Re: [webrtc-pc] If a preferred codec is filtered out, does it still get assigned a PT? (#2938)

> I agree with the note. I would expand it a little bit, saying that: "NOTE: Using SDP, it is not possible to indicate in a media section with the direction "sendrecv" of an offer that you support a codec for sending that you don't support for receiving. This is a limitation of SDP. Such information should be conveyed via a side channel, outside of the SDP offer/answer negotiation."

I don't think we should talk about side channels ,outside of SDP, etc. 

I also think it is important to point out that it is not a limitation of SDP - SDP allows you to indicate direction-specific capabilities using sendonly and recvonly. It is a limitation of "sendrecv" m- lines, and the offer/answer assumption that you only need to indicate what you can receive.

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Received on Wednesday, 21 February 2024 09:24:53 UTC