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• Split video stream with FFmpeg and play part with FFplay [closed]

  22 mars 2024, par Jan Hein

  I have a video stream send with FFmpeg to a other computer on my local network.
At the receiver computer I want to split the video stream in multiple parts and play them at the receiver computer. How can I do that ?

  


  Example :
Stream send form sender to receiver is 1000x1000 pixels.
At the receiver split the 1000x1000 pixel stream into four parts of 500x500 pixels, and play them all four on the receiver in a separate player.

  


  I have tryed it with a multicast stream to the receiver, and played it four times with FFplay, but that was not working correct.

  


  I also hve looked for multiple outputs with FFmpeg and then multiple pipes to FFplay, but could not find a solution.

  


• Revision fe0c09c2aa : Reduce the frequency of partition size adjsutment The commit change to use part

  25 février 2014, par Yaowu Xu

  Changed Paths :
   Modify /vp9/encoder/vp9_onyx_if.c

  
  
  Reduce the frequency of partition size adjsutment

  The commit change to use partitions sizes directly from last frame
  for frames directly where last frame selects partitions sizes based
  on coding efficiency.

  On —rt —cpu-used=-5, the change hurts compression by 4% but reduces
  encoding time by 20%

  Change-Id : Ia68665e5c8489b7bfcf5fac7768332fba88928e6

• What is wrong part in my Android code with ffmpeg ?

  6 janvier 2016, par Marko androshenko

  I want to get mixed video.(Image + Video)
  Total duration of original video is 180 sec. I want to put image to the front of video. So, I made some code in android studio.
  But I can not look any toast.
  What is wrong ? How to check the end of process ?

  ...
  path = "libray folder" ;
  ...

      private class ProcessVideo extends AsyncTask {
  
              @Override
  
              protected Void doInBackground(Void... params) {
  
  
  
                  Process ffmpegProcess = null;
  
  
  
                  try {
  
            // initialize command for process video
  
                // library is video process library.
  
                      String[] command ={path,"-i", input, "-r", "1", "-q:v", "2", "-f", "image", input};
  
  
  
  
  
                      ffmpegProcess = new ProcessBuilder(ffmpegCommand).redirectErrorStream(true).start();
  
  
  
                      OutputStream ffmpegOutStream = ffmpegProcess.getOutputStream();
  
                      BufferedReader reader = new BufferedReader(new InputStreamReader(ffmpegProcess.getInputStream()));
  
  
  
                      String line;
  
  
  
                      Log.v(THISTAG,"***Starting FFMPEG***");
  
                      while ((line = reader.readLine()) != null)
  
                      {
  
  // in progress 
  
                          Log.v(THISTAG,"***"+line+"***");
  
                      }
  
  // finish all process
  
                      Log.v(THISTAG,"***Ending FFMPEG***");
  
                      videoProcessFinishFlag = true;
  
  
  
                  } catch (IOException e) {
  
                      e.printStackTrace();
  
                  }
  
  
  
                  if (ffmpegProcess != null) {
  
                      ffmpegProcess.destroy();
  
                  }
  
                  return null;
  
              }
  
  
  
              protected void onPostExecute(Void... result) {
  
  // show result
  
                 Toast toast = Toast.makeText(VideoEditorActivity.this, "Done Processing Video", Toast.LENGTH_LONG);
  
                  toast.show();
  
              }
  
          }