视频流不能在互联网或本地网络上工作

Question

我在一个项目上工作，需要实现从服务器上的网络摄像头到远程客户端小程序直播视频流。

我有一个代码，用于通过服务器上的JMF从网络摄像头捕获实况流，并将流部署到rtp上&一个从rtp地址接收流的applet，然后将其播放到其中。

但问题是，它只能在我自己的pc (服务器)上工作&不能在本地网络上工作(它加载applet但不运行视频播放器)。

服务器代码：

public class Streaming_Server {

    /**
     * @param args the command line arguments
     */
    private static String PORT = "10000";
    private static InetAddress addr;
    static final Format[] FORMATS = { new VideoFormat("rgb") };
    static final ContentDescriptor CONTENT_DESCRIPTOR = new ContentDescriptor("raw.rtp");

    public static void main(String[] args) throws IOException, NoDataSourceException, NoProcessorException, CannotRealizeException, NoDataSinkException {
        // TODO code application logic here
        try
        {
            addr = InetAddress.getLocalHost();
            String ipAddr = addr.getHostAddress();
            String hostname = addr.getHostName();
            System.out.println("Your IP is " + ipAddr);
            System.out.println("Your Host Name is " + hostname);
        }
        catch (UnknownHostException e){}


        CaptureDeviceInfo webcamInfooo = new CaptureDeviceInfo("Camera", new MediaLocator("vfw://0"), null);
        MediaLocator camDeviceMediaLocator = webcamInfooo.getLocator();
        DataSource source = Manager.createDataSource(camDeviceMediaLocator);
        Processor mediaProcessor = Manager.createRealizedProcessor(new ProcessorModel(source, FORMATS, CONTENT_DESCRIPTOR));
        //MediaLocator outputMediaLocator = new MediaLocator("rtp://" + addr.getHostAddress() + ":" + PORT + "/video");
        MediaLocator outputMediaLocator = new MediaLocator("rtp://192.168.1.4:20000/video");
        DataSink dataSink = Manager.createDataSink(mediaProcessor.getDataOutput(), outputMediaLocator);

        mediaProcessor.start();
        dataSink.open();
        dataSink.start();
    }
}

客户端代码：

public class Streaming_Client extends Applet implements ControllerListener {

    /**
     * Initialization method that will be called after the applet is loaded into
     * the browser.
     */
    Player player = null;
    private MediaLocator mediaLocator;
    private static String PORT = "10000";
    private static InetAddress addr;

    public void init() {
        // TODO start asynchronous download of heavy resources
        //mediaLocator = new MediaLocator("rtp:/192.168.1.4:10000/video");
        mediaLocator = new MediaLocator("rtp:/192.168.1.4:20000/video");
        setLayout(new BorderLayout());
        try {
            player = Manager.createPlayer(mediaLocator);
            player.addControllerListener(this);
        } catch (IOException | NoPlayerException ex) {
            Logger.getLogger(Streaming_Client.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    public void start(){
        player.start();
    }

    public void stop(){
        player.stop();
        player.deallocate();
    }

    public void destroy(){
        player.close();
    }
    // TODO overwrite start(), stop() and destroy() methods

    @Override
    public void controllerUpdate(ControllerEvent ce) {
        if ((ce instanceof RealizeCompleteEvent))
        {
        Component comp;
        if ((comp = this.player.getVisualComponent()) != null)
            add("Center", comp);
        if ((comp = this.player.getControlPanelComponent()) != null)
            add("South", comp);
        validate();
        }
    }
}

Answer 1

经过研究，我发现服务器中的MediaLocator取的是的目的IP，而不是源IP。

这是一件烦人的事情，因为你必须知道你在哪里流媒体。

所以，在这次编辑之后..

CaptureDeviceInfo webcamInfooo = new CaptureDeviceInfo("Camera", new MediaLocator("vfw://0"), null);
MediaLocator camDeviceMediaLocator = webcamInfooo.getLocator();
DataSource source = Manager.createDataSource(camDeviceMediaLocator);
Processor mediaProcessor = Manager.createRealizedProcessor(new ProcessorModel(source, FORMATS, CONTENT_DESCRIPTOR));
//MediaLocator outputMediaLocator = new MediaLocator("rtp://" + addr.getHostAddress() + ":" + PORT + "/video");
MediaLocator outputMediaLocator = new MediaLocator("rtp://192.168.1.6:20000/video");
DataSink dataSink = Manager.createDataSink(mediaProcessor.getDataOutput(), outputMediaLocator);

我只能通过内部网流式传输从192.168.1.4到192.168.1.6的实时视频捕获。

但是我到现在还不知道如何在互联网上流媒体，因为我必须分配远程pc的ip地址。