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• RTMP_Connect1, handshake failed. Error while using rtmp command via FFmpeg

  1er mai 2022, par Aditya Yadav

  when I try to stream using rtmp protocol via ffmpeg with the following command :

  


  ffmpeg -stream_loop -1 -re -i "video.mp4" -c:v copy -c:a aac -ar 44100 -ac 1 -f flv rtmps://dc5-1.rtmp.t.me/s/1520759423:xxxx

  


  I get the following error :

  


  RTMP_Connect1, handshake failed. rtmps://dc5-1.rtmp.t.me/s/1520759423:xxxx: Unknown error occurred

  


  I am sure its not the client side error where I am trying to stream, and its not my network/IP related error because this same command is working via windows on the same network. When I switched to linux(Fedora 35) I started facing this issue.

  


• libdash mpd parser integration with custom player

  19 novembre 2016, par Raj

  I have written a multimedia player using ffmpeg and qt-framework. And currently I support local file playback and progressive download playback in my player. Now I want to add support for mpeg-dash vod stream playback. I thought of using libdash opensource dash library. But after so much of googling I couldn’t find any API or developer documentation regarding the same.

  Also another issue is libdash has integrated network module. But I want only mpd parser to be integrated and I have my own network module for downloading. I couln’t find any doxygen and usage documentation for libdash.

  I need help in these :

  1. Can you anyone point me to any developer documentation available for
     libdash ?
  2. Is there any alternative library for libdash ?

• FFMPEG : RTSP stream freezes but FFMPEG keeps recording

  31 juillet 2022, par Kagetsuki

  EDIT : At the time of this writing there is no functionality within FFMPEG that can detect/handle when an RTP/RTSP stream is still active but is no longer delivering valid frames. The only solution I could find was to periodically reset the stream by stopping recording, then reconnecting and starting a new recording which -f segment does NOT do.

  



  ---

  



  I'm recording an RTSP stream from a network camera with FFMPEG, and after some time (usually about an hour and a half to two hours). I'm sure it's specifically a problem with the cameras I'm using and not FFMPEG or my system resources.

  



  What specifically happens is the video freezes but network traffic with the camera continues - it just doesn't seem to send new frames. Because of this behaviour FFMPEG doesn't disconnect/keeps recording because the network connection is still alive. After a few minutes there will always be a single warning in the FFMPEG output :
More than 1000 frames duplicated
But it keeps recording - it's just the same frame over and over.

  



  The command I'm using is :

  



  ffmpeg -stimeout 1000000 -rtsp_transport udp -fflags discardcorrupt -i rtsp://192.168.1.163/live/0/MAIN -vc libx265 -f segment -segment_time 300 -segment_atclocktime 1 -reset_timestamps 1 -strftime 1  "163-%Y-%m-%d_%H-%M-%S-h265.mp4"


  



  Some notes :

  



  

  • stimeout doesn't seem to do anything as the network connection is maintained the camera just seems to stop sending (valid) frames.

  


  • Changing the codec to copy doesn't improve the issue

  


  • Changing the RTSP transport doesn't improve the issue

  


  • I'm aware there is a filter to detect frozen frames, but my FFMPEG does not seem to have it - I'm going to try and build FFMPEG myself now ; but would much prefer a solution that works with bundled FFMPEG > 4.1.3

  


  



  Having FFMPEG fail and exit after > 1000 frames are duplicated would actually be ideal, as then I can just spawn FFMPEG from a script, monitor the process, and restart it when the process ends. Any solution would be great though.