Video receiving applet in JMF

Question

Hello,
I'm creating a webcam based video channel system but i have problems receiving the signal from the pc in the server. I send it using JMStudio but i'm unable to interpret.
This is the code i use:
import java.applet.*;
import javax.swing.*;
import javax.swing.event.*;
import java.io.*;
import java.awt.*;
import java.net.*;
import java.awt.event.*;
import java.util.Vector;
import javax.media.*;
import javax.media.rtp.*;
import javax.media.rtp.event.*;
import javax.media.rtp.rtcp.*;
import javax.media.protocol.*;
import javax.media.protocol.DataSource;
import javax.media.format.AudioFormat;
import javax.media.format.VideoFormat;
import javax.media.Format;
import javax.media.format.FormatChangeEvent;
import javax.media.control.BufferControl;
public class RecibeVideoApplet extends Applet implements ReceiveStreamListener, SessionListener
     String ip = "my ip"; // Estas direcciones variaran dependiendo del transmisor
     int puerto =0000;
     String puerto1;
     RTPManager rtpm = RTPManager.newInstance();
     Object datoSinc = new Object();
     boolean datoRecibido = false;
     Panel panelCam = new Panel(new BorderLayout());
     Button cerrar =new Button("Salir");
     Player player=null;
     // Funcion que inicializa el Applet
     public void init()
          // Recogemos el parametro de la pagina HTML
          ip = getParameter("IP");
          //puerto1 = getParameter("PUERTO");
          ///puerto = Integer.valueOf(puerto1).intValue();
          try
               System.out.println("Ip" +ip);
               InetAddress dirIp = InetAddress.getByName(ip);
               System.out.println("dirIP" +dirIp);
               SessionAddress dirLocal = new SessionAddress(InetAddress.getByName("000.000.000.000"),puerto);
               System.out.println("dirLocal" +dirLocal);
               SessionAddress dirDest = new SessionAddress(dirIp,puerto);
               rtpm.addSessionListener(this);
               rtpm.addReceiveStreamListener(this);
               rtpm.initialize(dirLocal);
               rtpm.addTarget(dirDest);          
          catch (Exception e)
               System.out.println("No se pudo crear la sesion RTP" + e.getMessage());
          // Esperamos a que lleguen los datos
          long then = System.currentTimeMillis();
          long periodoEspera = 60000; // esperamos como maximo 60segundos
          try{
          synchronized (datoSinc)
               while (!datoRecibido &&
                    System.currentTimeMillis() - then < periodoEspera)
               if (!datoRecibido)
                    System.err.println("Esperando datos RTP...");
               datoSinc.wait(1000);
          catch (Exception e) {}
          if (!datoRecibido) {
          System.err.println("No se ha recibido ningn dato RTP");
     // Funciones que esperan a que llegue un evento y avisan de ello
     public synchronized void update (SessionEvent evento)
          if (evento instanceof NewParticipantEvent)
               Participant participante = ((NewParticipantEvent)evento).getParticipant();
               System.out.println("Acaba de unirse un nuevo participante:"+ participante.getCNAME());
     public synchronized void update (ReceiveStreamEvent evento)
          RTPManager rtpm = (RTPManager)evento.getSource();
          Participant participante =evento.getParticipant();
          ReceiveStream stream = evento.getReceiveStream();
          if (evento instanceof NewReceiveStreamEvent)
               try
                    stream = ((NewReceiveStreamEvent)evento).getReceiveStream();
                    DataSource ds =stream.getDataSource();
                    // Creamos el player para visualizar el video
                    player = Manager.createRealizedPlayer(ds);
                    if (player == null)
                         return;
                    // Comenzamos la transmision
                    player.start();
                    // Cogemos el componente visual para a�adirlo al panel
                    Component comp;
               if ((comp = player.getVisualComponent()) == null)
                    return;
               panelCam.add("Center", comp);
               panelCam.add("South", cerrar);
               add("Center",panelCam);
               this.setSize(800,800);
               this.setVisible(true);
               //Avisamos al metodo inicializar de que hemos recibido datos
               synchronized (datoSinc)
                    datoRecibido = true;
                    datoSinc.notifyAll();
               catch (Exception e)
                    System.out.println("Error: " + e.getMessage());
                    return;
     // Metodo que utilizamos para poder cerrar la transmisi�n mediante un bot�n
     public boolean action(Event evt,Object arg)
          if(evt.target.equals(cerrar))
               close();
          else
          return super.action (evt,arg);
          return true;
     // Metodo para cerrar el player de la transmision
     public void close()
     try
          player.close();
          rtpm.removeTargets("Cerrando sesion desde RecibeVideo");
          rtpm.dispose();
          rtpm = null;
     catch (Exception e)
               System.out.println("No se ha podido cerrar correctamente");
     //Metodo para destruir el applet
     public void destroy()
The names are in spanish but i think that the main function can be understood
and this is the output i get from the webpage:
java.lang.Error: Unresolved compilation problems:
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     ReceiveStreamListener cannot be resolved to a type
     SessionListener cannot be resolved to a type
     RTPManager cannot be resolved to a type
     RTPManager cannot be resolved
     Player cannot be resolved to a type
     SessionAddress cannot be resolved to a type
     SessionAddress cannot be resolved to a type
     SessionAddress cannot be resolved to a type
     SessionAddress cannot be resolved to a type
     rtpm cannot be resolved
     rtpm cannot be resolved
     rtpm cannot be resolved
     rtpm cannot be resolved
     SessionEvent cannot be resolved to a type
     NewParticipantEvent cannot be resolved to a type
     Participant cannot be resolved to a type
     NewParticipantEvent cannot be resolved to a type
     ReceiveStreamEvent cannot be resolved to a type
     RTPManager cannot be resolved to a type
     RTPManager cannot be resolved to a type
     Participant cannot be resolved to a type
     ReceiveStream cannot be resolved to a type
     NewReceiveStreamEvent cannot be resolved to a type
     NewReceiveStreamEvent cannot be resolved to a type
     DataSource cannot be resolved to a type
     player cannot be resolved
     Manager cannot be resolved
     player cannot be resolved
     player cannot be resolved
     player cannot be resolved
     player cannot be resolved
     rtpm cannot be resolved
     rtpm cannot be resolved
     rtpm cannot be resolved
     at RecibeVideoApplet.<init>(RecibeVideoApplet.java:12)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
     at java.lang.reflect.Constructor.newInstance(Unknown Source)
     at java.lang.Class.newInstance0(Unknown Source)
     at java.lang.Class.newInstance(Unknown Source)
     at sun.applet.AppletPanel.createApplet(Unknown Source)
     at sun.plugin.AppletViewer.createApplet(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
java.lang.Error: Unresolved compilation problems:
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     The import javax.media cannot be resolved
     ReceiveStreamListener cannot be resolved to a type
     SessionListener cannot be resolved to a type
     RTPManager cannot be resolved to a type
     RTPManager cannot be resolved
     Player cannot be resolved to a type
     SessionAddress cannot be resolved to a type
     SessionAddress cannot be resolved to a type
     SessionAddress cannot be resolved to a type
     SessionAddress cannot be resolved to a type
     rtpm cannot be resolved
     rtpm cannot be resolved
     rtpm cannot be resolved
     rtpm cannot be resolved
     SessionEvent cannot be resolved to a type
     NewParticipantEvent cannot be resolved to a type
     Participant cannot be resolved to a type
     NewParticipantEvent cannot be resolved to a type
     ReceiveStreamEvent cannot be resolved to a type
     RTPManager cannot be resolved to a type
     RTPManager cannot be resolved to a type
     Participant cannot be resolved to a type
     ReceiveStream cannot be resolved to a type
     NewReceiveStreamEvent cannot be resolved to a type
     NewReceiveStreamEvent cannot be resolved to a type
     DataSource cannot be resolved to a type
     player cannot be resolved
     Manager cannot be resolved
     player cannot be resolved
     player cannot be resolved
     player cannot be resolved
     player cannot be resolved
     rtpm cannot be resolved
     rtpm cannot be resolved
     rtpm cannot be resolved
     at RecibeVideoApplet.<init>(RecibeVideoApplet.java:12)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
     at java.lang.reflect.Constructor.newInstance(Unknown Source)
     at java.lang.Class.newInstance0(Unknown Source)
     at java.lang.Class.newInstance(Unknown Source)
     at sun.applet.AppletPanel.createApplet(Unknown Source)
     at sun.plugin.AppletViewer.createApplet(Unknown Source)
     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
If anyone knows how to solve the problems i have, please let me know.
Thank you

Answer 1

MHP and OCAP only use JMF 1.0, which does not include support for capturing video. You will not be able to do this in any current MHP/OCAP imlementation that I know of.
Steve.