Java 录制并显示视频JMF

我想从网络摄像机上录制一段视频，看看我在屏幕上录制了什么。 就个人而言，我可以在使用网络摄像机的屏幕上看到它，也可以录制视频，但不能两者兼而有之。录制时，jpanel不会更新。它完全不报告错误。 我该如何解决这个问题？非常感谢你。对不起我的英语

public class NewJFrame extends javax.swing.JFrame implements ActionListener {

    private static boolean debugDeviceList = false;
    private static String defaultVideoDeviceName = "Microsoft WDM Image Capture";
    private static String defaultAudioDeviceName = "DirectSoundCapture";
    private static String defaultVideoFormatString = "size=640x480, encoding=yuv, maxdatalength=614400";
    private static String defaultAudioFormatString = "linear, 48000.0 hz, 16-bit, stereo, signed";
    private Timer timer = new Timer(40, this);
    private Player player;

    public NewJFrame(){
        initComponents();


        MediaLocator videoMediaLocator = new MediaLocator("vfw://0");
        DataSource myDataSource = Manager.createDataSource(videoMediaLocator);

        player = Manager.createPlayer(myDataSource);
        player.start();                                    

        DataSource videoDataSource = myDataSource;
        MediaLocator audioMediaLocator = new MediaLocator("dsound://");
        DataSource audioDataSource = null;

        audioDataSource = Manager.createDataSource(audioMediaLocator);

        DataSource dArray[] = new DataSource[2];
        dArray[0] = videoDataSource;
        dArray[1] = audioDataSource;
        DataSource mixedDataSource = null;

        mixedDataSource = Manager.createMergingDataSource(dArray);


        FileTypeDescriptor outputType = new FileTypeDescriptor(FileTypeDescriptor.MSVIDEO);

        Format outputFormat[] = new Format[2];
        outputFormat[0] = new VideoFormat(VideoFormat.INDEO50);
        outputFormat[1] = new AudioFormat(AudioFormat.GSM_MS);

        processorModel = new ProcessorModel(mixedDataSource, outputFormat, outputType);

        processor = Manager.createRealizedProcessor(processorModel);

        source = processor.getDataOutput();

        dest = new MediaLocator("file:.\\testcam.avi");

        dataSink = null;
        dataSinkListener = null;
        dataSink = Manager.createDataSink(source, dest);
        dataSinkListener = new MyDataSinkListener();
        dataSink.addDataSinkListener(dataSinkListener);
        dataSink.open();
    }                     

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         

        timer.start();
        dataSink.start();
        processor.start();
    }                                        

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        timer.stop();
        processor.stop();
        processor.close();

        dataSinkListener.waitEndOfStream(10);
        dataSink.close();

        Stdout.log("[all done]");
    }                                        

    public static void main(String args[]) {

        java.awt.EventQueue.invokeLater(new Runnable() {

            public void run() {
                    new NewJFrame().setVisible(true);
            }
        });
    }


    public BufferedImage grabFrameImage() {
        Image image = null;
        FrameGrabbingControl fGrabbingControl = null;
        if (player != null) {
            fGrabbingControl = (FrameGrabbingControl) player.getControl("javax.media.control.FrameGrabbingControl");
        }
        javax.media.Buffer buffer = fGrabbingControl.grabFrame();
        if (buffer != null) {
            image = new BufferToImage((VideoFormat) buffer.getFormat()).createImage(buffer);
        }
        if (image != null) {
            return (BufferedImage) image;
        }
        return null;
    }
}

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尝试使用jmapps jmstudio源代码，这是很好的代码。它是关于数据接收器和文件类型描述符的

概念：通过捕获设备从源记录，您需要一个数据接收器，然后加载系统，存储到文件，并从文件中加载播放器

如果不从播放器中读取文件，那么它在JMF中不起作用。已经在线14.5年了，JMF直播视频没有问题。

当我写player.start（）时；处理器之前=Manager.createRealizedProcessor（processorModel）；录像，但jPanel没有重新上漆，它一直是白色的。当我写player.start（）时；after processor=Manager.createRealizedProcessor（processorModel）；我看到什么记录了网络摄像机（jPanel repait），但当我打开avi文件时，它是空的。请帮助我任何人。我做错了什么？