Avaya Aura 5300 User Manual page 90

Advanced setup
Use this procedure to choose MPEG4 as the preferred video CODEC.
Procedure
1. Click Preferences >Video > Configure.
The Video Configuration window appears.
2. Select MPEG4 Codec from the Preferred Video Codec drop-down menu.
If your video camera does not support a video capture format that is usable by the MPEG4
CODEC, then the MPEG4 CODEC does not appear as a choice.
3. Select one of the Codec Quality Settings or click Config.
Use custom video configurations with care. The combination of a large video image size,
high quality CODEC setting, and high Frames Per Second (FPS) produces video
transmission rates over 1 Mbit/s and erodes network and PC performance. Avaya
recommends that you use one of the pre-defined video configurations.
4. Use the guidelines in the table to adjust the custom video configuration.
MPEG4 custom video
configuration
Output video bitstream (rate)
Key frame interval
Video fluidity
Enable four motion vectors
per macroblock.
Improve Resistance to Packet
Loss
Dynamic Resolution
Conversion
October 2017
Description
This specifies the maximum bitrate that the encoder transmits, not
including header information. Drag the slider or enter a value in the
text box.
This value allows you to change the interval of sending keyframes,
which could reduce the bandwidth requirement at the cost of quality.
The default value is 8 (medium, high, and very high quality
settings), and you can specify values between 1 and 300.
This value allows you to improve the frame rate of the video at the
cost of quality. A lower value for Video Fluidity produces more
choppy video motion, with a higher image quality for each frame of
video. The default value is 100 (all quality settings).
Use this option to specify four separate motion vectors for four 8x8
macroblocks. This provides better motion quality in video that
contains compound motion. May require slightly more bitstream for
the extra information. If this option is disabled, you can specify only
one motion vector for each 16x16 macroblock.
This options improves packet loss resistance by enabling
resynchronization markers in the video, which accelerates recovery
from transmission issues. The video packet header also uses
Header Extension Code to improve error resiliency. Use this setting
to improve video quality on connections with high packet loss.
This option adapts temporal resolution depending on video content
and circumstances in real-time. This also helps error conditions,
since error-related artifacts become less noticeable because the
errors are more spread over the bitstream.
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