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• ffmpeg for loop into bash script

  18 mars 2015, par gaz

  I use a for loop on the mac command line to convert a bunch of avi’s to mp4’s
  I would like to put this into a bash script so I can just run the script on any given directory.

  e.g shelf script name [directory

  and let it do its thing.

  Do I just open a text editor and add

  #!/bin/bash

  then my for loop and ffmpeg arguments
  then end it all with
  fi ?

  Then make it executable ? Is is that simple.

  @Robert Rowntree

  Many thanks for the link. This looks like it could be very useful to me. I am not familiar with the concatenate so I would have never found that information.

  It appears that I can give ffmpeg a bunch of files at the command line or to read from a text file and ffmpeg will output them all into a single format, In my case MP4’s. Well at least this is what I think it does.

  The "The inputs have to be of the same frame size, and a handful of other attributes have to match" worries me a bit, do i need to check the frame rate of every movie to ensure they all match ?

  My ultimate goal would be to run a script on say, 30 mixed video files, avi, wmv, mkv, mpg etc and output the lot to mp4, but I think this is way too complicated for me.

  I normally just repack mkv’s to mp4 and the quality and size are good and I’m pleased with the results and speed. However, I tried just repacking a the aforementioned avi’s and the quality was poor and pixelated. I searched around and finally found this example ;

  ffmpeg -i input.avi -c:v libx264 -crf 19 -preset slow -c:a aac -strict experimental -b:a 192k -ac 2 out.mp4 (can this be improved ? Sped up ?)

  Which produces great quality mp4 files from the avi’s I have got but does take a long time. Hence why I originally asked for help creating a script. Which I intended running on the folder of avi’s.

  Be great to be able just to run a script on every non mp4 files and have great results every time :) But with different codecs and frame rates etc etc I suppose this will never be possible.

  Any further help or input will be greatly received.

  Thanks again.

• Revision 8fb9f083f2 : Merge changes I0b51674f,I1ea6ebf9,I89076d93 into experimental * changes : lint

  14 août 2012, par John Koleszar

  Merge changes I0b51674f,I1ea6ebf9,I89076d93 into experimental * changes : lint_hunks : show style violations in the index intersect_diffs : split out diff classes ftfy : update to match current astyle rule

• java.io.IOException : Cannot run program "/data/user/0/com.voi.myapplication8/files/ffmpeg" : error=13, Permission denied

  1er avril 2024, par Harsha

  


  java.io.IOException : Cannot run program
"/data/user/0/com.voi.myapplication8/files/ffmpeg" : error=13,
Permission denied

  


  


  I am using this dependencies
implementation 'com.writingminds:FFmpegAndroid:0.3.2'

  


  


  2024-03-31 21:40:31.045 15937-16762 FFmpeg
  
com.voi.myapplication8 E Exception while trying to run :
[Ljava.lang.String ;@71d4c0f
java.io.IOException : Cannot run program
"/data/user/0/com.voi.myapplication8/files/ffmpeg" : error=13,
Permission denied
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1050)
at java.lang.Runtime.exec(Runtime.java:712)
at java.lang.Runtime.exec(Runtime.java:571)
at
com.github.hiteshsondhi88.libffmpeg.ShellCommand.run(ShellCommand.java:10)
at
com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground(FFmpegExecuteAsyncTask.java:38)
at
com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground(FFmpegExecuteAsyncTask.java:10)
at android.os.AsyncTask$3.call(AsyncTask.java:394)
at java.util.concurrent.FutureTask.run(FutureTask.java:264)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:305)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644)
at java.lang.Thread.run(Thread.java:1012)
Caused by : java.io.IOException : error=13, Permission denied
at java.lang.UNIXProcess.forkAndExec(Native Method)
at java.lang.UNIXProcess.(UNIXProcess.java:133)
at java.lang.ProcessImpl.start(ProcessImpl.java:141)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
at java.lang.Runtime.exec(Runtime.java:712) 
at java.lang.Runtime.exec(Runtime.java:571) 
at
com.github.hiteshsondhi88.libffmpeg.ShellCommand.run(ShellCommand.java:10) 
at
com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground(FFmpegExecuteAsyncTask.java:38) 
at
com.github.hiteshsondhi88.libffmpeg.FFmpegExecuteAsyncTask.doInBackground(FFmpegExecuteAsyncTask.java:10) 
at android.os.AsyncTask$3.call(AsyncTask.java:394) 
at java.util.concurrent.FutureTask.run(FutureTask.java:264) 
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:305) 
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644) 
at java.lang.Thread.run(Thread.java:1012)  2024-03-31 21:40:31.045
15937-15937 FFmpeg com.voi.myapplication8
  
E Video cropping failed :