Implementing a mediaplayer into my application

Question

h3. Hello,
I am working on a project for school. This involves editing a freeware java program for a Lego NXT robot to function under keyboard input aswell as button input, and implementing a media player into the application so that live video material from the robot can be viewed through the app. The video will be created from an RTP protocol for stream, but I haven't got the slightest idea about how to implement the media player into the application. The app itself is a GUI which holds the buttons to control the NXT robot. The media player is of the type specified in the JMF 2.1.1 as I found JMF most suitable for the situation.
h4. My first try was this:
if(mediaPlayer != null)
mediaPlayer.close();
String location = ("rtp:10.110.110.224:1234");
try{
     MediaLocator ml = new MediaLocator(location);
     if(ml == null)
         System.err.println("Can't build MediaLocator for RTP");
     mediaPlayer = (MediaPlayer) Manager.createPlayer(ml);
catch (NoPlayerException e){
     System.err.println("Error:" + e);
catch (MalformedURLException e){
     System.err.println("Error:" + e);
catch (IOException e){
     System.err.println("Error:" + e);
mediaPlayer.setControlPanelVisible(true);
mediaPlayer.setFixedAspectRatio(true);
mediaPlayer.setPlaybackLoop(false);
mediaPlayer.prefetch ();
addComponent(contentPane, mediaPlayer, 10,28,400,200);
mediaPlayer.start ();addComponent is a method which places the component in a pre-defined container and adds it to the GUI. But somehow, it doesn't recognize the RTP adress specified as the location.
I already tried something with the AVReceive3 class which sun so generously distributed (http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/AVReceive3.java), but this didn't seem to work aswell.
{noformat}I hope that you can help me find a solution fast,{noformat}
{noformat}best wishes,{noformat}
{noformat}Roy
{noformat}

Answer 1

Get rid of the file:// part of the RTP address. rtp:// is like http:// or file://...it's the prefix telling the URL what protocol to use.
String location = "rtp://10.110.110.224:1234"; I've tried your sollution, but it doesn't seem to work.
I've tried another approach:
* Setting the properties for the mediaplayer object
if(mediaPlayer != null)
            mediaPlayer.close();
//Source for streaming video
String location = "rtsp://localhost:1234";
//String location = "file://C:/Documents and Settings/Administrator/Desktop/Capture.AVI";
try{
            ml = new MediaLocator(location);
            if(ml == null)
                System.err.println("Unable to build MediaLocator");
            DataSource ds = new DataSource(ml);
}I switched to using the localhost, as the stream is intended to be streamed from a server to the client program, and I've tried using a datasource.
HOWEVER, using this approach insists on implementing the 4 standard abstract methods which come with the DataSource constructor:
DataSource ds = new DataSource(ml) {
            public InputStream getInputStream() throws IOException {
                    throw new UnsupportedOperationException("Not supported yet.");
            public OutputStream getOutputStream() throws IOException {
                    throw new UnsupportedOperationException("Not supported yet.");
            public String getContentType() {
                    throw new UnsupportedOperationException("Not supported yet.");
            public String getName() {
                    throw new UnsupportedOperationException("Not supported yet.");
};And after that, it insists on getting rid of the medialocator argument, as I implemented an annonymous class.
I'm sure it's rather obvious that I'm a novice to this stuff... but I really want to fix this, as I could use the experience.