Problems Presenting RTP Stream

Hi, I have a Video Streaming server developed in Java using
Java Media Framework and i need to see the videos with a flash
player, but i know that flash works with RTMP and JMF doesn't
support it. Is there any way to present the RTP Streams with flash?
Thanks.

Flash Player only supports streams delivered over the RTMP
protocol from Flash Media Server.

Similar Messages

Problem to create RTP stream on Linux by using JMF studio

Hello All,
I am trying to use JMStudio in order to create RTP stream
I have a problem with capture
I have run Jmfinit I got following messages
JavaSound Capture Supported = true
JavaSoundAuto: Committed ok
java.lang.Error: Can't open video card 0
java.lang.Error: Can't open video card 1
java.lang.Error: Can't open video card 2
java.lang.Error: Can't open video card 3
java.lang.Error: Can't open video card 4
java.lang.Error: Can't open video card 5
java.lang.Error: Can't open video card 6
java.lang.Error: Can't open video card 7
java.lang.Error: Can't open video card 8
java.lang.Error: Can't open video card 9
it seems to me that i have no directsoundcapture
therefore i can not create RTP package stream
How can i add direct sound capture to my capture devices.
is there any suggestion for this issue?
King regards
BEKIR BALCIK
ARGELA TECHNOLOGIES

In $ORACLE_BASE/admin you should have a directory structure for the viton1 instance : create a similar directory structure for the viton2 instance.
In the pfile subdirectory create the initviton2.ora file : you can copy it from initviton1.ora file and change all occurrences of viton1 to viton2.
At OS prompt : export ORACLE_SID=viton2, then
sqlplus /nolog
conn / as sysdba
startup nomount pfile=$ORACLE_BASE/admin/viton2/pfile/initviton2.ora
then CREATE DATABASE.....

Mixing audio RTP-Streams to conference

I'm trying to create a telefon conference applikation with jmf.
My problem:
I need to mix multiple incomming RTP-Streams (Audio/G711_ulaw) together into one outgoing RTP-Stream.
If I use a MergingDataSource i can get one DataSource with multiple Tracks, but i'm not able to send them out together over one RTP-Session.
Is there any way to do this?
I have also thaught about using RawBufferMux or WAVMux to multiplex the tracks included in the MergingDataSource ,but i cant find out how to use them.
Or is there an easyer way to create an conference over RTP?
I need to connect to cisco ip-phones, so i can only use the g711_ulaw codec.
Is there anyone out who can help me?

Im sorry, but I met this problem in past and find it impossible to resolve.
Im also thought about MergingDataSource, about Many2One class and more and more but nothing I could use. And nobody could answer this question in this forum half of year ago.
Oh, nearly forgot: it is possible to write merged streams to file, seems possible to write them into file and then to transmit it to net from file. But how to realize more than one Processor?..

To retransmit the rtp streams received

hi !
Program A transmits media data to another program B using RTPSessionMgr.What B has to do is send the recived streams to another receiver program C.This has to play the stream.That is I am trying to implement a client router server model.
So i maintained a session between A & B and also between B & C.Once NewReceiveStream event occurs at B,it retrieves the datasource from the stream and uses the createSendStream() method of the sessionmanager and sends to C.
My problem is that,C receives the audio and video streams.but never plays it.I get a pink screen for video and no audio.
can somebody help me out in pointing out my mistake or tell me a new strategy to implement this.
Actually,i have tried to use only datagram sockets on the router side.ie I created 2 sockets for B to receive data. and forwarded to C using 2 other sockets .And this did work.But the client does not know the sender details.I require to maintain the sender,receiver reports.So i went for the session manager(RTPManager /RTPSessionMgr).
kindly help.

Hi all!
Nice to meet ya, it very exciting that I got a project which will integrating the JMF and JXTA, it got RTP streams from the JMF framework and then sending it to the JXTA framework ,and sent to any peer in some groups to visualizing it .So some aspects of which is similar to yours ,would you mind add me to your contact list of MSN(my MSN account is:[email protected])

Setting RTP Stream Properties FrameRate/Size/Format

i am having problems setting the framerate on the rtp stream, i can set the quality of the jpeg, set the size of the stream, ive tried sizes 160X120, 320X240, 640x480.
as soon as i try to set the framerate it dies.
any ideas?

i am having problems setting the framerate on the rtp stream, i can set the quality of the jpeg, set the size of the stream, ive tried sizes 160X120, 320X240, 640x480.
as soon as i try to set the framerate it dies.
any ideas?

Rtp stream applet

Hi !!
I'm new in JMF. I'd like to play rtp stream on remote machine by using applet . I've searched a lot for making java applet which could receive rtp stream but coldn't find easy to understand tutorial code etc.
If you have any good links, please write it on forum or paste code.
Thank you for any answers !!!

an applet needs nothing great ...As someone who ..
- has deployed 1.1-1.4 compatible applets,
applets that interact with JavaScript, full (browser)
window applets, applets that load screensavers
and launch applications, web-started applets,
applets that change PLAF..
- has dealt with (literally) hundreds of applet
related problems on usenet, including the
investigation of applet bugs, and (particularly)
bugs caused by the MSVM.
..I can assure you.
1) Applets are anything but easy to deploy
successfully on the wilds of the internet.
2) As someone who has dealt a little with the
JMF, I can add that JMF applets add a whole
new level of complications to the mix.
Generally, the end user needs to have
pre-installed JMF in order to see JMF
based applets. Even then, the browser
might not detect the JMF classes.
It is generally far more sensible, and reliable,
to launch such projects in a free floating frame
using web-start.
Here is an example of a webstart launch.
<http://www.javasaver.com/testjs/jmf/#test3>
Note that any such web-start launch might be
optimised in a variety of ways (to download less).
The most obvious would be to use the
customizer.jar to make a cut-down version
that handles only the required sources (e.g. RTP)
and formats (e.g. MOV).

Simultaneous Recording in file and playing incoming rtp stream

I want to Simultaneous Recording in file and playing incoming rtp stream.I have cloned the data source. After cloning I created two data sinks and two processors.One processor/datasink is meant for recording the stream in a file and other processor/data sink is used to play the rtp through speaker.
But at a time I am only able to achieve one operation i.e either recording or playing.For recording into the wav file I have to put Thread.sleep(30) so that I can record the rtp into the file.During this time I am not able to play the audio through speaker.I also create separate thread but this does not help.
Please give suggestion on how to resolve this issue.

thanks for the reply, but I think I've already solved the problem.

Merging RTP streams and writing to file

I'm am in the middle of project using JMF i'm trying to merge incoming RTP streams and write them to file but i always have problem with formats. I have created processor with merged DataSource i set ContentDescriptor to different FileTypeDescriptors and tried to transcode the RTP streams to different formats, but always processor couldnt realize because of this error:
Unable to handle format: LINEAR, 8000.0 Hz, 16-bit, Mono, LittleEndian, Signed
Unable to handle format: LINEAR, 8000.0 Hz, 16-bit, Mono, LittleEndian, Signed
Could someone tell me what content descriptors i need to use and what formats to solve this problem. Any help will be appreciated.
Message was edited by:
kaligula

Hello,
Here is a procedure i wrote to write on text files the content of any table (and also generate the insert SQL order)
http://oracle.developpez.com/sources/?page=developpement#Extraction_table
You can download the script file here http://sheikyerbouti.developpez.com/src/extraction_table.zip
Hope this help you.
Francois

Problem transmitting RTP data

Hi all, I have made a little headway with the JMF thing on the front of streaming audio data, but am currently encountering a tough problem. So I got this little application that supposedly allows two parties to converse between two RTP streaming devices (PC's and otherwise). Basically the JMF enabled app takes care of voice processing and streaming, while call control (for locating peers) is handled by a third party. I got the application to the point where the app can receive RTP voice data and render it on my speaker but I just can't seem to make any progress on the transmitting part. Below is some of the details.
- Data transmission (both send and receive) to be handled by the same RTP session (RTPManager), i.e. using the same UDP port.
- Voice capture via microphone, into Processor.
- DataSource from Processor hooked up to SendStream created by RTPManager.
Pretty straight forward? The logic and problem are described below:
- Created Processor from MediaLocator acquired from CaptureDeviceInfo
- Configure Processor
- Set up the data format of the tracks
- Realize the Processor
- Start the Processor
- Using the same RTPManager, as the receive side, add the target
- Using the RTPManager, create a new SendStream using the DataSource from the Processor
- Start the send stream
- Using a packet sniffer to see if there are UDP RTP packets being sent but see nothing, I can see incoming RTP packets from the far end (which is a different application all together), but nothing streaming out from my end.
- When inquiring the getSourceTransmissionStats JMF reported thousands of packets sent!
So the Send Stream seemed to think it sent out lots of RTP data, but the sniffer (and the far end speaker) said otherwise. No error or exception were reported.
Any suggestion? I'd give anything to get access to some diagnostic facility inside the streaming logic to see where the problem could lie.

I've faced a similar problem, what I did was to use TWO session managers, one for transmitter and the other for receiver. I then used this objects in a container.
Both peer use the same port, and know each other's address.
For receiving data from the peer I do:
RTPManager mymgr = RTPManager.newInstance();
// add as listener to create players for each incoming stream
mymgr.addReceiveStreamListener(this);
SessionAddress localaddr =new SessionAddress( InetAddress.getLocalHost(), port);
SessionAddress sessaddr = new SessionAddress( peerAddress, port);
mymgr.initialize(localaddr);
mymgr.addTarget( sessaddr);For transmitting data to the peer I do:
RTPManager mymgr = RTPManager.newInstance();
// add as listener to create players for each incoming stream
mymgr.addReceiveStreamListener(this);
SessionAddress localaddr =new SessionAddress( InetAddress.getLocalHost(), SessionAddress.ANY_PORT);
SessionAddress sessaddr = new SessionAddress( peerAddress, port);
mymgr.initialize(localaddr);
mymgr.addTarget( sessaddr);
// the processor is capturing audio from the mic
processor.start();
SendStream sendStream = mymgr.createSendStream(processor.getDataOutput(), i);
sendStream.start();I probably forgot something when doing copy paste from my code... but I think this might help you
Good luck
Marco

Send RTP stream to NAT address

Hi,
i want to transmit a RTP stream from a server to a host in a LAN.
This host has a NAT address and it's non real IP address, so i can't send any stream trought usage of SessionManager API because it need to know a public IP.
The other issue is that in a LAN, in most popular cases, there is a firewall that close the connection from internet to their hosts.
I think this solution:
1) LAN's hosts can intiate the connection with server sending a non real RTP data
2)Server store the SessionManager of this connection
3)server can send your RTP stream now
Someone have a more good solution or any suggestion?
Thank for all
[email protected]

I have one appletTransmitter that capture video from webcam and transmit it to other client on internet.
I try to transmit medialocator from appletTransmitter to servlet1 and then save MedialLocator as servlet attribute, then other client can connect to servlet2 that send saved MediaLocator to appletClient.
APPLETTRANSMITTER:
URL url=null;
MediaLocator media=new MediaLocator("vfw://0");
try{
url = new URL("http://localhost:8080/servlet1");
catch(MalformedURLException mue){mue.printStackTrace();}
URLConnection conn=null;
try{
conn = url.openConnection();
catch(IOException ioe){ioe.printStackTrace();}
conn.setDoOutput(true);
OutputStream os=null;
ObjectOutputStream oos=null;
InputStream in=null;
ObjectInputStream iin=null;
MediaLocator mResp=null;
String r=null;
try{
os=conn.getOutputStream();
oos=new ObjectOutputStream(os);
oos.writeObject(media);
//oos.writeObject("Prova Servlet");
oos.flush();
catch(IOException io){io.printStackTrace();}
catch(ClassNotFoundException cn){cn.printStackTrace();}
SERVLET1
ObjectInputStream objin = new ObjectInputStream(request.getInputStream());
MediaLocator ml =null;
try{
ml = (MediaLocator) objin.readObject();
context.setAttribute("media",ml);
catch(ClassNotFoundException e)
{e.printStackTrace()}
But on servlet1 there is a ClassNotFoundException: MediaLocator
What do we think about the solution and exception problem?
Best Regards,
Nico from Italy

Write(Export) the RTP Stream from a SIP Call to an audio file

I am working on telephony system that need record each call to a file.
I got the RTP Stream in ReceiveStreamEvent handler and start to record
the problem is i got a file and play it but there are any sounds
when i set FileTypeDescriptor.WAVE and AudioFormat.ULAW
I try out the FileTypeDescriptor.WAVE and AudioFormat.IMA4_MS, i got a fixed size file with 60kb
if the FileTypeDescriptor.MPEG_AUDIO and AudioFormat.MPEG, the processor cannot be realize,
the thread is blocked!!
Could anyone save me? thanks in advanced!
=================================Code===================================================
public void update(ReceiveStreamEvent evt){
logger.debug("received a new incoming stream. " + evt);
RTPManager mgr = (RTPManager) evt.getSource();
Participant participant = evt.getParticipant(); // could be null.
ReceiveStream stream = evt.getReceiveStream(); // could be null.
if (evt instanceof NewReceiveStreamEvent)
try
stream = ( (NewReceiveStreamEvent) evt).getReceiveStream();
DataSource ds = stream.getDataSource();
          recorder = new CallRecorderImpl(ds);
recorder.start();
catch (Exception e)
logger.error("NewReceiveStreamEvent exception ", e);
return;
========================================================================================
this is the CallRecorderImpl Class
public class CallRecorderImpl implements DataSinkListener, ControllerListener {
     private Processor processor = null;
     private DataSink dataSink = null;
     private DataSource source = null;
     private boolean bRecording = false;
     FileTypeDescriptor contentType = new FileTypeDescriptor(FileTypeDescriptor.WAVE);
     Format encoding = new AudioFormat(AudioFormat.IMA4_MS);
MediaLocator dest = new MediaLocator("file:/c:/bar.wav");
     public CallRecorderImpl(DataSource ds) {
          this.source = ds;
     public void start() {
          try {
               processor = Manager.createProcessor(source);
               processor.addControllerListener(this);
               processor.configure();
          } catch (Exception e) {
               System.out.println("exception:" + e);
     public void stop() {
          try {
               System.out.println("stopping");
               this.dataSink.stop();
               this.dataSink.close();
          } catch (Exception ep) {
               ep.printStackTrace();
     public void controllerUpdate(ControllerEvent evt) {
          Processor pr = (Processor) evt.getSourceController();
          if (evt instanceof ConfigureCompleteEvent) {
               System.out.println("ConfigureCompleteEvent");
               processConfigured(pr);
          if (evt instanceof RealizeCompleteEvent) {
               System.out.println("RealizeCompleteEvent");
               processRealized(pr);
          if (evt instanceof ControllerClosedEvent) {
               System.out.println("ControllerClosedEvent");
          if (evt instanceof EndOfMediaEvent) {
               System.out.println("EndOfMediaEvent");
               pr.stop();
          if (evt instanceof StopEvent) {
               System.out.println("StopEvent");
               pr.close();
               try {
                    dataSink.stop();
                    dataSink.close();
               } catch (Exception ee) {
                    ee.printStackTrace();
     public void dataSinkUpdate(DataSinkEvent event) {
          if (event instanceof EndOfStreamEvent) {
               try {
                    System.out.println("EndOfStreamEvent");
                    dataSink.stop();
                    dataSink.close();
                    System.exit(1);
               } catch (Exception e) {
     public void processConfigured(Processor p) {
          // Set the output content type
          p.setContentDescriptor(this.contentType);
          // Get the track control objects
          TrackControl track[] = p.getTrackControls();
          boolean encodingPossible = false;
          // Go through the tracks and try to program one of them
          // to output ima4 data.
          for (int i = 0; i < track.length; i++) {
          try {
               track.setFormat(this.encoding);
               encodingPossible = true;
          } catch (Exception e) {
               track[i].setEnabled(false);
          if (!encodingPossible) {
               System.out.println("cannot encode to " + this.encoding);
          return;
          p.realize();
     public void processRealized(Processor p) {
          System.out.println("Entered processRealized");
DataSource source = p.getDataOutput();
try {
     dataSink = Manager.createDataSink(source, dest);
     dataSink.open();
     dataSink.start();
     dataSink.addDataSinkListener(new DataSinkListener() {
                    public void dataSinkUpdate(DataSinkEvent e) {
                         if (e instanceof EndOfStreamEvent) {
                              System.out.println("EndOfStreamEvent");
                              dataSink.close();
} catch (Exception e) {
     e.printStackTrace();
     return;
          p.start();
============================================

Which shows that the output stream cannot be of that particulat format and descriptor.
Look at this code
import javax.swing.*;
import javax.media.*;
import java.net.*;
import java.io.*;
import javax.media.datasink.*;
import javax.media.protocol.*;
import javax.media.format.*;
import javax.media.control.*;
class Abc implements ControllerListener
     DataSource ds;
     DataSink sink;
     Processor pr;
     MediaLocator mc;
     public void maam() throws Exception
          mc=new MediaLocator("file:C:/Workspace/aaaaa.mpg");
          pr=Manager.createProcessor(new URL("file:G:/java files1/jmf/aa.mp3"));
          pr.addControllerListener(this);
          pr.configure();
     public void controllerUpdate(ControllerEvent e)
          if(e instanceof ConfigureCompleteEvent)
               System.out.println ("ConfigureCompleteEvent");
                         Processor p = (Processor)e.getSourceController();
               System.out.println ("ConfigureCompleteEvent");
                     processConfigured(p);
          if(e instanceof RealizeCompleteEvent)
               System.out.println ("RealizeCompleteEvent");
                       Processor p = (Processor)e.getSourceController();
                         processRealized(p);
          if(e instanceof ControllerClosedEvent)
                     System.out.println ("ControllerClosedEvent");
                 if(e instanceof EndOfMediaEvent)
                    System.out.println ("EndOfMediaEvent");
                    Processor p = (Processor)e.getSourceController();
                    p.stop();
             if(e instanceof StopEvent)
                     System.out.println ("StopEvent");
                     Processor p = (Processor)e.getSourceController();
                     p.close();
               try
                    sink.stop();
                    sink.close();
               catch(Exception ee)
     public void processConfigured(Processor p)
          System.out.println("Entered processConfigured");
          p.setContentDescriptor (new FileTypeDescriptor (FileTypeDescriptor.MPEG_AUDIO));
            /*    TrackControl track[] = p.getTrackControls ();
             boolean encodingPossible = false;
             for (int i = 0; i < track.length; i++)
                  try
                       track.setFormat (new VideoFormat (VideoFormat.MPEG));
               encodingPossible = true;
               catch (Exception e)
               track[i].setEnabled (false);
     p.realize();
     public void processRealized(Processor p)
          pr=p;
          System.out.println("Entered processRealized");
          try
               MediaLocator dest = new MediaLocator("file:C:/Workspace/ring1.mpg");
               sink = Manager.createDataSink(p.getDataOutput(), dest);
          sink.addDataSinkListener(new DataSinkListener()
                    public void dataSinkUpdate(DataSinkEvent e)
                         if(e instanceof EndOfStreamEvent)
                    System.out.println ("EndOfStreamEvent");
                              sink.close();
               sink.open();
               sink.start();
          catch(Exception eX)
          System.out.println("Just before start");
          p.start();
/*     public void dataSinkUpdate(DataSinkEvent event)
          if(event instanceof EndOfStreamEvent)
               try
                    System.out.println("EndOfStreamEvent");
                    dsk.stop();
                    dsk.close();
                    System.exit(1);
               catch(Exception e)
public class JMFCapture6
     public static void main(String args[]) throws Exception
          Abc a=new Abc();
          a.maam();

Using RTP stream as data source

I have successfully written a program that reads G.711 audio from a wav file and sends it out over the network.
I'm trying to modify that program so that instead of getting its source audio from a file, it instead receives the audio from an RTP stream. So, in effect, it is simply receiving audio from one socket and sending it back out another.
The error I'm encountering:
[java] javax.media.NoProcessorException: Cannot find a Processor for: rtp://172.30.18.140:32916
[java] at javax.media.Manager.createProcessorForContent(Manager.java:1663)
[java] at javax.media.Manager.createProcessor(Manager.java:627)
Here is the code fragment where the exception occurs:
processor = javax.media.Manager.createProcessor(new MediaLocator("rtp://172.30.18.140:32916"));
Can anybody help? Thanks!
<removed funky formatting><br>
Message was edited by:
feh

Hi,
I Had a very similar problem, but in addiction I had to store data in a buffer before retransmission. I resolved it employing low level classes. At this time, I still do not know any other solution, and nobody helped me in any way, also in this forum...
So, first you have to access single frames of the stream (Buffer or ExtBuffer objects) using a RawBufferParser, then you have to reconstruct a DataSource by multiplexing the frames (use an appropriate Multiplexer class, such as RTPSynchBufferMux).
The big problem is that there is no documentation avalaible about how to use these classes: I have lerned all I know by "reverse engineering" (lots of hours spent in reading very long annoying code). A little help can be given by the PlugIn Viewer of JMStudio, that tells you which classes are to be employed.
I have not tried to retransmit data "straightforward", without access single frames, because that was not my task. Maybe if you use RTPManager, it is possible to get a DataSource by the ReceiveStream object, and then to pass it to another RTPManager to create a SendStream.
I do not know any simpler way to do that, but this does not mean that it does not exist...!
good luck.
Alberto M. (Italy)

RTP streaming

Hi guys,
what I need to do is to stream YUV images between two JMF applications. I am using VideoTransmit application (taken from this site) to transmit and JMStudio to receive. From a little research I have noticed the following to transmit:
1) Create the DataSource using the Manager.CreateDataSource(MediaLocator)
2) create processor using the above created datasource
3) create player etc.
My question now is the following:
How can I transmit a YUV file? How can I create the DataSource which has this YUV file without having problems for the further creation of processor etc?
Thanks in advance guys,
Chris

Ok, I think I know what was confusing me. Apparently the setRate() isn't effecting the rate of stream. The audio file I am streaming runs about five minutes usually, so I sped the rate up to 10. It sped the process of writing to a file up significantly, but writing to an RTP stream seems to take the full run-time of the file. Does this sound right or is there something else I'm missing?
Thanks,
Khanathor

RTP-Streaming (MP3)

Dear Java-Users,
we like to build a little RTP-Streaming radio.
We found a lot of code samples for example the AVTransmit/Recieve from java.sun.
Our client is working well and is able to recieve RTP-Streams.
But our server isn't running at the moment.
When we start both (server and client) on one local machine, the client can recieve the Stream. When we start the server on an other machine from the same network, the client cannot recieve the stream.
Well there are two problems left :
1) As I said the server does not work except from localhost.
2) We read that there is no MP3 support on Java-RTP-Streaming. But as you know MP3 is the most used audio-format and that's why we like to implement it.
If somebody could help me, I would be really glad.
Please send me an email or post here. ([email protected])
I appreciate for your time. with good greetings,
Tobias Belch

Really I have to pay to use MP3 ?
No I didn't knew this.
I want to use MP3, for I want to build a simple and small client/server for RTP-Streaming over a standard network. And MP3 is the most used format and that's why it is just comfortable for the user to use mp3.
But thank you very much for your hint.
greetings

Display a RTP Stream in JavaFX

Hi all,
does anyone know a way to display a RTP Stream? I´ve read about, that you can display a RTSP Stream as media.source.
Is there something similar for a RTP Stream?
Thanks in Advance
Jazzor

I have the same problem. I got the following working
1. using http as in the media sample going to the internet
2. local disk via file://
3.local host via http:
BTW: make sure you have all your codecs updated on XP (SP3) by using something like CCCP codec support. this caused me major headaches. as the media player kept on crashing if you pressed the start button more than once.
I now need to show a stream via either RTP or UDP . my idea is too use the VLC player and stream the video and then use the media player to display the stream within my application
I am using netbeans with javaFX1.2 XP with SP3.

Problems Presenting RTP Stream

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