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• How to extract video from multiple videos with ffmpeg ?

  6 janvier 2021, par Abbas Perçin

  I want to extract video from multiple videos with ffmpeg. Normally, I could extract the video file from one large video file with the following command.

  


  ffmpeg -ss 648 -t 29 -i /MatrixMovie.ts -f mpegts -pix_fmt yuv422p -c:v libx264 -preset ultrafast -map 0 snapshot.ts


  


  But now I have 10 minutes of parts of this video file (MatrixMovie_part1.ts, MatrixMovie_part2.ts etc) instead of one large file. And the video that I want to extract starts on one of these parts and ends on the other.

  


  My question is How to extract video from multiple videos with ffmpeg ?

  


  I've been dealing with ffmpeq for days but couldn't manage it. I would appreciate it if you could help. Thank you.

  


• How to Convert Video to MP4 using FFMPEG in PHP

  4 octobre 2020, par Ken

  I am trying to find *.mkv and to convert into *.mp4
right now I'm using the following codes to convert .mkv videos to .mp4

  


  <?php   
    $folder = '/path/to/video/folder';
    $filename = 'a.name.of.the.video.mkv';
    $newFilename = pathinfo($filename, PATHINFO_FILENAME).'.mp4';
    exec('/usr/bin/ffmpeg -i '.$folder.DIRECTORY_SEPARATOR.$filename.' -codec copy '.$folder.DIRECTORY_SEPARATOR.$newFilename.' 2>&1', $out, $error);

?>


  


  The above codes are working fine but I want to convert all videos ending with .mkv to .mp4 without manually setting their names.

  


  I want the PHP version of the following command using above working codes.

  


  for i in *.mkv; do
  ffmpeg -i "$i" -codec copy "${i%.*}.mp4"
done


  


  I have tried this so far but did not work

  


  exec('/usr/bin/ffmpeg for i in '.$folder.'*.mkv; do ffmpeg -i "$i" -codec copy "${i%.*}.mp4" done');


  


• How do you merge an audio mp4 and video mp4 with ffmpeg in python 3 ?

  29 septembre 2020, par myth0s

  I'm creating a script in python, that at one point needs to take two files, an audio mp4 file and video mp4 file, and merge them together. They are both of the same length, and the video file matches with the audio file. However, I can't seem to get them to merge.

  


  I first tried :

  


  input_video = ffmpeg.input(onlyVidPath + "/" + inputVidTitle + ".mp4")
input_audio = ffmpeg.input(audioPath + "/" + inputAudTitle + ".mp4")
fullOut = ffmpeg.output(input_video, input_audio, vidPath, f='mp4', vcodec='copy', acodec='aac', strict='experimental')
fullOut.run()


  


  Which gave a long Traceback error, that seemed to go through the ffmpeg library, and finally gave the error "FileNotFoundError : [WinError 2] The system cannot find the file specified"

  


  That didn't work.
Next I commented that out (except for input_video and input_audio), and tried this :

  


  ffmpeg.concat(input_video, input_audio, v=1, a=1).output(vidPath, f='mp4', vcodec='copy').run()


  


  This went through the same error, ending with "FileNotFoundError : [WinError 2] The system cannot find the file specified".

  


  Am I using this correctly ? How do I merge two files, one video only, one audio only, in python with ffmpeg ?