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.16 March 31, 2015 Application Firmware Version 265 2011-2015 QVidium Technologies, Inc. 12989 Chaparral Ridge Road, San Diego, CA 92130 Phone 858.792.6407 • Fax 858.792.
® User’s Manual v.16 QVidium H.264 HD Video Codecs™ Table of Contents 1 Introduction .......................................................................................................................... 4 1.1 Overview........................................................................................................................ 4 1.2 Network Setup ............................................................................................................... 4 1.
® User’s Manual v.16 13.3 13.4 13.5 13.6 13.7 QVidium H.264 HD Video Codecs™ Appendix C: H.264 HD Video Codec™ Bitrate Limits ................................................. 66 Appendix D: Hints for Minimizing Bitrates.................................................................... 67 Appendix E: Technical Specifications .......................................................................... 68 Appendix F: Product Warranty Terms and Conditions ................................................
® User’s Manual v.16 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.16 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.
® User’s Manual v.16 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.16 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.16 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. Likewise, you can use Traceroute to ping every router along the route from the QVPRO to the IP or DNS address you specify.
® User’s Manual v.16 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 QVidium H.
® User’s Manual v.16 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.
® User’s Manual v.16 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.16 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.16 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.16 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.16 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.16 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.16 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.16 3 QVidium H.264 HD Video Codecs™ 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 a web browser.
® User’s Manual v.16 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.
® User’s Manual v.16 QVidium H.264 HD Video Codecs™ Figure 1a: Basic Encoder Configuration.
® User’s Manual v.16 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.
® User’s Manual v.16 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.
® User’s Manual v.16 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.
® User’s Manual v.16 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.
® User’s Manual v.16 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. 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.
® User’s Manual v.16 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.
® User’s Manual v.16 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.
® User’s Manual v.16 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.
® User’s Manual v.16 QVidium H.264 HD Video Codecs™ Figure 1c: Advanced Encoder Network Configuration. ® Copyright 2011-2015 QVidium Technologies, Inc.
® User’s Manual v.16 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 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.
® User’s Manual v.16 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.16 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 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.
® User’s Manual v.16 QVidium H.264 HD Video Codecs™ Figure 3a: Decoder profile: “Video Tab” Output Resolution and Format (default: 1080i59.94): The QVPRO/QVDEC includes a powerful video scalar that can scale 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.
® User’s Manual v.16 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.
® User’s Manual v.16 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.
® User’s Manual v.16 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.16 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).
® User’s Manual v.16 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. 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.
® User’s Manual v.16 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.
® User’s Manual v.16 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.
® User’s Manual v.16 6 QVidium H.264 HD Video Codecs™ Transcoding Available upon request. Please contact QVidium. ® Copyright 2011-2015 QVidium Technologies, Inc.
® User’s Manual v.16 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.16 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.16 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.16 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.16 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.
® User’s Manual v.16 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.16 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.16 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.16 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.16 11 QVidium H.264 HD Video Codecs™ Known Problems The following problems are currently known to exist: Encoder: Scaling from 1080i input to Half-D1 or CIF resolutions on the encoder in MPEG2 encoding is not supported. 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.
® User’s Manual v.16 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 getting video from the encoder to the decoder, follow the following procedure: 1.
® User’s Manual v.16 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 LAN2 if selected as the multicast interface. 5.
® User’s Manual v.16 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.
® User’s Manual v.16 QVidium H.264 HD Video Codecs™ 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.
® User’s Manual v.16 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.16 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.16 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.16 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.16 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.16 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.16 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 Parameters Note: This section only describes connection to a QVidium Proxy Server (or a QVENC or QVPRO with Server Mode enabled). For a connection to an RTMP stream or RTSP video device, you will need to purchase the Evostream™ add-on. Application 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.
® User’s Manual v.16 QVidium H.264 HD Video Codecs™ ® Copyright 2011-2015 QVidium Technologies, Inc.
® User’s Manual v.16 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.
® User’s Manual v.16 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.16 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.16 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.16 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 2011-2015 QVidium Technologies, Inc.
® User’s Manual v.16 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.16 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.
