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• Bash script to recursive find and convert movies

  24 March, by Jacco

  in my large movie collection I would like to search for movies with the primary (first) audio track with DTS coding to be converted to Dolby.

  


  My problem would be the first track I think. My current bash script will list any movie containing a DTS track, but does not specify which track.

  


  #!/bin/bash
# My message to create DTS list
find /home/Movies -name '*.mkv' | while read f
do
if mediainfo "$f" | grep A_DTS; then
echo $f 
fi
done


  


  After that I would like to run this command

  


  ffmpeg -i $f -map 0:v -map 0:a:0 -map 0:a -map 0:s -c:v copy -c:a copy -c:s copy -c:a:0 ac3 -b:a:0 640k $f


  


  or is there a way to move all the audio tracks down and adding the new AAC track?

  


  ###Progress

  


  Thanks to @llogan I have finetuned the bash to find the required files.

  


  #!/bin/bash
# My DTS conversion script
# credits to llogan

find /Mymovies -name '*.mkv' | while read f
do
 if ffprobe -v error -select_streams a:0 -show_entries stream=codec_name -of csv=p=0 "$f" | grep dts; then
 echo "$f"
fi
done


  


  Now digging into the command I think I may have a working command. Anybody spot a problem?

  


  ffmpeg -i $f
      -map 0:v -c:v copy
      -map 0:a:0? -c:a:0 ac3
      -map 0:a:0? -c:a:1 copy
      -map 0:a:1? -c:a:2 copy
      -map 0:a:2? -c:a:3 copy
      -map 0:a:3? -c:a:4 copy
      -map 0:a:4? -c:a:5 copy
      -map 0:a:5? -c:a:6 copy
      -map 0:a:6? -c:a:7 copy
      -map 0:a:7? -c:a:8 copy
      -map 0:a:8? -c:a:9 copy
      -map 0:s? -c copy
      -b:a:0 640k
/tmp/output.mkv
mv $f /home/DTS_BACKUP/
mv /tmp/output.mkv $f
rm /tmp/output.mkv


  


  So the end result would look like:

  


  #!/bin/bash
# My DTS conversion script
# credits to llogan
find /Mymovies -name '*.mkv' | while read f
do
 if ffprobe -v error -select_streams a:0 -show_entries stream=codec_name -of csv=p=0 "$f" | grep dts; then

ffmpeg -i $f
          -map 0:v -c:v copy
          -map 0:a:0? -c:a:0 ac3
          -map 0:a:0? -c:a:1 copy
          -map 0:a:1? -c:a:2 copy
          -map 0:a:2? -c:a:3 copy
          -map 0:a:3? -c:a:4 copy
          -map 0:a:4? -c:a:5 copy
          -map 0:a:5? -c:a:6 copy
          -map 0:a:6? -c:a:7 copy
          -map 0:a:7? -c:a:8 copy
          -map 0:a:8? -c:a:9 copy
          -map 0:s? -c copy
          -b:a:0 640k
/tmp/output.mkv
mv $f /home/DTS_BACKUP/
mv /tmp/output.mkv $f
rm /tmp/output.mkv

fi
done


  


• ffmpeg find files PHP exec

  23 April 2017, by user892134

  Having no success with ffmpeg. How do i check if a file even exists?

  I have the file

  $mp3 = $_SERVER['DOCUMENT_ROOT']."/wp-content/youtube_channels/major.mp3";

  I’ve attempted to find the file with exec() but nothing is returned. How do i solve? I’m totally lost.

  var_dump(exec("/usr/include/ffmpeg -i $mp3"));

  All that is returned string(0) ""

  when i check phpinfo ffmpeg is installed and when i type exec("whereis ffmpeg") what is returned is /usr/include/ffmpeg.

  I’ve been stuck on this for 2 days, how do i solve this?

• command not working to find duration of the video file in android?

  25 October 2018, by Dinesh S

  I want to find duration of the video file. For this purpose i used the below command.
  It is working file in Desktop. While running in android.It is showing error. I also attached error message . can anyone able to tell me why it is not working?

  execFFmpegBinary("-i "+file.getAbsolutePath()+" 2>&1 | find \"Duration\"");
  
  
  
  //Function used to run command
  
  private static void execFFmpegBinary(final String command)
  
  {
  
      try
  
      {
  
          ffmpeg.execute(command, new ExecuteBinaryResponseHandler()
  
          {
  
              @Override
  
              public void onFailure(String s)
  
              {
  
                  Log.d(TAG, "FAILED with output : " + s);
  
              }
  
  
  
              @Override
  
              public void onSuccess(String s)
  
              {
  
                  Log.d(TAG, "SUCCESS with output : " + s);
  
              }
  
  
  
              @Override
  
              public void onProgress(String s)
  
              {
  
                  Log.d(TAG, "Started command : ffmpeg " + command);
  
                  Log.d(TAG, "progress : " + s);
  
              }
  
  
  
              @Override
  
              public void onStart()
  
              {
  
                  Log.d(TAG, "Started command : ffmpeg " + command);
  
              }
  
  
  
              @Override
  
              public void onFinish()
  
              {
  
                  Log.d(TAG, "Finished command : ffmpeg " + command);
  
              }
  
          });
  
      }
  
      catch (FFmpegCommandAlreadyRunningException e)
  
      {
  
          // do nothing for now
  
          Log.i(TAG,"Command Already running");
  
      }
  
  }

  Error Message:

  [NULL @ 0xac11acd0] Unable to find a suitable output format for '2>&1'
  
                  2>&1: Invalid argument