private IMediaWriter writer;

private String videoName = "CapturedVideo.mp4";

private final int delayBetweenFrames = 30/1000;
private final Timer timer = new Timer(delayBetweenFrames, this);

public void startCapture(){
    try {
        audio = new AudioCapture();
        robot = new Robot();
        writer = ToolFactory.makeWriter(videoName);
        writer.addVideoStream(0, 0, ICodec.ID.CODEC_ID_H264,capBounds.width,capBounds.height);
        writer.addAudioStream(1, 0, 2, 44100);
        startTime = System.currentTimeMillis();

        timer.start();

    } catch (AWTException ex) {}
}

public void stopCapture(){
        timer.stop();
        try {
            Thread.sleep(100);
        } catch (InterruptedException ex) {}
        writer.close();
}

public void actionPerformed(ActionEvent e){
        if(e.getSource() == timer){
            BufferedImage screen = getCaptureImage();
            writer.encodeVideo(
                0,
                screen,
                (System.currentTimeMillis()-startTime-totalPauseTime),
                TimeUnit.MILLISECONDS
            );

            addAudioData();
        }
}

public BufferedImage getCaptureImage(){
    int x = MouseInfo.getPointerInfo().getLocation().x;
    int y = MouseInfo.getPointerInfo().getLocation().y;

    BufferedImage screen = robot.createScreenCapture(capBounds);
    if(screen.getType() != BufferedImage.TYPE_3BYTE_BGR){
        BufferedImage image = new BufferedImage(screen.getWidth(),screen.getHeight(),BufferedImage.TYPE_3BYTE_BGR);

        Graphics2D g = screen.createGraphics();
        g.drawImage(cursor, x, y, null);
        image.getGraphics().drawImage(screen, 0, 0, null);
        screen = image;
        g.dispose();
    }
    return screen;
}