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• FFMEG : run code after complete conversion

  26 octobre 2019, par Сергей Барахтенко

  There is a code that runs FFMPEG

  shell_exec($this->config->item('ffmpeg') . ' -i ' . $path . ' ' . $cmd . ' 1>' . $folder . '/log.txt 2>&1 ');

  And there is the following line, which should, taking into account the peculiarities of the PHP language, work out immediately after shell_exec

  $params = array(
  
      'status' => 'ready'
  
  );
  
  $result = $this->model->editVideo($video_key, $params); 

  This line simply updates the status of the video in the database

  My question is, why doesn’t the further php code work after completion shell_exec ? What could be the catch ?

• Video Processing in background with work manager using ffmpeg

  24 novembre 2020, par Naseer Attari

  The problem comes when during the video processing user closes the application himself from the task manager then its processing stops.

  


  I am working on video file processing in android using FFMpeg, which is working perfectly but when I do close the application during processing from task manager then video processing has stopped working even I added all the work in work manager.

  


      @Override 
public Result doWork() {
        shellCommand = new ShellCommand();
        ffmpegBinary = new String[] {
            FileUtils.getFFmpeg(context).getAbsolutePath()
        };
        command = concatenate(ffmpegBinary, command);
        CommandResult commandResult = getCommandResult(command);
        if (command`enter code here`Result.success) {
            onSuccess(videoPath);
        } else {
            onFailure(videoPath);
        }
    }
    //getCommandResult
    private CommandResult getCommandResult(String[] command) {
        try {
            process = shellCommand.run(command, null);
    
            if (process == null) {
                return CommandResult.getDummyFailureResponse();
            }
            checkAndUpdateProcess();
            return CommandResult.getOutputFromProcess(process);
        } catch(Exception e) {} finally {
            Util.destroyProcess(process);
        }
        return CommandResult.getDummyFailureResponse();
    }


  


  As far as I can tell, when the application closes from the background then the parent process destroys it and is destroying all of its sub-process too, FFMpeg is using the android process to execute the command and check the video file status during video processing.

  


  Looking forward to hear from you.
Thanks

  


• Creating MPEG4 video file with Python from raw frames

  11 août 2016, par Mikko Ohtamaa

  I have a raw video frame source which I can access in Python. I’d like to create a MPEG4 video out of this, with MP3 background music.

  What kind of tools and libraries are available in Python for such a task ? Preferably I’d like to have an API for which I can feed output filename and then individual frames as 24 bit raw images.