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• JavaCV FFmpegFrameRecorder Video output reddish color

  14 juin 2016, par Diego Perozo

  I am trying to make a video .mp4 file out of a group of images using FFmpegFrameRecorder as a part of a bigger program, so I set up a test project in which I try to make a video out of 100 instances of the same frame at 25fps. The program seems to work. However, every time I run it the image seems to be reddish. As if a red filter had been applied to it.

  Here’s the code snippet :

  public static void main(String[] args) {
  
      File file = new File("C:/Users/Diego/Desktop/tc-images/image0.jpg");
  
      BufferedImage img = null;
  
      try {
  
          img = ImageIO.read(file);
  
      } catch (IOException e1) {
  
          e1.printStackTrace();
  
      }
  
      IplImage image = IplImage.createFrom(img); 
  
      FFmpegFrameRecorder recorder = new FFmpegFrameRecorder("C:/Users/Diego/Desktop/tc-images/test.mp4",1920,1080); 
  
      try { 
  
      recorder.setVideoCodec(13);
  
      recorder.setFormat("mp4");
  
      recorder.setPixelFormat(0);
  
      recorder.setFrameRate(25);
  
      recorder.start(); 
  
      for (int i=0;i<100;i++){ 
  
      recorder.record(image); 
  
      } 
  
      recorder.stop(); 
  
      } 
  
      catch (Exception e){ 
  
      e.printStackTrace(); 
  
      } 
  
  }

  I’d appreciate it if anybody told me what’s wrong. Thanks in advance for any help.

• ffmpeg combine images and audio into video and loop through images until end of audio

  12 avril 2022, par george

  I have found this code to combine multiple images and one audio file into video, but what I want is the images to loop until the end of audio. So what I mean, if I have 5 images and each image is shown for 5 seconds, after 25 seconds show again the first image, second image etc and this will continue until the end of audio.

  


  ffmpeg -r 0.2 -i Scan-130802-%04d.jpg -i "1.mp3" \
       -vcodec libx264 -vf scale=1920:1080 \
       -crf 25 -preset slow -acodec copy video.mp4


  


  another problem I have is that with the above code the images appear horizontally flipped for some reason.

  


• java.io.IOException : Error running exec() Working Directory : null Environment : null

  23 janvier 2017, par Muhammad Hamza Shahid

  I am using WritingMinds/ffmpeg-android-java in application.

  here is my code

  loadFFmpeg();
  
  String cmd="ffmpeg -i /storage/emulated/0/media/audio/a.mp3 -i  /storage/emulated/0/recording.3gp -filter_complex \"[0:a][1:a]amerge=inputs=2[aout]\" -map \"[aout]\" " + outputFile;
  
  executeFFmpeg(cmd.split(" "));

  and

  private void loadFFmpeg() {
  
      FFmpeg ffmpeg = FFmpeg.getInstance(MainActivity.this.getApplicationContext());
  
      try {
  
          ffmpeg.loadBinary(new LoadBinaryResponseHandler() {
  
  
  
              @Override
  
              public void onStart() {}
  
  
  
              @Override
  
              public void onFailure() {}
  
  
  
              @Override
  
              public void onSuccess() {}
  
  
  
              @Override
  
              public void onFinish() {}
  
          });
  
      } catch (FFmpegNotSupportedException e) {
  
          // Handle if FFmpeg is not supported by device
  
      }
  
  }
  
  
  
  private void executeFFmpeg(String[] cmd)
  
  {
  
      /*String workFolder = getApplicationContext().getFilesDir() + "/ffmpeg";
  
      String environment = Environment.getExternalStorageDirectory().getAbsolutePath();
  
      Map map = new HashMap();
  
      map.put("Working Directory", workFolder);
  
      map.put("Environment",environment);*/
  
      FFmpeg ffmpeg = FFmpeg.getInstance(MainActivity.this.getApplicationContext());
  
      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() {
  
                  stop.setEnabled(false);
  
                  play.setEnabled(true);
  
              }
  
          });
  
      } catch (FFmpegCommandAlreadyRunningException e) {
  
          // Handle if FFmpeg is already running
  
      }
  
  }

  but I am getting following error

  6784-6962/com.flipartstudio.playandrecord E/FFmpeg : Exception while trying to run : [Ljava.lang.String ;@41803270
  java.io.IOException : Error running exec(). Command : [/data/data/com.flipartstudio.playandrecord/files/ffmpeg, /system/bin/ls, -l, /data/data/com.example.foo/files/ffmpeg] Working Directory : null Environment : null
  at java.lang.ProcessManager.exec(ProcessManager.java:211)
  at java.lang.Runtime.exec(Runtime.java:168)
  at java.lang.Runtime.exec(Runtime.java:123)
  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$2.call(AsyncTask.java:287)
  at java.util.concurrent.FutureTask.run(FutureTask.java:234)
  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
  at java.lang.Thread.run(Thread.java:856)
  Caused by : java.io.IOException : No such file or directory
  at java.lang.ProcessManager.exec(Native Method)
  at java.lang.ProcessManager.exec(ProcessManager.java:209)
  at java.lang.Runtime.exec(Runtime.java:168) 
  at java.lang.Runtime.exec(Runtime.java:123) 
  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$2.call(AsyncTask.java:287) 
  at java.util.concurrent.FutureTask.run(FutureTask.java:234) 
  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 
  at java.lang.Thread.run(Thread.java:856) 

  I have also added