记录和显示视频JMF

Question

我想从网络摄像机录制视频，看看我在屏幕上录制的内容。单独来说，我既可以在屏幕上看到它，也可以录制视频，但不能两者兼而有之。录制时，jpanel没有更新。它不会报告任何错误。我该如何解决这个问题?非常感谢。对不起，我的英语不好。

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;
    }
}

Answer 1

尝试使用jmapps的jmstudio源代码，好的代码在那里。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加载播放器。

如果你不从播放器中的文件中读取，它在JMF中不起作用。上线14.5年，JMF直播没有问题