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• Ffmpeg video of images in loop ?

  4 février 2024, par Daniel

  I am trying to make a video from 2 images repeating in loop :
image1.png to be shown 1.2 seconds.
Then image2.png to be shown for 3 seconds.
Video should be long 180 seconds.
png images are different resolution, image1 is smaller, image2 is 1080*1920, video should use resolution of a image2, and image1 should be shown in its original size, not stretched.

  


  ffmpeg -loop 1 -t 1.2 -i image1.png -loop 1 -t 3 -i image2.png -filter_complex "[0:v]scale=1920:1080:force_original_aspect_ratio=decrease[img1];[1:v][img1]overlay=eof_action=repeat[video]" -map "[video]" -t 180 -r 30 -y output.mp4

  


  Output is 3 seconds long and show only image1 ?

  


• FFMPEG use audio volume as param for filters

  2 septembre 2016, par user3878395

  Can someone help me with FFMPEG’s filter_complex ? I need to use the volume from an audio channel as param for filters (logo size dependent on audio volume).

  I have this command and I need it to change size of [3:v] (logo.png) by audio volume from [2:a] (test.mp3)

  bin/ffmpeg -loop 1 -f image2 -i img.jpg -i hp.png -ss 20 -t 4 -i test.mp3 -i logo.png -filter_complex "[2:a]showwaves=s=780x140:mode=p2p,format=rgba,colorkey=black[sw];[0:v]scale=1920:-1,crop=iw:1080[bg];[bg][sw]overlay=(main_w/2-overlay_w/2):(main_h/2-overlay_h/2+200),format=yuv420p[ff];[ff][1:v]overlay=(main_w/2-overlay_w/2+30):(main_h/2-overlay_h/2-50),format=yuv420p[ff2];[ff2][3:v]overlay=(main_w/2-overlay_w/2+30):(main_h/2-overlay_h/2-50),format=yuv420p" -shortest -y -c:a aac -vcodec libx264 -strict -experimental -b:a 192k video.mp4

• Use FFmpeg to crop a video to square format in Android

  22 août 2016, par Cédric Portmann

  I am currently working on an app that is supposed to crop a 16:9 video into a 1:1 video. However I dont get the code working. If possible the software should convert the inputed video as fast as possible. The resolution can vary between 480x480 and 720x720.

  If I could choose the postion of the crop frame it would be perfect.

  The error I get :

  E/FFmpeg: Exception while trying to run: [Ljava.lang.String;@f0c91b8
  
  java.io.IOException: Error running exec(). Command: [/data/user/0/com.android.grafika/files/ffmpeg, -i /storage/emulated/0/Alphacrypt1.mp4 -vf crop=640:256:0:400 -threads 5 -preset ultrafast -strict -2 /storage/emulated/0/YourCroppedMovie.mp4] Working Directory: null Environment: null
  
  at java.lang.ProcessManager.exec(ProcessManager.java:215)
  
  at java.lang.Runtime.exec(Runtime.java:174)
  
  at java.lang.Runtime.exec(Runtime.java:129)
  
  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$2.call(AsyncTask.java:295)
  
  at java.util.concurrent.FutureTask.run(FutureTask.java:237)
  
  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
  
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
  
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
  
  at java.lang.Thread.run(Thread.java:818)
  
  Caused by: java.io.IOException: No such file or directory
  
  at java.lang.ProcessManager.exec(Native Method)
  
  at java.lang.ProcessManager.exec(ProcessManager.java:213)
  
  at java.lang.Runtime.exec(Runtime.java:174) 
  
  at java.lang.Runtime.exec(Runtime.java:129) 
  
  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$2.call(AsyncTask.java:295) 
  
  at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
  
  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234) 
  
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
  
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
  
  at java.lang.Thread.run(Thread.java:818) 

  The code I am using :

  final String[] cmd = new String[]{"-i /storage/emulated/0/Alphacrypt1.mp4 -vf crop=640:256:0:400 -threads 5 -preset ultrafast -strict -2 /storage/emulated/0/YourCroppedMovie.mp4"};
  
  
  
      try {
  
          final FFmpeg ffmpeg = FFmpeg.getInstance(this);
  
          ffmpeg.execute(cmd, new FFmpegExecuteResponseHandler() {
  
              @Override
  
              public void onSuccess(String message) {
  
                  Toast.makeText(getApplicationContext(), "Successfully converted!",
  
                          Toast.LENGTH_LONG).show();
  
              }
  
  
  
              @Override
  
              public void onProgress(String message) {
  
  
  
              }
  
  
  
              @Override
  
              public void onFailure(String message) {
  
                  Toast.makeText(getApplicationContext(), "Fail!"+ message,
  
                          Toast.LENGTH_LONG).show();
  
              }
  
  
  
              @Override
  
              public void onStart() {
  
                  Toast.makeText(getApplicationContext(), "Started!",
  
                          Toast.LENGTH_LONG).show();
  
              }
  
  
  
              @Override
  
              public void onFinish() {
  
                  Toast.makeText(getApplicationContext(), "Stopped!",
  
                          Toast.LENGTH_LONG).show();
  
              }
  
          });
  
      } catch (FFmpegCommandAlreadyRunningException e) {
  
  
  
      }

  Thank you for your help.

  SOLUTION :

  1. I did not add the "Load Binary" part, which is necessary to run the
     FFmpeg library (http://writingminds.github.io/ffmpeg-android-java/).
  2. The command needs to be splitted using .split(" "); as already told by printfmyname
  3. For now I use -vf crop=1080:1080:0:0 to crop the video to a square. (Without messing up the ratio)