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• Cannot stop and (re-play) a rtsp stream with FFMediaElement

  5 mars 2024, par CactusJack

  I have a problem using stop and play on a rtsp stream using the FFMediaElement.

  


  I am initializing an instance of the MediaElement once by doing m_MediaPlayer = new MediaPlayer();
This instance should live the whole application lifetime.

  


  After this, I open the rtsp stream : await m_MediaPlayer.Open(new Uri(rtspAdress));
The media opens, and when I do m_MediaPlayer.Play(); the stream is displayed in the MediaElement.

  


  Now I want to stop the stream with m_MediaPlayer.Stop(); and play it again. After calling play again, the stream is not diplayed anymore. The log says :

  


  Direct Command 'Close' accepted. Perparing execution.
OnStreamReadInterrupt was requested an immediate read exit.
EVENT START : BufferingEnded
EVENT DONE : BufferingEnded
V BLK : 14.388 | CLK : 14.417 | DFT : 29 | IX : 4 | RNG : 48.897% | PQ : 0.0k | TQ : 0.0k
Direct Command 'Close' entered
MediaState changed : + Close
Media closed.
OnStreamReadInterrupt was requested an immediate read exit.
EVENT START : MediaStateChanged
EVENT START : MediaClosed
EVENT DONE : MediaStateChanged
Direct Command 'Close' completed. Result : True
EVENT DONE : MediaClosed
Dispose Entered. Waiting for Command Manager processor to stop.
Dispose is waiting for pending direct commands.
Dispose is closing media.
EVENT START : MediaClosed
Media closed.
EVENT DONE : MediaClosed
Dispose completed.

  


  So why is Stop disposing the media ?
When I create a new player before re-playing and open the stream again, it works. But this takes a moment, so I just wat to stop and start again. Is that possible ?

  


• FFMPEG play an overlay video

  6 juillet 2016, par Chris

  Hello everyone,

  I’m struggling hours on placing an image over a video (overlay) and to play the output directly in the web browser (I have FFMPEG installed on the server). Here is what I have :

  $output = shell_exec($command);                 
  
  $image =  '/image.png';         
  
  $video =  '/videoin.mp4';       
  
  $saved_video_path= "";      
  
  $i = "'";     
  
  $command = '/usr/local/bin/ffmpeg -i ' . $video . ' -i ' . $image . ' -filter_complex "[0:v][1:v] overlay=10:10:enable=' . $i . 'between(t,5,10)' . $i    . '" '.$saved_video_path;             
  
  echo "$output";      

  I would really appreciate your help !

  Chris

• GIF to MP4 Conversion with ffmpeg won't play in browsers or certain computers

  24 janvier 2014, par Gordnfreeman

  I am using a script to convert a gif to an mp4 file using ImageMagick and ffmpeg (the latest version from http://ffmpeg.gusari.org/static/). The conversion works and gives me a mp4 file which I can play on my home computer but not any other one, the file also does not play in browsers. I have downloaded a lot of codecs at home so I suspect that is the issue.

  The code I am using, I will include all of it incase there is a problem earlier on in the script :

  convert ORIGINALGIF.gif NEWPNG%03d.png
  
  ffmpeg -framerate 10 -i NEWPNG%03d.png NEWVIDEO.mp4

  And that is about it this script works and creates the file but I can only view it on my home computer, I did some research and found the script below :

  ffmpeg -framerate 10 -i NEWPNG%03d.png -b 1500k -vcodec libx264 -vpre slow -vpre baseline -g 30 NEWVID.mp4

  I have tried this and a few variations of it but even if the file gets made it cannot be played in any browsers.