Hello,
I would like to be able to signal a video channel using SIP. I have seen in SDP how to signal the codec, the bandwidth and the rtpmap but I don't see how to signal frame rates, frame sizes, and other negotiable capabilities of a video codec. Can you point me to how this is done? I see that in SDP, I can use the "a" for attributes but are there some standard identifiers that are being used by the industry or described in some rfc for how to do this? Thank You, Eugene Christensen Sorenson Communications
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