Hi, How do I announce that I have capability to support specific video codec with several parameter sets? For example: Supporting H.261 with: 1) CIF, 30fps, 256Kbps 2) QCIF, 15fps, 52Kbps
According to RFC 2327, SDP, section 6: "Up to one rtpmap attribute can be defined for each media format specified". As far as I can see, I have the following 2 options: Option 1 - duplicated media formats m=video 6794 RTP/AVP 31 31 a=rtpmap:31 H261/90000 a=fmtp:31 CIF=1/MaxBR=2560 a=rtpmap:31 H261/90000 a=fmtp:31 QCIF=2/MaxBR=520 Option 2 - duplicated media fields m=video 6794 RTP/AVP 31 31 a=rtpmap:31 H261/90000 a=fmtp:31 CIF=1/MaxBR=2560 m=video 6794 RTP/AVP 31 31 a=rtpmap:31 H261/90000 a=fmtp:31 QCIF=2/MaxBR=520 Are there any other options? Is it the right way to do it? Does SDP allow me to do it at all? Thanks, Erez _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
