[FFmpeg-user] impossible to read rtsp stream with the type h264

[Carl Eugen Hoyos]

> Am 26.02.2019 um 18:07 schrieb ABDALLAH Moussa <Moussa.ABDALLAH at nexeya.com>:
> 
> Hi,
> 
> I try to read a stream video with the command line : ffmpeg -i rtsp://192.9.200.121/h264 -y -map 0 -t 5 -c copy -f matroska  _capture.mkv
> 
> And I get this error :
> 
> ffmpeg version 4.1.1 Copyright (c)

Please remember that only current FFmpeg git head is supported here.

> 2000-2019 the FFmpeg developers
>  built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-36)
>  configuration:
>  libavutil      56. 22.100 / 56. 22.100
>  libavcodec     58. 35.100 / 58. 35.100
>  libavformat    58. 20.100 / 58. 20.100
>  libavdevice    58.  5.100 / 58.  5.100
>  libavfilter     7. 40.101 /  7. 40.101
>  libswscale      5.  3.100 /  5.  3.100
>  libswresample   3.  3.100 /  3.  3.100

> [rtsp @ 0x39da4c0] UDP timeout, retrying with TCP

Did you try forcing tcp? It may help if a camera timeout is the issue.

> [rtsp @ 0x39da4c0] method SETUP failed: 454 Session Not Found
> [rtsp @ 0x39da4c0] Could not find codec parameters for stream 0 (Video: h264, none, 1280x720): unspecified pixel format
> Consider increasing the value for the 'analyzeduration' and 'probesize' options

These are the relevant lines, everything else is just a consequence.
Consider increasing verbosity.

Carl Eugen