[webrtc-encoded-transform] Pull Request: remove contributingSources from VideoFrameMetadata

fippo has just submitted a new pull request for https://github.com/w3c/webrtc-encoded-transform:

== remove contributingSources from VideoFrameMetadata ==
contributing sources are in general used by audio mixers as described in
  https://datatracker.ietf.org/doc/html/rfc6465
but are not commonly used for video.

Chrome has this in [the IDL](https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame_metadata.idl;l=17;bpv=1;bpt=0) but this is not [backed by the implementation](https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.cc;l=40;drc=8d399817282e3c12ed54eb23ec42a5e418298ec6;bpv=1;bpt=1),
Safari has a [TODO](https://github.com/WebKit/WebKit/blob/a121340322ef72e3e303af58db1c88cb23bf397d/Source/WebCore/Modules/mediastream/RTCEncodedVideoFrame.idl#L41) for it so this seems safe to remove.

See https://github.com/w3c/webrtc-encoded-transform/pull/157


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Received on Wednesday, 5 October 2022 08:18:26 UTC