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• concat two video using ffmpeg working on local but not working on server why ?

  21 février 2018, par Jinal Somaiya

  Here the code is for concat two video and adding watermark to that video but this code working perfectly in local but not in server.

  The code is as follows :

  $videoFileName = rand('111111', '999999').'_'.time().'.'.$request->file('video1')->getClientOriginalExtension();
  
  
  
  $intermediateVideo1 = rand('1111111', '9999999').'_'.time().'.ts';
  
  $intermediateVideo2 = rand('1111111', '9999999').'_'.time().'.ts';
  
  $concatVideoFileName = rand('111111', '999999').'_'.time().'.'.$request->file('video1')->getClientOriginalExtension();
  
  
  
  exec('ffmpeg -i '.$request->file('video1').' -c copy -bsf:v h264_mp4toannexb -f mpegts '.$intermediateVideo1);
  
  exec('ffmpeg -i '.$request->file('video2').' -c copy -bsf:v h264_mp4toannexb -f mpegts '.$intermediateVideo2);
  
  exec('ffmpeg -i "concat:'.$intermediateVideo1.'|'.$intermediateVideo2.'" -c copy -bsf:a aac_adtstoasc '.public_path('uploads/videos/'.$concatVideoFileName));
  
  
  
  exec('ffmpeg -i '.public_path('uploads/videos/'.$concatVideoFileName).' -i '.storage_path("assets/image/watermark.png").' -filter_complex "overlay" '.public_path('uploads/videos/'.$videoFileName));
  
  
  
  File::delete($intermediateVideo1);
  
  File::delete($intermediateVideo2);
  
  File::delete(public_path('uploads/videos/'.$concatVideoFileName));

• How to open file\live stream with FFMPEG edit each frame with openCV and save that as encoded with FFMPEGfile\live stream ?

  17 février 2013, par Spender

  How to open file\live stream with FFMPEG edit each frame with openCV and save that as encoded with FFMPEGfile\live stream ?

• How to create output live stream from bunch of input live streams on the fly with ffmpeg

  27 septembre 2022, par Alex

  Iam looking for a solution how to merge a bunch of live streams into one output live stream with ability to adding new streams and remove old on the fly without output stream stopping.

  


  Something like this command shoud work fine for static number of streams :

  


  ffmpeg -i "rtsp://steam1" -i "rtsp://steam2" -filter_complex "overlay=70:70" -vcodec libx264 -preset ultrafast -f flv rtmp://steam1-stream2-mosaic


  


  But main issue that number of streams is a dynaminc parameter in my case.

  


  I'll try to explain using YouTube as an example and why that "on-the-fly"-logic is important to me. If on start I have two input streams as in command above, and run ffmpeg command to push merged output stream to YouTube, when third input stream is make available, I should somehow add it to main output stream, that already publishing to YouTube. Or, if one of two streams are closed, remove it from published stream.

  


  Obvious solution is to terminate first ffmpeg command with two streams, make new one with new stream list and republish output stream to where I need it. But, when previous output stream stopped, RTMP(S) connection closes, YouTube detect connection loss and close stream, disconnect all viewers, close chat and others. So when ffmpeg pushed new output stream with new stream list, this will be a completely new RTMP(S) connection for YouTube, with empty watch list and chat history.

  


  Main issue is how to add new and remove old streams for single output stream without closing RTMP(S) connection. Modifying existing ffmpeg process looks unavailable, but, maybe, there is some network socket magic, when new ffmpeg process push their output stream to socket that opened by old ffmpeg process. RTMP(S) protocol in this case may generate some errors or "black screen" for a seconds, but this is applicable for me.

  


  ffmpeg is not a requirement : if you can suggest solution with other software, it will be also interesting.