同时显示arrayList和视频

Question

我想同时显示面部Rectangle的数组列表和视频作为背景。这是我的代码，我已经详细阐述，但我还没有达到预期的目标。此代码仅允许显示矩形列表，并固定在视频的第一个图像上（它不会将视频显示为背景）。我不知道错误的来源。有人可以帮我吗？

@SuppressWarnings("serial")
public class DirectMediaPlayerComponentTest {

    private final int width = 720;
    private final int height = 480;
    private final JPanel panel;
    private final BufferedImage image;


    static ArrayList<FaceRectangle> recList;

    ArrayList<FaceRectangle> recToDisplay = new ArrayList<FaceRectangle>();



    public static void main(String[] args) {

        final String mrl = "dance_redacted1.mp4";

        NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(), "lib");
        Native.loadLibrary(RuntimeUtil.getLibVlcLibraryName(), LibVlc.class);

        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new DirectMediaPlayerComponentTest().start(mrl);
            }
        });
    }

    private DirectMediaPlayerComponentTest() {
        JFrame frame = new JFrame("vlcj Direct Media Player Component Test");


        panel = new JPanel() {
            @Override
            protected void paintComponent(Graphics g) {
                Graphics2D g2 = (Graphics2D)g;
                g2.setColor(Color.black);
                g2.fillRect(0, 0, getWidth(), getHeight());
                g2.drawImage(image, null, 0, 0);

             for ( FaceRectangle rec : recToDisplay ){ 
                  System.out.println(rec);     
                  g2.setColor(rec.getColor(rec.getId()));
                  g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
                  g2.draw(new Rectangle2D.Double((rec.getTop())*1000, (rec.getLeft())*1000, (rec.getWidth())*1000, (rec.getHeight())*1000));

            }            
            }
        };
        panel.setBackground(Color.black);
        panel.setOpaque(true);
        panel.setPreferredSize(new Dimension(width, height));
        panel.setMinimumSize(new Dimension(width, height));
        panel.setMaximumSize(new Dimension(width, height));

        image = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getDefaultConfiguration().createCompatibleImage(width, height);

        BufferFormatCallback bufferFormatCallback = new BufferFormatCallback() {
            public BufferFormat getBufferFormat(int sourceWidth, int sourceHeight) {
                return new RV32BufferFormat(width, height);
            }
        };

        mediaPlayerComponent = new DirectMediaPlayerComponent(bufferFormatCallback) {
            @Override
            protected RenderCallback onGetRenderCallback() {
                return new TestRenderCallbackAdapter();
            }
        };

        frame.setContentPane(panel);

        frame.setLocation(100, 100);
        frame.pack();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }


    //  Start playing a movie.

    private void start(String mrl) {
        // One line of vlcj code to play the media...
        mediaPlayerComponent.getMediaPlayer().playMedia(mrl);
    }

    private class TestRenderCallbackAdapter extends RenderCallbackAdapter {

        private TestRenderCallbackAdapter() {
            super(new int[width * height]);
        }

        @Override
        protected void onDisplay(DirectMediaPlayer mediaPlayer, int[] rgbBuffer) {
            // Simply copy buffer to the image and repaint
            image.setRGB(0, 0, width, height, rgbBuffer, 0, width);
            panel.repaint();

            //for (ArrayList<FaceRectangle> rec : rectFace){
            for ( FaceRectangle rec : recList ){
                recToDisplay.clear();
                recToDisplay.add(rec);
                panel.repaint();
                try {
                    Thread.sleep(512);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}