tree 60e3591bf12ee1e8f793fa4ef9cc7fde8ab1a35d
parent 3fff83d02a9fb7c549a8cfe093742b5bd15a0532
author Philipp Hancke <phancke@microsoft.com> 1708439294 +0100
committer WebRTC LUCI CQ <webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com> 1708931505 +0000

Add nonstandard x-google-per-layer-pli fmtp for enabling per-layer keyFrames in response to PLIs

which needs to be added to the remote codecs a=fmtp:

This also forces SimulcastCastEncoderAdapter to avoid issues with codecs that have native simulcast capability but do require synchronized keyframes.

This parameter allows for large-scale experimentation and A/B testing
whether the new behavior has advantages. It is to be considered
transitional and may be removed again in the future.

BUG=webrtc:10107

Change-Id: I81f496c987b2fed7ff3089efb746e7e89e89c033
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/333560
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Philipp Hancke <phancke@microsoft.com>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#41805}