[Libav-user] SDP Parsing

[Mark Kenna]

Could someone tell me if this SDP looks correct? I was under the impression
that you couldn't have more than one a=rtpmap within a m= media tag?

Note that I've taken the capture through WireShark and omitted the top parts

    Session Description Protocol
        ......
        ......
        Media Description, name and address (m): video 0 RTP/AVP 26 96
        Media Attribute (a): rtpmap:26 JPEG/90000
        Media Title (i): video stream 1 in camera 1
        Media Attribute (a): control:rtsp://74.112.34.42:554/media/1/video/1
        Media Attribute (a): x-bufferdelay:0.050000
        Media Attribute (a): mimetype:string;"video/JPEG"
        Media Attribute (a): rtpmap:96 H264/90000
        Media Attribute (a): fmtp:96 packetization-mode=1;
profile-level-id=420029;
config=0000000167420029e2900800c3602dc0404069078911500000000168ce3c80;
sprop-parameter-sets=Z0IAKeKQCADDYC3AQEBpB4kRUA==,aM48gA==;
        Media Title (i): video stream 1 in camera 1
        Media Attribute (a): control:rtsp://74.112.34.42:554/media/1/video/1
        Media Attribute (a): x-bufferdelay:0.050000
        Media Attribute (a): mimetype:string;"video/H264"


It looks as if this SDK is trying to say that the media track could be
MJPEG or h264. FFmpeg is reading the codec as MJPEG and then failing when
the media data delivered is actually h264. I just need to know if this is a
valid SDP and whether there could be a bug in FFMpeg.

Thanks,
Mark.
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