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

[ABDALLAH Moussa]

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) 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
[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
Input #0, rtsp, from 'rtsp:// 192.9.200.121/h264':
  Metadata:
    title           : h264
    comment         : Network Camera Streamer
  Duration: 00:00:00.00, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: h264, none, 1280x720, 90k tbr, 90k tbn, 180k tbc
    Stream #0:1: Data: none
[matroska @ 0x3a20fc0] Only audio, video, and subtitles are supported for Matroska.
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
    Last message repeated 1 times
[root at localhost Téléchargements]#

Is it a problem from my camera ?

Thank you for your help,

Moussa.