Question

I’m working on a project that needs to implement live video streaming from webcam on server into applet on remote client.

I have a code for capturing live stream from webcam through JMF on server & deploy streaming on rtp & an applet that receive streaming from the rtp address then play it into it.

But the problem that it’s only working within my own pc (server) & doesn’t work over local network (it loads applet but doesn’t run the video player).

Server Code:

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();
    }
}

Client Code:

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

After some research, i found that MediaLocator in server takes the Destination IP not the source one.

It’s an annoying thing as you must know where you are streaming.

So, after this edit..

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);

i can stream live video capturing from 192.168.1.4 to 192.168.1.6 over Intranet only.

but i can’t find till now how to stream over internet as i must assign remote pc ip.