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• How can I create a process that can be multiplied by a variable number ?

  18 octobre 2019, par Kaden

  A bit hard to explain this one, but I have an ingest of a variable amount of .mp4 files (sometimes it’s 30, other times it’s 10) and I need to have a subproccess.call('code', shell=True) for each of the .mp4 files that are being ingested into that folder. Each file has already been renamed in numeric order (1.mp4, 2.mp4, 3.mp4, etc...) and I can store the number of ingested files into a variable sumlines using the code
  with open(urls.txt", 'r') as file:     sumlines = sum(1 for _ in file)
  So my question is, is there a way I can use the variable sumlines to automatically subproccess call the exact number of files needed ?
  Find a screenshot here

• Can I use FFMPEG to replace $N number of frames while keeping the audio ?

  16 août 2020, par Ian Arman

  Is this possible with ffmpeg or am I required to use another program.

  


  I have a .mp4 file and I want to replace $n number of frames while keeping the audio.

  


  At this point I'm not concerned about transitions such as fading or anything - I'm only wondering if this is possible through the commands.

  


  Thus the output of the file would be {replaced frames - $N number}{remaining video - minus replaced frames}

  


• What should I put as the context - FFmpeg - Android/Java

  6 août 2017, par pudility

  I am following the documentation for FFmpeg here and I am wondering what I should put as the context ?

  My function

  public static void conversion(String[] cmd) {
  
  
  
  FFmpeg ffmpeg = FFmpeg.getInstance(context); //what should I put as the context here?
  
  
  
  try {
  
  
  
  
  
    // to execute "ffmpeg -version" command you just need to pass "-version"
  
    ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {
  
  
  
      @Override
  
      public void onStart() {
  
      }
  
  
  
      @Override
  
      public void onProgress(String message) {
  
      }
  
  
  
      @Override
  
      public void onFailure(String message) {
  
      }
  
  
  
      @Override
  
      public void onSuccess(String message) {
  
      }
  
  
  
      @Override
  
      public void onFinish() {
  
      }
  
    });
  
  } catch (FFmpegCommandAlreadyRunningException e) {
  
    // Handle if FFmpeg is already running
  
    e.printStackTrace();
  
  }
  
  }

  And then I call my function like this (from the same class) :

  public void alert(String message) {
  
        String[] cmd = {"-i"
  
                , message
  
                , "Image.gif"};
  
        conversion(cmd);
  
    }