[FFmpeg-trac] #3222(avformat:new): RTSP (client): Fallback to TCP causes 454 Session Not Found

[FFmpeg]

#3222: RTSP (client): Fallback to TCP causes 454 Session Not Found
-------------------------------------+-------------------------------------
             Reporter:  GstBlub      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  avformat     |                  Version:  2.1.1
             Keywords:  rtsp         |               Blocked By:
  fallback tcp session               |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 The fallback mechanism to TCP when UDP times out seems to not work
 properly.  I can't get this stream to work with ffmpeg, but it works fine
 with vlc and windows media player: rtsp://strm01.novotempo.org.br
 /radionovotempo-vivo

 I always get this error: method SETUP failed: 454 Session Not Found

 If I force ffmpeg to use TCP (using -rtsp_transport tcp), it works.

 How to reproduce:
 {{{
 % ffmpeg -i rtsp://strm01.novotempo.org.br/radionovotempo-vivo
 -rtsp_transport tcp -acodec copy -vcodec copy test.file
 ffmpeg 2.1 (arm)

 ...

 [rtsp @ 0x59480] UDP timeout, retrying with TCP
 [rtsp @ 0x59480] method SETUP failed: 454 Session Not Found
 [rtsp @ 0x59480] Could not find codec parameters for stream 0 (Audio: mp3
 (U[0][0][0] / 0x0055), 44100 Hz, 2 channels, s16p, 256 kb/s): unspecified
 frame size
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 rtsp://strm01.novotempo.org.br/radionovotempo-vivo: could not find codec
 parameters

 }}}

 Forcing it to TCP however makes it work (disregard the decoding errors):
 {{{
 % ffmpeg -rtsp_transport tcp -i rtsp://strm01.novotempo.org.br
 /radionovotempo-vivo -acodec copy -vcodec copy test.file

 ...

 [mp3 @ 0x5da80] Header missing
     Last message repeated 51 times
 [rtsp @ 0x59460] decoding for stream 0 failed
 [rtsp @ 0x59460] Could not find codec parameters for stream 0 (Audio: mp3
 (U[0][0][0] / 0x0055), 44100 Hz, 2 channels, s16p, 256 kb/s): unspecified
 frame size
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 rtsp://strm01.novotempo.org.br/radionovotempo-vivo: could not find codec
 parameters
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3222>
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