[FFmpeg-devel] SDP file generated from ffmpeg RTP muxer does not work with DSS, why?

[habla man]

With the "SDP:" line on top, QT or VLC could attempt to "negotiate" with DSS
but disconnect eventually. Without the "SDP:" line, QT or VLC cannot connect
at all. If I try to play the /media/video/test.sdp file with FFPLAY locally,
it works BUT sometimes it doesn't. Thanks.

On Fri, Feb 27, 2009 at 7:48 PM, Limin Wang <lance.lmwang at gmail.com> wrote:

> Hi,
>
> * habla man <st3amco0ker at gmail.com> [2009-02-27 11:00:31 -0800]:
>
> > ffmpeg -re -an -i $input $res $video \
> > -flags +global_header -vglobal 1 -title "TEST" \
> > -f rtp rtp://127.0.0.1:55555 \
> > -vn $audio \
> > -f rtp rtp://127.0.0.1:44444 -newaudio \
> > > "/media/video/test.sdp"
> >
> >
> > SDP:
> > v=0
> > o=- 0 0 IN IP4 127.0.0.1
> > t=0 0
> > s=TEST
> > a=tool:libavformat 52.30.1
> > m=video 55555 RTP/AVP 96
> > c=IN IP4 127.0.0.1
> > b=AS:512
> > a=rtpmap:96 H264/90000
> > a=fmtp:96 packetization-mode=1;
> >
> sprop-parameter-sets=BgX//wbcRem95tlIt5Ys2CDZI+7veDI2NCAtIGNvcmUgNjYgcjExMTUgMTE4NjNhYyAtIEgu
> > [LENGTH CUTOFF]
> > m=audio 44444 RTP/AVP 96
> > c=IN IP4 127.0.0.1
> > b=AS:96
> > a=rtpmap:96 MPEG4-GENERIC/48000/2
> > a=fmtp:96
> >
> profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength=3;
> > config=1190
> >
> > no response from rstp://192.168.1.50/test.sdp. What's the problem here?
>
> Please remove the first line "SDP:" from your sdp file. It'll confuse
> DSS.
>
>
> Thanks,
> Limin
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