5 comments on “What I learned about H.264 for WebRTC video (Tim Panton)

  1. Regarding the mark bit, I understand that you forgot to keep the mark bit value when relaying a video packet, so it was always set to 0 in outbound. Is that correct?

  2. Yep, in classic VoIP audio the mark bit only gets used in some variants of DTMF (inband) – so my audio-heritage phono stack didn’t pass it up to the layers above or allow setting it on non DTMF packets.

  3. I enjoyed your post Tim, nice write up and deep details. People working in this level of detail will may also run into way more than 10 packets per frame when they move to HD etc, those can be 60+ packets; our team has had a lot of fun in that arena.

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