[FFmpeg-trac] #7068(ffmpeg:new): ffmpeg SDP file generation : incorrect header

[FFmpeg]

#7068: ffmpeg SDP file generation : incorrect header
--------------------------------+----------------------------------
             Reporter:  chacha  |                    Owner:
                 Type:  defect  |                   Status:  new
             Priority:  normal  |                Component:  ffmpeg
              Version:  4.2     |               Resolution:
             Keywords:  sdp     |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |
--------------------------------+----------------------------------
Changes (by juannm):

 * cc: oneorjuan@… (added)
 * version:  unspecified => 4.2
 * component:  undetermined => ffmpeg


Comment:

 I'm adding the full command line output in an attempt to make this a valid
 ticket, although for this specific case it shouldn't really be needed.
 Anyone who has ever seen an SDP message ever, knows that starting with
 "SDP:" is not valid.

 Test command:

 {{{
 ffmpeg \
     -re \
     -i video.mp4 \
     -an \
     -c:v copy \
     -f rtp \
     -sdp_file video.sdp \
     "rtp://127.0.0.1:5004"
 }}}

 Generated SDP file:

 {{{
 SDP:
 v=0
 o=- 0 0 IN IP4 127.0.0.1
 s=No Name
 c=IN IP4 127.0.0.1
 t=0 0
 a=tool:libavformat 58.29.100
 m=video 5004 RTP/AVP 96
 a=rtpmap:96 H264/90000
 a=fmtp:96 packetization-mode=1; sprop-parameter-
 sets=Z0LAH9kAUAW7ARAAAD6QAAu4CPGDJIA=,aMuMsg==; profile-level-id=42C01F
 }}}

 Offending line:

 {{{
 SDP:
 }}}

 Expected SDP file:

 {{{
 v=0
 o=- 0 0 IN IP4 127.0.0.1
 s=No Name
 c=IN IP4 127.0.0.1
 t=0 0
 a=tool:libavformat 58.29.100
 m=video 5004 RTP/AVP 96
 a=rtpmap:96 H264/90000
 a=fmtp:96 packetization-mode=1; sprop-parameter-
 sets=Z0LAH9kAUAW7ARAAAD6QAAu4CPGDJIA=,aMuMsg==; profile-level-id=42C01F
 }}}

 Tested version: latest available as of right now in John Van Sickle's
 website: https://www.johnvansickle.com/ffmpeg/

 Full, uncut console output generated with '-report' and provided in the
 attached file.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7068#comment:5>
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