Not able to transmit Video

Question

Hi,
I m new to JMF.We are using MjSIP and i want to transmit video through JMF to other machine.The problem is the implementation which is given in MjSIP isnt working .
I mean whenever i execute the implementation given in mjSIP like JVisualReceiver etc.Both machines hangs coz they are not being able to realize the processor.I have successfully run the Player but i m getting problem in realizing the processor.
Although we are using the same processor.realize() method given in JMF Api.
Even i m not being able to run this sample given by SUN.
package local.ua;
* @(#)VideoTransmit.java     1.7 01/03/13
* Copyright (c) 1999-2001 Sun Microsystems, Inc. All Rights Reserved.
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
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* redistribute the Software for such purposes.
import java.awt.*;
import javax.media.*;
import javax.media.protocol.*;
import javax.media.protocol.DataSource;
import javax.media.format.*;
import javax.media.control.TrackControl;
import javax.media.control.QualityControl;
import java.io.*;
public class VideoTransmit {
    // Input MediaLocator
    // Can be a file or http or capture source
    private MediaLocator locator;
    private String ipAddress;
    private String port;
    private Processor processor = null;
    private DataSink  rtptransmitter = null;
    private DataSource dataOutput = null;
    public VideoTransmit(MediaLocator locator,
                String ipAddress,
                String port) {
     this.locator = locator;
     this.ipAddress = ipAddress;
     this.port = port;
     * Starts the transmission. Returns null if transmission started ok.
     * Otherwise it returns a string with the reason why the setup failed.
    public synchronized String start() {
     String result;
     // Create a processor for the specified media locator
     // and program it to output JPEG/RTP
     result = createProcessor();
     if (result != null)
         return result;
     // Create an RTP session to transmit the output of the
     // processor to the specified IP address and port no.
     result = createTransmitter();
     if (result != null) {
         processor.close();
         processor = null;
         return result;
     // Start the transmission
     processor.start();
     return null;
     * Stops the transmission if already started
    public void stop() {
     synchronized (this) {
         if (processor != null) {
          processor.stop();
          processor.close();
          processor = null;
          rtptransmitter.close();
          rtptransmitter = null;
    private String createProcessor() {
     if (locator == null)
         return "Locator is null";
     DataSource ds;
     DataSource clone;
     try {
         ds = Manager.createDataSource(locator);
     } catch (Exception e) {
         return "Couldn't create DataSource";
     // Try to create a processor to handle the input media locator
     try {
         processor = Manager.createProcessor(ds);
     } catch (NoProcessorException npe) {
         return "Couldn't create processor";
     } catch (IOException ioe) {
         return "IOException creating processor";
     // Wait for it to configure
     boolean result = waitForState(processor, Processor.Configured);
     if (result == false)
         return "Couldn't configure processor";
     // Get the tracks from the processor
     TrackControl [] tracks = processor.getTrackControls();
     // Do we have atleast one track?
     if (tracks == null || tracks.length < 1)
         return "Couldn't find tracks in processor";
     boolean programmed = false;
     // Search through the tracks for a video track
     for (int i = 0; i < tracks.length; i++) {
         Format format = tracks.getFormat();
     if ( tracks[i].isEnabled() &&
          format instanceof VideoFormat &&
          !programmed) {
          // Found a video track. Try to program it to output JPEG/RTP
          // Make sure the sizes are multiple of 8's.
          Dimension size = ((VideoFormat)format).getSize();
          float frameRate = ((VideoFormat)format).getFrameRate();
          int w = (size.width % 8 == 0 ? size.width :
                    (int)(size.width / 8) * 8);
          int h = (size.height % 8 == 0 ? size.height :
                    (int)(size.height / 8) * 8);
          VideoFormat jpegFormat = new VideoFormat(VideoFormat.JPEG_RTP,
                                   new Dimension(w, h),
                                   Format.NOT_SPECIFIED,
                                   Format.byteArray,
                                   frameRate);
          tracks[i].setFormat(jpegFormat);
          System.err.println("Video transmitted as:");
          System.err.println(" " + jpegFormat);
          // Assume succesful
          programmed = true;
     } else
          tracks[i].setEnabled(false);
     if (programmed)
     return "Couldn't find video track";
     // Set the output content descriptor to RAW_RTP
     ContentDescriptor cd = new ContentDescriptor(ContentDescriptor.RAW_RTP);
     processor.setContentDescriptor(cd);
     // Realize the processor. This will internally create a flow
     // graph and attempt to create an output datasource for JPEG/RTP
     // video frames.
     result = waitForState(processor, Controller.Realized);
     if (result == false)
     return "Couldn't realize processor";
     // Set the JPEG quality to .5.
     setJPEGQuality(processor, 0.5f);
     // Get the output data source of the processor
     dataOutput = processor.getDataOutput();
     return null;
// Creates an RTP transmit data sink. This is the easiest way to create
// an RTP transmitter. The other way is to use the RTPSessionManager API.
// Using an RTP session manager gives you more control if you wish to
// fine tune your transmission and set other parameters.
private String createTransmitter() {
     // Create a media locator for the RTP data sink.
     // For example:
     // rtp://129.130.131.132:42050/video
     String rtpURL = "rtp://" + ipAddress + ":" + port + "/video";
     MediaLocator outputLocator = new MediaLocator(rtpURL);
     // Create a data sink, open it and start transmission. It will wait
     // for the processor to start sending data. So we need to start the
     // output data source of the processor. We also need to start the
     // processor itself, which is done after this method returns.
     try {
     rtptransmitter = Manager.createDataSink(dataOutput, outputLocator);
     rtptransmitter.open();
     rtptransmitter.start();
     dataOutput.start();
     } catch (MediaException me) {
     return "Couldn't create RTP data sink";
     } catch (IOException ioe) {
     return "Couldn't create RTP data sink";
     return null;
* Setting the encoding quality to the specified value on the JPEG encoder.
* 0.5 is a good default.
void setJPEGQuality(Player p, float val) {
     Control cs[] = p.getControls();
     QualityControl qc = null;
     VideoFormat jpegFmt = new VideoFormat(VideoFormat.JPEG);
     // Loop through the controls to find the Quality control for
     // the JPEG encoder.
     for (int i = 0; i < cs.length; i++) {
     if (cs[i] instanceof QualityControl &&
          cs[i] instanceof Owned) {
          Object owner = ((Owned)cs[i]).getOwner();
          // Check to see if the owner is a Codec.
          // Then check for the output format.
          if (owner instanceof Codec) {
          Format fmts[] = ((Codec)owner).getSupportedOutputFormats(null);
          for (int j = 0; j < fmts.length; j++) {
               if (fmts[j].matches(jpegFmt)) {
               qc = (QualityControl)cs[i];
               qc.setQuality(val);
               System.err.println("- Setting quality to " +
                         val + " on " + qc);
               break;
          if (qc != null)
          break;
* Convenience methods to handle processor's state changes.
private Integer stateLock = new Integer(0);
private boolean failed = false;
Integer getStateLock() {
     return stateLock;
void setFailed() {
     failed = true;
private synchronized boolean waitForState(Processor p, int state) {
     p.addControllerListener(new StateListener());
     failed = false;
     // Call the required method on the processor
     if (state == Processor.Configured) {
     p.configure();
     } else if (state == Processor.Realized) {
     p.realize();
     // Wait until we get an event that confirms the
     // success of the method, or a failure event.
     // See StateListener inner class
     while (p.getState() < state && !failed) {
     synchronized (getStateLock()) {
          try {
          getStateLock().wait();
          } catch (InterruptedException ie) {
          return false;
     if (failed)
     return false;
     else
     return true;
* Inner Classes
class StateListener implements ControllerListener {
     public void controllerUpdate(ControllerEvent ce) {
     // If there was an error during configure or
     // realize, the processor will be closed
     if (ce instanceof ControllerClosedEvent)
          setFailed();
     // All controller events, send a notification
     // to the waiting thread in waitForState method.
     if (ce instanceof ControllerEvent) {
          synchronized (getStateLock()) {
          getStateLock().notifyAll();
* Sample Usage for VideoTransmit class
public static void main(String [] args) {
     // We need three parameters to do the transmission
     // For example,
     // java VideoTransmit file:/C:/media/test.mov 129.130.131.132 42050
     if (args.length < 3) {
     System.err.println("Usage: VideoTransmit <sourceURL> <destIP> <destPort>");
     System.exit(-1);
     // Create a video transmit object with the specified params.
     VideoTransmit vt = new VideoTransmit(new MediaLocator(args[0]),
                         args[1],
                         args[2]);
     // Start the transmission
     String result = vt.start();
     // result will be non-null if there was an error. The return
     // value is a String describing the possible error. Print it.
     if (result != null) {
     System.err.println("Error : " + result);
     System.exit(0);
     System.err.println("Start transmission for 60 seconds...");
     // Transmit for 60 seconds and then close the processor
     // This is a safeguard when using a capture data source
     // so that the capture device will be properly released
     // before quitting.
     // The right thing to do would be to have a GUI with a
     // "Stop" button that would call stop on VideoTransmit
     try {
     Thread.currentThread().sleep(60000);
     } catch (InterruptedException ie) {
     // Stop the transmission
     vt.stop();
     System.err.println("...transmission ended.");
     System.exit(0);
I m getting this exception
Failed to realize: com.sun.media.ProcessEngine@bd0108
Error: Unable to realize com.sun.media.ProcessEngine@bd0108
Error : Couldn't realize processor

Answer 1

Finaly i was able to solve the problem.The other machine was having some firewall blocking the receiver.