Re: [webrtc-pc] setCodecPreferences, sendonly codecs and dummy codecs (#2937)

@aboba RFC 9429 is not an error. An additional context might help, but it would not be normative. RFC 3264 will still be a normative document that controls how the offer/answer works. RFC 9429 Section 4.2.6 is being misinterpreted since it is considered independent from RFC 3264. All it says is that setCodecPreferences will control the order of codecs for the m= line associated with the transceiver for the next offer or answer. It will specify in which order the codecs will be offered and in which order they will be considered when generating the answer (overwriting the offer). It does not define how certain things are implemented, such as how to return two codecs in the answer, which would be required for asymmetric codecs used for a sendrecv line. It does not control which codecs are actually used; it just adjusts the preferences for the negotiation.

We might add context to this section, but I don't know if errata is the proper process. It might be enough to fix the webrtc-pc document.

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Received on Tuesday, 23 April 2024 01:53:05 UTC