255 255 255 0 r 192 168 1 1 Configure LAN 1 You can get IP settings assigned automatically if your network supports this capability Otherwise you need to enter the appropriate static IP settings Obtain an IP Address automatically DHCP Use the following IP Address Obtain DNS server address automatically DHCP Use the following DNS server addresses 2004 2012 QVidium Technologies Inc All Rights Reserved 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 serve
95. r QVDEC decoder and QVPRO codec 1 1 Overview QVidium s collection of broadcast video network products includes the QVENC HD H 264 video encoder and its corresponding QVDEC decoder These products are derived from QVidium s original QVPRO HD Video Codec currently available only by special order The QVENC and QVDEC use the same video processor and same firmware as the QVPRO H 264 HD Video Codec The QVPRO 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 QVENC includes the encoding and transcoding capabilities of the QVPRO However while the QVPRO has SDI and HDMI inputs the QVENC keeps the SDI HD SDI 3G SDI interface but replaces the HDMI input with Composite and S Video inputs It also adds two pairs or analog audio inputs and an S PDIF input for AC3 Dolby Digital audio The QVDEC implements the decoding functionality of the QVPRO However in addition to the SDI HD SDI 3G SDI and HDMI outputs it also adds a Composite video output 2 pairs of stereo analog audio outputs and an S PDIF output for AC3 audio All of these QVidium video networking products include QVidium s patented advanced ARQ Error Correction and clock synchronization In addition they also include the option of
96. r button then you should try connecting to the other LAN port on the QVPRO If you still do not see the QVPRO then we suggest either resetting the network interface using the USB stick method below or via the RS232 serial port USB Flash Memory Stick Using a USB memory stick you can reset all of the network settings on the QVPRO to their factory default values Go to http www qvidium com reset copy the autorun file on a USB flash and plug flash into QVPRO About 30 seconds after plugging the USB stick into one of the two USB ports on the QVPRO the QVPRO should be reset to all of its factory default IP network settings Please make certain that you save the autorun file as simply autorun Do not add any suffixes For example saving the file as autorun txt or autorun exe will not work Most new USB flash sticks are preformatted as FAT or FAT32 This is fine and should work However if your USB stick has multiple partitions or was reformatted to some other file system we would recommend reformatting the USB stick as FAT or FAT32 The autorun file must be on the top level of the memory device in cannot be located within a folder RS232 Console Port 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 to their factory defaults connect a PC running a terminal emulator such we Hyperterm or TeraTerm The serial port settings should
97. r example http 192 168 1 23 encode if using the default address Use username encode and the password for the admin user default admin You can change this password from the main System Password menu 2 Select the Video Input SDI or HDMI for QVPRO SDI Composite or S Video for QVENC Enter the desired Stream Bit Rate We recommend 4000000 for SD and 8000000 for HD video Enter the IP address of the decoder for the Destination IP address Enter the UDP port We recommend 10000 3 Confirm that the input is active and connected and that the appropriate Link Light is lit on the front and then click on Start For troubleshooting or verifying that the encoder has started properly please log in to the main codec control menu using the instructions in the next section From that main codec control menu you can click on Encoder Status to check the outgoing bitrate If you suspect a problem then please click on Encoder Show Log Copyright 2011 2014 QVidium Technologies Inc Page 17 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 3 Complete Encoder Configuration QVENC and QVPRO Only NOTE Although the basic encoding functionality of the QVPRO and QVENC are the same the QVENC includes some additional capabilities and improvements not available in the QVPRO Screenshots in this chapter are taken from the QVENC and may include some settings not found on the QVPRO You can configure and operate the encoder from
98. r to assign a predetermined IP address Copyright 2011 2014 QVidium Technologies Inc Page 6 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 1 3 Resetting Network Settings to Factory Defaults In case you are not able to connect to the QVENC QVDEC or QVPRO through the network port s we have provided 3 different mechanisms for resetting the IP addresses and network settings through CodecManager via a USB flash memory stick with the reset autorun script on it and through the RS232 console serial port Any one of these 3 methods we describe in this section will allow you to recover in case the IP address was changed or set to DHCP and you do not know its current value CodecManager If you have a Windows PC or a Mac running a PC emulator you can download and run the QVidium application CodecManager to change or set the IP address for LAN1 or whatever port is configured as the multicast port You can download CodecManager from the Support page at http www qvidium com If you have more than one network adapter on your PC you may need to select the proper Network Interface from the pull down control in the lower left corner of the CodecManager application Also because CodecManager relies on low level Ethernet level multicasts we recommend having both the QVPRO and your PC connected through a switch and not via a direct Ethernet cable If you do not see the QVPRO on CodecManager even after clicking on the Discove
99. rogressive 1920x1080 9 25 or 30 fps interlaced 1280x720 25 or 30 fps progressive NTSC 720x480 352x240 SIF resolution PAL 720x576 352x288 CIF resolution Multiplexing Format MPEG 2 Transport Stream RTMP and MP4 available with Evostream add on Encode and Decode Line 21 Closed Captioning EIA 608 only Encode and Decode VANC Closed Captioning CEA 608 and CEA 708 Video Up Down Scaling and Frame rate conversion for decoding Video Down Scaling for encoding and transcoding Minimum End to end latency QVPRO QVENC to QVPRO QVDEO 300 ms Closed Captioning e EIA 608 on Line 21 for QVENC and QVDEC Composite and SDI and QVPRO SDI only e CEA 608 and CEA 708 Vertical Ancillary Data VANC on SDI input for QVENC encoding e CEA 608 and CEA 708 VANC on SDI output for QVDEC decoding Serial Interfaces e 1DB 9 RS 232 Console Interface e 1DB 9 RS 232 with VISCA PTZ support and for future expansion QVPRO only e 2USB 2 0 Ports for video storage 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 150 mA 50 60Hz e DC Power Input 7 VDC 3 A max to 20 VDC 1 A max e Auto sensing AC power adapter included Mechanical see relevant datasheet e Unit Weight 4 Ibs e Rack mount bracket up to 2 units in 1 RU Copyright 2011 2014 QVidium Technologies Inc Page 68 of 71 User s Manual v 15 QVidium H 264 HD
100. ser s Manual v 15 QVidium H 264 HD Video Codecs QVPRO 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 QVPRO codec will output broadcast Ethernet packets back to CodecManager on LAN1 However these multicast discover packets may go out on LAN if selected as the multicast interface 5 Open a shell window On Windows select Start Run and type cmd 6 Clear the ARP cache by typing arp d and hit Enter 7 Try pinging the system by typing ping 192 168 1 23 8 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 QVPRO It will then reset all the network settings back to the defaults 192 168 1 23 Cannot Receive Encoded IP Packet Stream at Decoder 1 On the encoder check that is is powered on and check the Encoder Status page to make certain that the encoder bitrate is non zero It the bitrate is zero then go to the next step to get a valid output packet stream
101. t is High Definition HD or Standard Definition SD video For example to encode an SDI input to an MPEG2 TS output file called test ts type qvidium qvplayer I sdi O file o test ts The output video can be saved either as an MPEG Transport Stream TS which is the default or as an MP4 Apple Quicktime output format For MP4 format add an m mp4 option to the example above Simply leaving off the m parameter will use the default MPEG 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 10 2 3 Playing Video From a File To decode and play out a stored file ca 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 dire
102. the decoder Copyright 2011 2014 QVidium Technologies Inc Page 60 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 13 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 QVPRO and QVPRO LITE you can choose either Network or ASI 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 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 MP
103. the web interface or a command line interface You can access external storage via the command line interface in one of 3 ways 1 through the RS 232 Console port 115 2 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 10 1Web Interface 10 1 1 Recording Encoding to a File You can configure an encoder profile to record to a mounted USB external storage device such as a USB Flash stick or disk drive However this attached storage must be formatted with a Microsoft compatible format such as FAT FAT32 or NTFS You must use the command line interface described below for Linux compatible memory formats Simply plugging in the memory device will cause it to be automatically mounted To be certain that the USB device is properly mounted and to see how much capacity is available for recording just click on Usage in the USB menu see below You should wait a few seconds after plugging in the USB device before clicking on Status or starting the encoder to record a file in order to give the system time to mount the device As we describe in Section 2 2 your choices for output device are Network ASI File TS or File MP4 Selecting File TS or File MP4 will record the encoder output to a file on a mounted USB storage device File TS will save the encoded stream
104. the audio timing relative to the video to compensate for possible lip synchronization problems by a maximum of 500 ms Note The second stereo pair of audio channels channels 3 and 4 may have a small offset relative to the first stereo pair channels 1 and 2 from the encoding on the QVENC This control cannot help with that offset and at present there is no way to correct for this small offset between the first and second stereo audio pairs Audio output default 2 channels The QVDEC like the QVENC is capable of handling up to 4 individual audio channels or a DolbyO AC3 stream However you must use this control to select whether to decode 2 or 4 audio channels or to treat the audio stream as a Dolby AC3 stream and pass through the audio to the output without any processing Audio PID default 0 Normally the QVDEC will select and decoder the first audio stream it sees in the input stream However for streams with multiple audio channels you can use this control to select a different audio stream to decode by specifying the PID Program Identifier for the audio stream you with to output Closed Captions default None Setting this to Line 21 will allow CEA 608 closed caption data to be passed into line 21 of the composite and SDI outputs SDI Captions default None Setting this to 608 Anc Data will allow CEA 608 closed caption data to be passed into the vertical ancillary data of the SDI output HD SDI Captions default Non
105. 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 to insure that the decoder never runs out of video or audio data despite variations in CPU processing and packet arrival times Copyright 2011 2014 QVidium Technologies Inc Page 40 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 5 5 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 ji
106. tion notes on the Support page at www qvidium com provide further details You must set the Server Type to None default when not connecting to a QoS Proxy Server nor connecting to an RTMP FlashMedia stream or RTSP web camera 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 Server Type Select type of server None default QVidium HTTP for pulling in streams from uTube for example or with Evostream add on RTMP or RTSP 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 idium System Name QVDec Decoder System Decoder Profile License Decode Press here tor Help Start Press here for Hel Profiles Defa Zen Profile Name Default Monitor Clear Stats Server Type None E IP Address RTMP RTSP HTTP settings Show Msg Clear Msg Show Log Clear Log Stop as asm File Management Network QVidium Server settings Echo port 2004
107. to dynamically optimize video quality over such bandwidth constrained networking links Note At present this feature is only supported for VBR variable bit rate streams Copyright 2011 2014 QVidium Technologies Inc Page 30 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 4 2 1 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 gt 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 BITRATEzxxxxxxx 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 BITRATE 2xxxxxxx 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 cqgi 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 cqi VIDEO_BITRATE 9000000 wget q O http root root 192 168 1 23 cgi bin encoder_bitrate2 cgi VIDEO BITRATE 500000000 VIDEO_BITRATE 25000000 4 2 2 Command l
108. tter 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 manual mode Round Trip Time Number Retries and Burst Drop time In automatic mode the system automatically measures and calculates the Round Trip Time and Number Retries Automatic mode only uses three parameters Target Latency and Burst Drop time and Robust mode n 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 The Burst Drop delay can 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 Robust Mode can also be selected for Auto mode of operation When selected checked a minimum of two tries will be attempted for r
109. tworks 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 Copyright 2011 2014 QVidium Technologies Inc Page 62 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs 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 same port number at both the encoder and the decoder Copyright 2011 2014 QVidium Technologies Inc Page 63 of 71 Server Parameters Note This section only describes connection to a QVidium Proxy Server For a connection to an RTMP stream or RTSP video device you will need to purchase the Evostream add on Applica
110. uence 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 missing 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 3 5 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 3 6 Configuring Advanced Video Encoding Profiles The encoder has a set of advanced configuration settings configurable from the Advanced Encoder Profile tab as shown below in Figure 1b and from the Advanced Network Profile tab as shown in Figure 1c The Advanced Encoding tab divides these parameters into 4 sections Audio Video Encoding parameters Control parameters Output parameters and File parameters All advanced IP Ethernet network settings are located under the Advanced Network tab Warning Some combinations of parameters can cause the
111. urchaser 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 D 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 sold the product A representative will authorize the exchange or repair of the defective item Products must be sh
112. using industry standard ProMPEG FEC or SMPTE 2022 for compatibility with third party products With these advanced Quality of Service QoS features the H 264 HD Video Codec can send video over nearly any network and across the world including wireless connections and the public Internet with unsurpassed video transport quality and state of the art video compression for minimizing bandwidth 1 2 Network Setup The QVPRO includes two gigabit Ethernet ports labeled LAN1 and LAN2 The QVENC and Copyright 2011 2014 QVidium Technologies Inc Page 4 of 71 User s Manual v 15 QVidium H 264 HD Video Codecs QVDEC only have one gigabit Ethernet port LAN1 Although on the QVDEC and QVENC you can add a second Ethernet interface by attaching an Apple USB Ethernet Adapter Part Number MC704ZM A The factory preset IP address for LAN1 is 192 168 1 23 and for LAN2 is 192 168 10 23 Both ports have a Netmask of 255 255 255 0 By default only LAN1 can send or receive multicast packets but you can change this in the Network Multicast menu 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 9 of this manual for configuration using the CodecManager application WARNING If you change the IP addresses of LAN1 or LANZ you must make certain that they remain on different subnets Failure to keep the IP addresses of LAN1 an

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