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• I use the bramp/ffmpeg-cli-wrapper of java. How to terminate the execution in the thread ?

  8 mars, par Hao Tan

  I want to use ffmpeg to achieve streaming function

  


  First I created a thread pool

  


   private final Map taskThreads = new ConcurrentHashMap<>();
Thread taskThread = new Thread(() -> {
            try {
                private void startTask(Device task) {
        Thread taskThread = new Thread(() -> {

            FFmpegBuilder builder = new FFmpegBuilder()
                    .setInput(source) 
                    .overrideOutputFiles(true)
                    .addOutput(destination) 
                    .setFormat("flv")
                    .addExtraArgs("-c", "copy") 
                    .done();

            FFmpegExecutor executor = new FFmpegExecutor(ffmpeg, ffprobe);
            executor.createJob(builder).run();
        });
        taskThreads.put(task.getId(), taskThread);
        taskThread.start();
    }


  


  stop code

  


  public void stopTask(Integer taskId) {
        Thread taskThread = taskThreads.get(taskId);
        if (taskThread != null) {
            taskThread.interrupt(); 
            taskThreads.remove(taskId);
            
            DeviceDto task = deviceService.findById(taskId);
            if (task != null) {
                task.setIsOnline(0);
                Device device = new Device();
                BeanUtils.copyProperties(task,device);
                deviceService.update(device);
            }
        }
    }


  


  I call stopTask and cannot terminate the ffmpeg thread

  


  It should be executor.createJob(builder).run(); blocked

  


  How to solve

  


• Problems with timeout when there is no video source with RTP format in java openCV

  15 février 2019, par Javier Dalmau Fajardo

  I have problems with the timeout when there is no video source with RTP format.

  If I execute the code and there is no video, the program stays waiting in the grabber.Start () function all the time.

  FFmpegFrameGrabber grabber;
  
  try{
  
      Frame img;        
  
      grabber = new FFmpegFrameGrabber("rtp://" + ip + ":1234");
  
      grabber.setOption("stimeout", String.valueOf(5*1000000));
  
      grabber.Start ();
  
      img = grabber.grab();
  
      Java2DFrameConverter converter = new Java2DFrameConverter();
  
  BufferedImage bufferedImag;
  
  bufferedImag = converter.convert(img);
  
      grabber.stop();
  
  }catch (FrameGrabber.Exception ex) {
  
      throw new IOException("Could not open video file ", ex);
  
  }

  As I said before, when the video exists, everything works perfectly, but when there is no video source, the program stays in the grabber.start () and I can not get out of there.

  I would like that when 5 seconds pass, it generates an exception and leaves the grabber.satart () function. I use grabber.setOption("stimeout", String.valueOf(5*1000000)) ; to controlate it but don’t work in RTP.

  I have checked the operation with RTSP video source and the code works perfectly, that is, after 5 seconds it generates an exception ... but I need to control the RTP video source.

  Someone could help me, thanks.

• How to insert images and text in video with ffmpeg - java

  4 février 2017, par MaF

  String[] code = new String[]{"ffmpeg", "-i","D:/ffmpeg/20170201_164127.mp4",
  
  
  
              "-i","D:/ffmpeg/cc.png", "-filter_complex",
  
  
  
              "[0:v][1:v]overlay=main_w-overlay_w-5:main_h-overlay_h-5",
  
              "drawtext=fontfile=/ffmpeg/Arial.ttf:text='TESTING'fontcolor=white@1.0:fontsize=70:x=10:y=H-th-10:box=1:boxcolor=black@0.5:boxborderw=5:x=10:y=H-th-10",
  
  
  
              "[out]","-map", "[out]", "-map", "2:0",
  
              "-acodec","mp3", "D:/ffmpeg/test7.mp4"};
  
  
  
  
  
  
  
              Process processDuration = new ProcessBuilder(code).redirectErrorStream(true).start();
  
  
  
              StringBuilder strBuild = new StringBuilder();
  
  
  
              try (BufferedReader processOutputReader = new BufferedReader(new InputStreamReader(processDuration.getInputStream(), Charset.defaultCharset()));) {
  
  
  
                  String line;
  
  
  
                  while ((line = processOutputReader.readLine()) != null) {
  
  
  
                      strBuild.append(line + System.lineSeparator());
  
  
  
                  }
  
  
  
                  processDuration.waitFor();
  
  
  
              }
  
  
  
              String outputJson = strBuild.toString().trim();
  
  
  
              System.out.println(outputJson);
  
  
  
              }

  When i use only images the code is correctly. But when I use all the code this happens :

  [NULL @ 00000000006abe60] Unable to find a suitable output format for
  ’drawtext=fontfile=/ffmpeg/Arial.ttf:text=’TESTING’fontcolor=white@1.0:fontsize=70:x=10:y=H-th-10:box=1:boxcolor=black@0.5:boxborderw=5:x=10:y=H-th-10’
  drawtext=fontfile=/ffmpeg/Arial.ttf:text=’TESTING’fontcolor=white@1.0:fontsize=70:x=10:y=H-th-10:box=1:boxcolor=black@0.5:boxborderw=5:x=10:y=H-th-10 :
  Invalid argument