Re: video transmission with JMF

Dear Friends,
A Good Day to all of you'll. I used the AVTransmit2 file to do a Multicasting simulation.
I used an .avi video sample. The multicast works fine, but the only problem is that, the sound doesnt play when the video is being shown. What should i do to get the sound up and running ?
Your points will be really helpful for me.
Thank You.
Regards
Ganesan Periakarruppan
Message was edited by:
Ganesh4144

You need to open 2 rtp sessions from the client side:
One for the audiotrack.
One for the videotrack.
bye .

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Dear friends
I want to develop a program which can capture video from my web cam.
(resolution 640x480 frame rate 20 frames/second) with JMF.
If you have any suggestions and references please help me with this.
Thank you in advance.

ac09 wrote:
..If you have any suggestions..Read the posts to the [JMF forum|http://forums.sun.com/forum.jspa?forumID=28] where this topic has been discussed many (many) times. Make future posts re. JMF to the JMF forum.
.. and references .. JMF [Code Samples and Apps|http://java.sun.com/javase/technologies/desktop/media/jmf/reference/codesamples/index.html] .
Thank you in advance.No worries.

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Cross-posted
http://forum.java.sun.com/post.jsp?forum=54&thread=456420&message=2083138&reply=true

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I am doing an application for sending video streams to multiple clients at the same time. So am using multithreading. I have the following codes to do the transmission. When I am using it with one thread only it is working fine. But when I use it with more threads for multiple transmissions I am have an error saying �Unable to realize com.sun.media.ProcessEngine�. Can anyone help me plz.
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.*;
import java.lang.Thread;
public class VideoTransmitThread extends Thread{
// 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 VideoTransmitThread(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.
//run method for the thread
public void run( ) {
     String result;
     // Create a processor for the specified media locator
     // and program it to output JPEG/RTP
     result =createProcessor();
     if (result != null)
     System.out.println("error: "+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;
     System.out.println("error: "+result);
     System.exit(0);
     try {
     Thread.sleep(1000); // 100 msec
     } catch (InterruptedException e) {
     return;
     // Start the transmission
     processor.start();
* Stops the transmission if already started
public void stop1() {
     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 VideoTransmitNew class
public static void main(String [] args) {
     // We need three parameters to do the transmission
     // For example,
     // java VideoTransmitNew file:/C:/media/test.mov 129.130.131.132 42050
     System.err.println("Start transmission");
     //Create a video transmit object with the specified params.
MediaLocator URL=new MediaLocator("file:///C:/media/test.mpg");
//Am using 3 different threads.
     new VideoTransmitThread(URL,"CSELAB12PC10","9876").start();
     new VideoTransmitThread(URL," CSELAB12PC11","9870").start();
     new VideoTransmitThread(URL," CSELAB12PC12","9690").start();
     //close all transmission before quiting.

Hm, that was my silver bullet. Other than doing an uninsall and then installing Presenter again, you may need to reach out to Adobe and see if they can identify what could be causing this.

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/usr/lib/gcc-lib/i386-redhat-linux/2.96/.../../../crt1.0 : In function '_start' :
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Duplicate; reply to http://forum.java.sun.com/thread.jsp?forum=54&thread=478434

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Presumably, you're using the following sample code to create the AVI:
[http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/JpegImagesToMovie.html]
And you're using the following sample code(or something similar) to send the AVI via RTP:
[http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/VideoTransmit.html]
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Hi. I have this problem. I'm projecting (not building yet) a system. In this system i have a Local Computer, a server, and a Web Page (JSP). The Local Computer is going to capture video from a WebCam with JMF. This videos is going to be passed to the server by RTP Control. A Web Page (JSP) is gonna acess the server to get this video and show it (Real Time Streaming).
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no one ????

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Hello Peter,
Is there any way to ... establish a video chat with an MSN Messenger user?
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Hi everyone,
I am trying to transmit audio/video data using JMF, but when I do, I get the next error:
Failed to create Data Source for vfw://0
Exception.
Error instantiating class: com.sun.media.protocol.vwf.DataSource:
java.io.IOException: Could not connect to capture deviceThe same error occurs when I try to send video using the JMStudio.
Can anyone help me out?
Cheers

Your web cam is either (1) not connected (2) not working (3) being used by something else (4) not a VFW device, or you don't have JMF installed correctly, are trying to use JMF on a 64-bit OS, or something else >crazy like that.Ok, so it's probably not 1-4... still leaves any of those other suggestions...
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_Cris_ wrote:
I want to know at least if this it's possible with jmf or should i start looking for another solution ? and do you have any examples of such projects or examples of forwarding the stream with jmf .... You can do what with JMF. Once you receive the stream, it's just a video stream. You can do anything you want with it...display it, record it, or send it as an RTP stream.

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Best regards,
ANeto

Hi,
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transfer it over to the DSS, which can further be accessed by any client
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http://72.5.124.102/thread.jspa?messageID=10177842
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Moreover, in the options before capturing video, the encoding is in RVB instead of YUV before with the "HP webcam".
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java.lang.ArrayIndexOutOfBoundsException: 0 >= 0
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josy

You probably want to remove the crust from your web cam if you expect it to work. Most things that are encrusted aren't in the best of shape...
JMF connects to web cameras by wrapping around native interfaces. If the JMStudio isn't able to use your web cam, it could mean a number of things...your web cam isn't compliant with the version of the interfaces (VFW and DirectShow, I believe) that JMF is wrapping around, the web cam doesn't output any formats JMF can use, etc.
But if JMStudio can't use your web cam sucessfully, 99% of the time that means your web cam isn't going to work with JMF... unless you want to code support for it yourself.

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Creative webcam live should work, most webcams will work... at least under Windows. I've 2 older creative webcams that work under Windows.
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regards,
Owen

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hello,
i'm trying to create a J2SE VoIP app with JMF. is it feasible?
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i've done the SIP session managing with JSIP. now i need to send and receive RTP data.
i've done this for the receiver
url= "rtp://" + IP + ":" + port + "/audio/16";
mrl= new MediaLocator(url);
player = Manager.createPlayer(mrl);
player.realize();
// wait for realizing
while (player.getState() != Player.Realized){
     try
Thread.sleep(10);
} catch (InterruptedException e)
e.printStackTrace();
player.start();
with IP is the other party IP specified in the SDP, and the Port is the port specified in the SDP too.
with wireshark, i've seen that RTCP is seen (Receiver Report, Source Description), and RTCP replies are received (Sender Report, Source Description), but RTP data is not received.
i realize that JMF open the same local port as the port specified in the MediaLocator. while actually in my INVITE SDP, i tell the other party a different port. might this be the problem that i don't receive any RTP data?
Thank you.

Hey,
No, the loss of packets isn't something you can control... you lose a packet, you lose a packet. The different encodings could have an affect on the impact of the packet loss, however, but the actual loss of the packet is out of everyone's hands. Even God loses packets as they travel on the wire...Well, I went again to Wiki to look for that page and you are right, I am wrong, it didn't say anything about packet loss, but it was referring to the call distortion and wrongly concluded something about the packets.
Ummmm, maybe. The issue isn't as simple as knowing the public IP address of a client behind a NAT, it's also a matter of traversing the NAT itself. But if the SIP UAS handles all of that, then yes, you should be fine.after putting it to the test, I'm really confused...
I'll try to lay it out so it would make sense and if that wont work I'll post my code here. there is just a lot of it in a few classes.
This is tested with one way streaming!
*1.* I've been trying to transmit audio and video within my home LAN, I've managed to send from one computer to the other, from beginning to end.
This is what I receive on the callee computer in my home LAN:
Participant added to list: ACER-LAPTOP/10.0.0.2
- A new participant had just joined: TacB0sS@Acer-LapTop
New Stream Event received: StreamMappedEvent
Stream: com.sun.media.rtp.RecvSSRCInfo@13e6346
Participant: com.sun.media.rtp.RTPRemoteSourceInfo@1cb374f
Source: RTPManager
     SSRCCache com.sun.media.rtp.SSRCCache@cc9d70
     Dataport 33444
     Controlport 33445
     Address 10.0.0.1
     RTPForwarder com.sun.media.rtp.util.PacketForwarder@17456bc
     RTPDemux com.sun.media.rtp.RTPDemultiplexer@ea85b4
New Stream Event received: NewReceiveStreamEvent
Stream: com.sun.media.rtp.RecvSSRCInfo@13e6346
Participant: com.sun.media.rtp.RTPRemoteSourceInfo@1cb374f
Source: RTPManager
     SSRCCache com.sun.media.rtp.SSRCCache@cc9d70
     Dataport 33444
     Controlport 33445
     Address 10.0.0.1
     RTPForwarder com.sun.media.rtp.util.PacketForwarder@17456bc
     RTPDemux com.sun.media.rtp.RTPDemultiplexer@ea85b4
new stream arrived fromcom.sun.media.rtp.RTPRemoteSourceInfo@1cb374f
- Recevied new RTP stream: JPEG/RTP*2.* But when I try to transmit to my friends computer, which is far far away... I do receive NewParticipantEvent, and I do get StreamMappedEvent, but no NewReceivedStreamEvent. sometimes I received an InactiveReceivedStreamEvent but to the caller computer, not to the callee. I thought perhaps the log would help:
This is what I get when I try to call my friends remote computer, on his computer:
Participant added to list: xx.xx.xx.xx.bb.netvision.net.il/xx.xx.xx.xx
- A new participant had just joined: TacB0sS@dell-laptop
New Stream Event received: StreamMappedEvent
Stream: com.sun.media.rtp.RecvSSRCInfo@198a455
Participant: com.sun.media.rtp.RTPRemoteSourceInfo@aa37a6
Source: RTPManager
SSRCCache com.sun.media.rtp.SSRCCache@12b7eea
Dataport 33444
Controlport 33445
Address 192.168.2.101
RTPForwarder com.sun.media.rtp.util.PacketForwarder@99353f
RTPDemux com.sun.media.rtp.RTPDemultiplexer@76e369
And this is what I get on my computer when I call my friends:
New Stream Event received: InactiveReceiveStreamEvent
Stream: null
Participant: com.sun.media.rtp.RTPRemoteSourceInfo@7b7b11
Source: RTPManager
     SSRCCache com.sun.media.rtp.SSRCCache@cc9d70
     Dataport 33444
     Controlport 33445
     Address 10.0.0.1
     RTPForwarder com.sun.media.rtp.util.PacketForwarder@17456bc
     RTPDemux com.sun.media.rtp.RTPDemultiplexer@ea85b4This is really bigger then me, we've tried to play a bit with configuration, but I just don't see the point, some events are received some are not...
What am I missing?
Thanks,
Adam.
Edited by: Adam-Z. on Jun 14, 2010 7:34 PM

How to use JFFmpeg with JMF

Hi ,
I am trying to use Jffmpeg with JMF to extend the supported format in JMF. I added jffmpeg-1.1.0.jar in class path variable.And I also made necessary changes to JMF Registry for JFFMPEG given in following url:
http://jffmpeg.sourceforge.net/download.html
But I could not play any mp4 video with JMF Studio.
So,can any one help me to solve this problem?
Thanks in advance
Regards,
Jyotirmoy

This may not help much re Solaris, but is worth putting up here for reference for others, whilst the code structure may also be useful anyway being close to pure java and as a solution that reads & saves every frame.
For Windows the folder in the zip includes Fobs4jmf, and - if necessary - setting preferences via the runjmstudio.bat should mean that the sun.bat will work for .mp4 and .flv video files.
See vid2jpg.zip at http://www.exactfutures.com/index02.htm which includes the java source.

Re: video transmission with JMF

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