Remote Webcam Access Through JMF

[Devesh_2]

First Of all, I am trying to implement a video conferencing system using JMF. I want to access webcam of a remote computer to take images.I have successfully captured images from my local camera.But when i try to do this from "A" computer to access webcam of "B" computer , i am not being successful. Can you please help me ??

[stultuske]

JMF is ancient. they stopped supporting it years ago. you may want to look for a somewhat more 'up to date' technology.

So, you tried something, but it's not successful. Can you show us what you tried and tell us what exactly went wrong?

[Devesh_2]

Basically, I am looking for a way so that everyone dont have to install JMF on their machine.The JMF would be installed only on the server machine.And When a client login to server through his system.Then the following code should run and it should gather the devices on his system and do the rest part of code.

I have searched a lot but being unable to find such a way.Help me on that.
Also if any other way of achieving video conferencing is there. Tell me about that too. But condition is that i want to acheive it that i want to acheive conferencing from a client browser to another client browser in JSP.

The following is a way to transmit an audio in a network.
I want to know how can i
1. transmit video in the same way
2. deploy the same code in JSP so that a client A (192.168.1.11) can communicate to client B(192.168.1.22) through server (192.168.1.5).

If i have to capture image from webcam and store it in the database when a client login (Using JSP) how can i do that.

``
I have made the changes that should be made in the code on the first line of main() to represent the MediaLocator.

--------------------------------------------------
Transmitter.java
---------------------------------------------------

import javax.media.*;
import javax.media.control.*;
import javax.media.protocol.*;
import javax.media.format.*;

import java.io.IOException;
import java.io.File;
import java.util.Vector;

public class Transmitter {

private MediaLocator mediaLocator = null;
private DataSink dataSink = null;

private Processor mediaProcessor = null;
private static final Format[] FORMATS = new Format[] {
new AudioFormat(AudioFormat.ULAW_RTP)};

private static final ContentDescriptor CONTENT_DESCRIPTOR =
new ContentDescriptor(ContentDescriptor.RAW_RTP);

public Transmitter(MediaLocator locator) {
mediaLocator = locator;
}

public void startTransmitting() throws IOException {

mediaProcessor.start(); 
dataSink.open();
dataSink.start();
}

public void stopTransmitting() throws IOException {

dataSink.stop();
dataSink.close(); 
mediaProcessor.stop();
mediaProcessor.close();
}


public void setDataSource(DataSource ds) throws IOException,
NoProcessorException, CannotRealizeException, NoDataSinkException {


mediaProcessor = Manager.createRealizedProcessor(
new ProcessorModel(ds, FORMATS, CONTENT_DESCRIPTOR));


dataSink = Manager.createDataSink(mediaProcessor.getDataOutput(),
mediaLocator);
}

public static void main(String[] args) {
try {

MediaLocator locator = new MediaLocator("rtp://192.168.56.1:339/audio");   
Transmitter transmitter = new Transmitter(locator);
System.out.println("-> Created media locator: '" +
locator + "'");

Vector devices=CaptureDeviceManager.getDeviceList ( null ); 
CaptureDeviceInfo cdi= (CaptureDeviceInfo) devices.elementAt ( 0 ); 

DataSource source = Manager.createDataSource(
cdi.getLocator());

transmitter.setDataSource(source);
System.out.println("-> Set the data source on the transmitter");

transmitter.startTransmitting();
System.out.println("-> Transmitting...");
System.out.println(" Press the Enter key to exit");

System.in.read();
System.out.println("-> Exiting");
transmitter.stopTransmitting();

} catch (Throwable t) {
t.printStackTrace();
}

System.exit(0);
}

----------------------------------------------------


Receiver.java
----------------------------------------------------

import javax.media.*;

import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.net.MalformedURLException;

public class Receiver {
private Player audioPlayer = null;

public Receiver(MediaLocator url) throws IOException, NoPlayerException,
CannotRealizeException {
audioPlayer = Manager.createRealizedPlayer(url);
}

public void play() {
audioPlayer.start();
}


public void stop() {
audioPlayer.stop();
audioPlayer.close();
}
public static void main(String[] args) {
try {
MediaLocator loc=new MediaLocator("rtp://192.168.56.1:331/audio");      //getRemoteAddr(); can be used here
Receiver player = new Receiver(loc);
System.out.println(" Press the Enter key to exit");
player.play(); 
System.in.read();
System.out.println("-> Exiting");
player.stop(); 

} catch (Exception ex) {
ex.printStackTrace();
}

System.exit(0);
}
}
}

[stultuske]

again: don't use jmf.
suppose you were an expert in OS's, would you rather work for a company that works on Windows '95 or installed Windows 8 ?

[iamthwee]

suppose you were an expert in OS's, would you rather work for a company that works on Windows '95 or installed Windows 8 ?

Neither, windows 3.1

With flash at least video support works 100% of the time all the time. I don't like the idea of java.

I also stumbled accross this with a flash fallback

https://github.com/jhuckaby/webcamjs

[Devesh_2]

I understand what you say but i want to implement it in jsp.Is this Possible or not? Also, Tell me which new technology is considered best today for me (As a java Programmer).

[iamthwee]

Please see the link above for best technology.

Java + webcam = no