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• FFmpeg overlay filter_complex is slow on Android

  15 septembre 2019, par nor0x

  I’m using FFmpeg on Android (Xamarin) to add a watermark to a video. I have tested the operation with multiple videos and i think overall performance is pretty bad. I wanted to share my results and see how if anyone has similar or better benchmarks.

  I’m using the following command for adding a png watermark to the video.

  $"-i {video} -i {watermark} -filter_complex \"overlay=W-w-5:H-h-5\" -codec:a copy -preset ultrafast -loglevel debug {output} -y";

  The watermark is a 150x150 png with a filesize of 18KB.

  Video 1
  - 13 seconds
  - 3840x2160
  - 60FPS
  - 125MB
  FFmpeg duration : 156 seconds

  Video 2
  - 4 seconds
  - 3840x2160
  - 30FPS
  - 17MB
  FFmpeg duration : 35 seconds

  Video 3
  - 10 seconds
  - 1920x1080
  - 60FPS
  - 35MB
  FFmpeg duration : 79 seconds

  What do you think of these results, is it legit that adding an overlay takes that long ? Maybe there is something wrong with my command ? I ran these tests on an Asus Zenfone 6 (Snapdragon 855, 8GB RAM)

  EDIT :
  I’m using FFmpeg version 3.0.1.1 compiled for ARM. (https://github.com/gperozzo/XamarinAndroidFFmpeg/tree/master/binary/3.0.1.1/arm).

  All videos are mp4 files with the H.264 format.

• ffmpeg exr sequence to mov with h264 encoding

  19 mars 2017, par JokerMartini

  How can I convert a sequence of exr’s to a mov file with h264 compression ? I’ve been messing with this for quite some time now and haven’t been able to get it to work at all.
  Here is what i have so far.

  

  setlocal
  
  
  
  :: VARIABLES
  
  SET ffmpeg="C:/ffmpeg/bin/ffmpeg.exe"
  
  SET IMAGES="C:/Users/JokerMartini-Asus/Desktop/Trash/exr/teapot.%04d.exr"
  
  SET OUTPUT="C:/Users/JokerMartini-Asus/Desktop/Trash/exr/teapot.mp4"
  
  
  
  ::%ffmpeg% -y -f image2 -i %IMAGES% %OUTPUT%
  
  "C:/ffmpeg/bin/ffmpeg.exe" -y -f image2 -i "%IMAGES%" "%OUTPUT%"
  
  
  
  endlocal
  
  echo - Complete!
  
  ::pause

• FFmpeg can't run in some device Android

  30 mars 2016, par tqn

  i’m working in a video processing project and now i’m using ffmpeg library in Android. I’m facing with a strange problem with asus zenphone 4 t00l (or all x86 device, I’ve just test in this x86 phone). When start command in project, app always crash :

  03-30 15:08:18.461 21068-21068/com.paditech.videa I/FFmpeg: Loading FFmpeg for armv7-neon CPU
  
  03-30 15:08:18.781 21068-21068/com.paditech.videa I/System.out: Success........
  
  03-30 15:26:12.933 21068-21068/com.paditech.videa E/IMGSRV: :0: PVRDRMOpen: TP3, ret = 59
  
  03-30 15:26:12.933 21068-21068/com.paditech.videa E/IMGSRV: :0: PVRDRMOpen: TP3, ret = 63
  
  03-30 15:26:15.913 21068-21068/com.paditech.videa D/VideoActivity: onDestroy
  
  03-30 15:26:18.993 21068-21068/com.paditech.videa I/FFmpeg: Loading FFmpeg for armv7-neon CPU
  
  03-30 15:26:19.263 21068-21068/com.paditech.videa I/System.out: Success........
  
  03-30 15:26:42.583 21068-21184/com.paditech.videa D/FFmpeg: Running publishing updates method
  
  03-30 15:26:42.583 21068-21068/com.paditech.videa E/IMGSRV: :0: PVRDRMOpen: TP3, ret = 59
  
  03-30 15:26:42.583 21068-21068/com.paditech.videa E/IMGSRV: :0: PVRDRMOpen: TP3, ret = 85
  
  03-30 15:26:42.683 21068-21068/com.paditech.videa D/VideoActivity: /data/data/com.paditech.videa/files/ffmpeg[1]: syntax error: '-�-4�' unexpected
  
  03-30 15:26:42.683 21068-21068/com.paditech.videa D/VideoActivity: /data/data/com.paditech.videa/files/ffmpeg[1]: syntax error: '-�-4�' unexpected

  First, I think the problem is ffmpeg library. So I created a test module with simple activity just load and run command and there’re no problem.

  Second, I’m afraid that app cannot load version ffmpeg, because in my log, it’s armv7-neon althought it’s x86 (In my test module, it display x86). And according my search result, may be a external library make app to use abi arm (Build.CPU_API="armv7"). So I try remove all library in gradle in module Test and detected a library. But check in aar file of library, it support all x86 and arm. But after remove it, app still crash with same log. And strangely, althogh Test module register as arm but it’still run success (External question : Why add library jp.wasabeef:picasso-transformations make system register as armv7 although it’s x86)

  Finally, i think problem is command. But after debug, I use same command for Test module but it still success. Now i’m still stuck with it. Could anyone help me to solve it. Thanks. Here my demo code :

      String input = "/storage/emulated/0/Videa/Video/VIDEO_20160122_160020.mp4";
  
      String output = "/storage/emulated/0/Videa/Audio/AUDIO_20160330_142501.wav";
  
      String[] command = {
  
              "-y",
  
              "-i",
  
              input,
  
              "-vn",
  
              "-f",
  
              "wav",
  
              output
  
      };
  
      FFmpeg ffmpeg = FFmpeg.getInstance(getApplicationContext());
  
      try {
  
          ffmpeg.execute(command, new ExecuteBinaryResponseHandler() {
  
  
  
              @Override
  
              public void onSuccess(String message) {
  
                  super.onSuccess(message);
  
                  System.out.println("Success " + message);
  
              }
  
  
  
              @Override
  
              public void onFailure(String message) {
  
                  super.onFailure(message);
  
                  System.out.println("Failure " + message);
  
              }
  
          });
  
      } catch (Exception e) {
  
          e.printStackTrace();
  
      }

  And here is Failed command :

      ArrayList<string> cmd = new ArrayList<string>();
  
      cmd.add("-y");
  
      cmd.add("-i");
  
      cmd.add(input);
  
      cmd.add("-vn");
  
      cmd.add("-f");
  
      cmd.add("wav");
  
      cmd.add(output);
  
      String[] result = new String[cmd.size()];
  
      return cmd.toArray(result);
  
  </string></string>