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Questions about SDP examples #16

Closed laurilo closed 7 months ago

laurilo commented 7 months ago

Q1: In Section 9.2, there is an example with an SDP mid attribute, but no grouping:

m=video 40000 RTP/AVP 96
    a=rtpmap:96 H265/90000
    a=fmtp:96 v3c-unit-header=KAAAAA==;
              v3c-parameter-set=AUH/AAAP/zwAAAAAACgIAtEAgQLAIAAUQBACWAM
              5QEDgQCAIAAAAABP8CzwAAAAAAAAAQAAAtAE/wLPAAAAAAAg=;
              v3c-atlas-data=YAEHgFA=,YgEAMAAAC/B0qcvv/Dbr/pTvb8oqfhC5J
              QVS9jn7kAQT/As9EFyrjRBcmxEQe+j5DuGbTT9mZmZAQAAAoA==
    a=mid:1

Q2: In Section 9.3, there is an example of an answer with grouping, but no SDP mid attributes:

    a=group:v3c 1 2 3 4
    m=video 50000 RTP/AVP 96
    a=rtpmap:96 H264/90000
    a=recvonly
    m=video 50002 RTP/AVP 97
    a=rtpmap:97 H265/90000
    a=recvonly
    m=video 50004 RTP/AVP 98
    a=rtpmap:98 H266/90000
    a=recvonly
    m=application 50006 RTP/AVP 96
    a=rtpmap:96 v3c/90000
    a=recvonly
laurilo commented 7 months ago

A1: I've moved this example in the proper place of the document. The example details a packed video component, without atlas media stream. Thus single media line can be used stream V3C coded bitstream and no grouping is needed.

A2: I've added mid values in the example to make it compliant with RFC 5888. This were left out of the example for brevity, but I know realize it is erroneous.

laurilo commented 7 months ago

Resolved with https://github.com/laurilo/draft-ilola-avtcore-rtp-v3c/commit/11780da5bd1f9d23b42bca258d973b0ad123e432