Recommended Settings for Streaming - 2020.2 English

H.264/H.265 Video Codec Unit v1.2 Solutions LogiCORE IP Product Guide (PG252)

Document ID
PG252
Release Date
2020-11-24
Version
2020.2 English

The following are the recommended settings for streaming:

  • Low-latency RC with low-delay-p gop-mode, gdr-mode=horizontal, periodicity-idr=Picture height in MBs
  • Low-latency RC with low-delay-p gop-mode and periodicity-idr=twice the framerate.
  • CBR RC with low-delay-p gop-mode, gdr-mode=horizontal, periodicity-idr=Picture height in MBs
  • CBR RC with low-delay-p gop-mode and periodicity-idr=twice the framerate, cpb-size="1000”

For AVC, 1 MB=16x16 pixels and for HEVC, 1MB=32x32 pixels. You have to calculate picture height in Mbs= roundup(Height,64)/#Mb rows.

  • If you are not using buffer-size property of udpsrc, then you must set it manually using sysctl command as per their network bandwidth utilization and requirements.

    -> sysctl -w net.core.rmem_default=60000000

  • VBR is not a preferred mode of streaming.