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.13 July 1, 2013 Application Firmware Version 226 ® 2011-2013 QVidium Technologies, Inc. 12989 Chaparral Ridge Road, San Diego, CA 92130 Phone 858.792.6407 • Fax 858.792.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ Table of Contents 1 Introduction............................................................................................................. 4 1.1 Overview ........................................................................................................... 4 1.2 Network Setup ................................................................................................. 5 1.3 Resetting Network Settings to Factory Defaults ....................
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 10.1 Web Interface................................................................................................. 44 10.2 Command-Line Interface ............................................................................. 46 11 Known Problems ................................................................................................. 48 12 Troubleshooting & Support ..............................................................................
® User’s Manual v.13 1 QVidium H.264 HD Video Codecs™ Introduction ® Congratulations on purchasing your new QVidium broadcast video networking product. ® QVidium H.264 HD video networking products – Front View, Clockwise from upper left: QVENC encoder, 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 1.2 Network Setup The QVPRO includes two gigabit Ethernet ports, labeled LAN1 and LAN2. The QVENC and 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 3) Change settings as desired and click “Apply”. 4) If you change the IP address, you will need to change the URL in the web browser to point to the new address after clicking on “Apply”. The Network Configure panel allows you to modify the static IP address parameters and DNS server settings, or to have these settings automatically configured through DHCP.
® User’s Manual v.13 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 1.4 Ping Selecting Ping allows you to test network connectivity by sending ping packets to an address or hostname you specify. However, to use a hostname in place of an IP address, you must have configured at least one DNS server. ® Copyright 2011-2013 QVidium Technologies, Inc.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 1.5 Passwords and Security The QVidium H.264 HD Video Codec™ requires a username and password to protect access to its configuration settings. This includes both Web access and Telnet access. The default user name is “root” and the default password is also initially set to “root.” You can change the password by selecting the Password menu item under the System Menu at the upper left of the Web page.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 1.7 System View – QVPRO Front View – Computer Interface ports and Indicators (All indicator lights either glow green or are off.) Ref 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 5 USB 2 USB 2.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ Rear View – Power, Video/Audio I/O Connectors, & RS-232 Port 1 2 2 Ref Component 3 4 5 6 7 8 9 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 1.8 System View – QVENC Front View – Computer Interface ports and Indicators (All indicator lights either glow green or are off.) Ref 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ Rear View – Power, Video/Audio I/O Connectors, & RS-232 Port 1 2 2 Ref Component 3 2 4 5 6 7 9 8 10 Description 1 AC Power Auto-sense AC power input (100-240 VAC, 250-150 mA, 50/60 Hz). 2 ASI Input 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).
® User’s Manual v.13 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 3 USB 2 USB 2.0 Ports (external storage or LCD console or LAN2). 4 Console RS-232 Console Interface via DB-9 Connector.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ Rear View – Power, Video/Audio I/O Connectors, & RS-232 Port 2 1 Ref Component 3 4 5 6 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 Surround Sound 3 Analod Audio 3.5 mm stereo mini-phono output jacks for channel ½ and ¾ audio. 4 CVBS Output Composite SD analog video output (PAL or NTSC).
® User’s Manual v.13 2 QVidium H.264 HD Video Codecs™ Simplified Encoder Configuration (QVENC and QVPRO Only) The encoder is configured and operated from a web browser. These settings are stored in nonvolatile 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.
® User’s Manual v.13 3 QVidium H.264 HD Video Codecs™ Complete Encoder Configuration (QVENC and QVPRO Only) The encoder is configured and operated from a web browser. These settings are stored in nonvolatile flash memory, allowing the encoder to recover after a power failure. This section explains how to configure the Codec’s encoding parameters with full access to the capabilities of the encoder. 3.1 Configuring the Encoder - Overview 1.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ To record a single contiguous file larger then 4 Gigabytes, you must use an NTFS, Ext3, or networked file system. Please also note that recording to an MP4 file format limits the encoding to Baseband H.264. 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ exceed this value. However, there may be a variation in output bit rate of up to about 5% over the value you set. 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 ½ to 1/3 of the bitrate for comparable video quality versus MPEG2.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ (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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ ARQ shares similarities with robust packet transport protocols, such as TCP/IP in that both use feedback to create robust network packet transport. However TCP/IP uses a sliding window that limits the number of packets that a source can have in transit and requires a positive acknowledgement for each window of packets. This limits TCP’s throughput, especially over links with long latencies.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ At the receiver, the ARQ error correction mechanism first buffers incoming packets in a synchronized network de-jitter buffer that maintains a constant, configurable delay for incoming packets. The de-jitter buffer processes RTP sequence numbers and reorders packets as necessary to restore proper packet sequence and to buffer against erratic network delays. Its goal is to output a smooth, consistent flow of packets with increasing sequence numbers.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 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 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ Video Aspect Ratio: This sets a bit in the video stream to tell the display device what output aspect ratio to display. 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ the MPEG2 Transport Stream. 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 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”.
® User’s Manual v.13 4 QVidium H.264 HD Video Codecs™ 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 bitrate. 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.
® User’s Manual v.13 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->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_BITRATE=xxxxxxx, where xxxxxxx is the current bitrate. /cgi-bin/encoder_bitrate2.
® User’s Manual v.13 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.
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 deocoder, 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ standard NTSC 29.97 frames per second, or 50 fields/sec for PALs 25 fps). Low Delay: The QVPRO/QVDEC now includes a Low Delay mode that minimizes the “glass-toglass” 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ Figure 3a: Decoder profile: “Video Tab” ® Copyright 2011-2013 QVidium Technologies, Inc.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 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 loss in the Status display.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 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 Use Server to No (the default) when not using a QVidium server and in general when receiving a stream from an encoder. 5.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 5.5 Configuring Packet Transport & 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 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. In most cases automatic mode and the default parameters should be adequate. Of the required parameters, the first parameter, Target Latency, specifies the total delay, in milliseconds, allotted for the request, retransmission, and recovery process.
® User’s Manual v.13 6 QVidium H.264 HD Video Codecs™ Transcoding (QVENC with optional ASI daughter-card only) Available upon request. Please contact QVidium. ® Copyright 2011-2013 QVidium Technologies, Inc.
® User’s Manual v.13 7 QVidium H.264 HD Video Codecs™ Importing, Exporting, & 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.
® User’s Manual v.13 8 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. Figure 5: Management Configuration web page.
® User’s Manual v.13 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. Figure 6: SNMP Trap Configuration.
® User’s Manual v.13 9 QVidium H.264 HD Video Codecs™ Codec Manager & 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 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.
® User’s Manual v.13 10 QVidium H.264 HD Video Codecs™ Encoding & 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 the web interface or a command-line interface.
® User’s Manual v.13 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 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.
® User’s Manual v.13 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 input 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.
® User’s Manual v.13 11 QVidium H.264 HD Video Codecs™ Known Problems The following problems are currently known to exist: Encoder: 1. Lip synchronization may drift when recording large MP4 files in the current release. To avoid this problem, select TS video file format. (This issue does not affect IP streaming or MPEGTS file format.) 2. Scaling from 1080i input to Half-D1 or CIF resolutions on the encoder in MPEG2 encoding is not supported. Decoder: 1.
® User’s Manual v.13 12 QVidium H.264 HD Video Codecs™ Troubleshooting & 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 with getting video from the encoder to the decoder, follow the following procedure: 1. Check the Encoder Status page for a valid bitrate to make certain that the encoder is running.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 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. 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 1. First eliminate any network problems by connecting the encoder and decoder to the same Ethernet switch. Use CodecManager, running on a PC also connected to that switch, to verify that the IP and MAC addresses are all different. 2. Click on Defaults on the Encode and Decode sides to reset all your profile settings to their factory default values. 3.
® User’s Manual v.13 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.
® User’s Manual v.13 13 QVidium H.264 HD Video Codecs™ 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.
® User’s Manual v.13 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.
® User’s Manual v.13 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.
® User’s Manual v.13 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 & 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.
® User’s Manual v.13 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.
® User’s Manual v.13 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.
Server The parameters below ONLY pertain to the operation of the QVidium H.264 HD Video Codec™ with a QVidium QoS Proxy Server. Leave this disabled when not connecting to a QoS Proxy Server. This feature allows the decoder to initiate and receive a unicast stream from a QoS Proxy Server. You must provide the IP address and control port for the QoS Proxy Server. The decoder then sends a control packet upstream to the server when you start the decoder. Use Server: Select No to disable this feature.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 13.3 Appendix C: H.264 HD Video Codec™ Bitrate Limits Encode Bitrate Limits The video encoding bit rate limits specified below are subjective suggestions based on limited empirical testing. The QVPRO codec will allow you to enter any video encoding bitrate and will attempt to produce the best video quality it can, based on the video bit rate you set as an upper limit on the average peak bitrate.
® User’s Manual v.13 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.
® User’s Manual v.13 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ Audio/Video Interfaces: 1 SD-SDI / HD-SDI / 3G-SDI (SMPTE 259M/292M/425M) video input (BNC connector) 1 SD-SDI / HD-SDI / 3G-SDI (SMPTE 259M/292M/425M) video output (BNC connector) 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ Environmental: Operating temperature: 0 to 55o C Operating humidity: 0 to 90% R.H., non-condensing Non-operating temperature: -20 to 70o C Non-operating humidity: 0 to 95% R.H., non-condensing Regulatory: RoHS, CE, and FCC compliant Warranty: Parts and labor: 1-year ® Copyright 2011-2013 QVidium Technologies, Inc.
® User’s Manual v.13 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.
® User’s Manual v.13 QVidium H.264 HD Video Codecs™ 13.7 Appendix G: FCC Notice NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
