Transmitting audio and video using JMStudio

Question

1. Can any one give me the procedure to send audio and video from one system to another using JMStudio .. I am getting an exception like : "Unable to create Session Manager" .. (Note : I used the same Port address on both the systems)
2. Also in one of the programs for RTP transmission i came across a statement like :
URL l="rtp://123.12.123.1:5000/audio/1
123.12.123.1 denotes IP Address to which the data is to be sent..
5000 is the Port address..
What does the part "audio/1" mean..
Thanks in advance..

Answer 1

Then one more doubt.. Cant we merge the audio and video and then send the merged media through RTP.. Yes! using 'Manager.createMergingDataSource(DataSource[])'
If we can send then what is that I must use in place of '{color:#ff6600}audio{color}' in
URL l=rtp://123.12.123.1:15000/audioI am sorry, I don't know...... actually I have never send Audio/Video using rtp-urls, rather I have always used RTPManager. But, yes on the receiver side these rtp urls come in handy and you just have to createPlayer using these rtp MediaLoactors, all locators which I gave in previous reply work for receiver. Perhaps, rtp urls are meant for receiving only, not for transmitting and that makes sense.
For transmitting I think following code (which is severly stripped down version of AVTransmit2 and written hastily) can help you get started:
import java.awt.BorderLayout;
import java.net.InetAddress;
import javax.media.*;
import javax.media.control.MonitorControl;
import javax.media.format.VideoFormat;
import javax.media.protocol.ContentDescriptor;
import javax.media.rtp.*;
import javax.swing.*;
* @author talha
public class RTPexp extends JFrame {
    Processor p = null;
    RTPManager manager;
    JPanel jp1, jp2, jp3;
    JButton jb1, jb2;
    public RTPexp() {
        setSize(300,400);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        try {
            jp1 = new JPanel(new BorderLayout());
            jp2 = new JPanel(new BorderLayout());
            jp3 = new JPanel(new BorderLayout());
            this.setContentPane(jp1);
            jb1 = new JButton("Start");
            jb2 = new JButton("Stop");
            jb1.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    jb1ActionPerformed();
            jb2.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    jb2ActionPerformed();
            jp2.add(jb1, BorderLayout.WEST);
            jp2.add(jb2, BorderLayout.EAST);
            jp1.add(jp2, BorderLayout.SOUTH);
            jp1.add(jp3, BorderLayout.CENTER);
            p = Manager.createProcessor(new MediaLocator("vfw://0"));   // video capture device locator
            p.configure();
            Thread.sleep(2000);
            p.setContentDescriptor(new ContentDescriptor(ContentDescriptor.RAW_RTP));
            p.getTrackControls()[0].setFormat(new VideoFormat(VideoFormat.JPEG_RTP)); //transmitting in Jpeg/rtp, there can be errors here....
            p.realize();
            Thread.sleep(2000);
            manager = RTPManager.newInstance();
            manager.initialize(new SessionAddress(InetAddress.getLocalHost(), SessionAddress.ANY_PORT)); // initializing rtp manager, ANY_PORT allows receiving on the same system
            manager.addTarget(new SessionAddress(InetAddress.getByName("192.168.1.3"), 3000)); // the receivers address and port
            validate();
        } catch (Exception ex) {
            ex.printStackTrace();
    private void jb1ActionPerformed() {
        try {
            p.start();
            SendStream s = manager.createSendStream(p.getDataOutput(), 0);
            s.start();
            MonitorControl mc = (MonitorControl) p.getControl("javax.media.control.MonitorControl");
            Control controls[] = p.getControls();
            boolean flag = false;           // the next statements to search the right monitor control, which happens to be the 2nd one....
            for (int i = 0; i < controls.length; i++) {
                if (controls[i] instanceof MonitorControl) {
                    if (flag) {
                        mc = (MonitorControl) controls;
mc.setEnabled(true);
if (mc.getControlComponent() != null) {
jp3.add("Center", mc.getControlComponent());
} else {
flag = true;
if (p.getControlPanelComponent() != null) {
jp3.add(p.getControlPanelComponent(), BorderLayout.SOUTH);
validate();
} catch (Exception ex) {
ex.printStackTrace();
private void jb2ActionPerformed() {
p.stop();
p.close();
jp3.removeAll();
jp3.validate();
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new
Runnable() {
public void run() {
new RTPexp().setVisible(true);
Thanks!