Audio and Video Performance Tweaking

Hey guys I'm back with more questions.  I'm trying to improve the overall quality of my video conference experience.   My target market is the elderly and their families, so not necessarly people who are used to computers and tweaking things so we want to make it as good as we can right out of the box.
Video
1.)  All of my decoded video has clearly visible blocks.  I've attached a sample screen shot to show what I mean.  Is there a deblocking filter option I'm missing somewhere?
2.)  The encoder in flash player 10.x is still H.263 based right?  I'm not missing a secret option to use the H.264 encoder am I?
Audio
1.)  I've set my audio codec to speex in my audio publisher, and it looks like it defaults to a quality setting of 10 (<rtc:AudioPublisher id="audioPub" codec="{SoundCodec.SPEEX}"/>).  Am I missing any tweaks to improve the audio quality?
Audio questions where I assume the answer is no but I ask anyway
2.)  Does the LCCS code or flash player prioritize audio packets over video packets or are they just sent when they're available.  I'd like to sacrafice video for audio if it's possible.
3.)  Is there a way to better syncronize the video and audio streams.  Right now there's a lot of lag between what is said and how the lips move (this is even with peer to peer on the same private network).   I get the idea that there isn't but I thought I'd ask.
4.)  Is there anything I can monitor to give me an idea of the current connection performance?   In otherwords can I monitor something and then make my own decicions to reduce the video quality or audio quality based on avaiable bandwidth between the two connected peers?
5.)  You secretely have echo cancellation built in but were waiting till now to tell me right?  Just kidding.
Thanks as usual
-Eric

Hironmay,
       Thank you for getting back to me, I know I asked a lot in one post there.   It would be nice to have a way for audio packets to be prioritized over video since they need to get there but  you can live with dropped video frames.   I'd love to see a way to sync the audio and video up as well.  I was just reading about some research where they showed if you can watch someones mouth move while you hear them talk it's equivelant to a 20dB volume increase (referrning to how well the person can understand you.)   I have elderly users so something like that is very important to me.
I agree with you that when I changed the captureAndHeightFactor that the blocks got smaller, but did not go away.  I was hoping there was a way to smooth out the edges of the blocks so the boundries don't look so harsh.   I had been looking at flash.media.video in the flex 3.4 language reference and it talks about deblocking.  I copied the relevent text from the documentaiton at the end of this message.  I was wondering if there was something there I could use.   I'll play around with it some more.
Believe me I've been very vocal about the need for echo cancellation on the Flash Forums
Thanks for the help,
Eric
relevent text from flash.media.video
deblocking
property
deblocking:intIndicates the type of filter applied to decoded video as part of post-processing.      The default value is 0, which lets the video compressor apply a deblocking filter as needed.
Compression of video can result in undesired artifacts. You can use the       deblocking property to set filters that reduce blocking and,      for video compressed using the On2 codec, ringing.
Blocking refers to visible imperfections between the boundaries      of the blocks that compose each video frame. Ringing refers to distorted      edges around elements within a video image.
Two deblocking filters are available: one in the Sorenson codec and one in the On2 VP6 codec.      In addition, a deringing filter is available when you use the On2 VP6 codec.       To set a filter, use one of the following values:
0—Lets the video compressor apply the deblocking filter as needed.
1—Does not use a deblocking filter.
2—Uses the Sorenson deblocking filter.
3—For On2 video only, uses the On2 deblocking filter but no deringing filter.
4—For On2 video only, uses the On2 deblocking and deringing filter.
5—For On2 video only, uses the On2 deblocking and a higher-performance      On2 deringing filter.
If a value greater than 2 is selected for video when you are using      the Sorenson codec, the Sorenson decoder defaults to 2.
Using a deblocking filter has an effect on overall playback performance, and it is usually      not necessary for high-bandwidth video. If a user's system is not powerful enough,       the user may experience difficulties playing back video with a deblocking filter enabled.

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    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
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    I don't think that I had the same problem that you do, but I thought I'd throw in my two cents just in case it might help. Encore would not build the output; it said something like the inpoint and the length did not match the endpoint. Actually, I think this happened in several different situations. In one case I simply adjusted the audio and video tracks to match endpoints. In the other case I went back to Premier and found that in some cases where I had added transitions it had shifted the endpoints of the audio and video tracks so they did not match. I removed the transitions. It didn't matter that much to me since I'm doing this for personal use. Is it possible those crosshatched lines you're seeing are transitions?
    I am using CS 3 and editing HD. I have had many problems with encore. I read in the form someplace that it had a hard time handling H.264 so I changed to MPEG-2 and that fixed one problem. In another case it couldn't find some files and I found some advice not to use HD or wide menus, so I switched to standard 4:3 menus and it worked.

  • Extra hardware interface for transmiting both Audio and video to client ??

    hi i m doing e-learning project. i have to capture video from webcam and voice from headphone and send to client.
    but my code is working fine for either one at a time.
    DO i need some extra hardware interface for Transmitting  both Audio and video to client im using code AVTransmit and AVReceive found from this site only
    After running TX
    i give dsound:// & vfw://0 in Media Locater only sound is received and no vedio
    and when i give vfw://0 in Media Locater only live video is transmited.
    im using JMF1.1.2e.
    if any one know the method to run or cause of it plz reply me soon. i will be very thankfull
    transmiter/server side code .first run TX on server
    import java.io.*;
    import java.awt.*;
    import java.awt.event.*;
    import java.net.*;
    import java.util.*;
    import javax.media.rtp.*;
    import javax.swing.*;
    import javax.swing.event.*;
    import javax.swing.border.*;
    public class Tx extends JFrame implements ActionListener, KeyListener,
    MouseListener, WindowListener {
    Vector targets;
    JList list;
    JButton startXmit;
    JButton rtcp;
    JButton update;
    JButton expiration;
    JButton statistics;
    JButton addTarget;
    JButton removeTarget;
    JTextField tf_remote_address;
    JTextField tf_remote_data_port;
    JTextField tf_media_file;
    JTextField tf_data_port;
    TargetListModel listModel;
    AVTransmitter avTransmitter;
    RTCPViewer rtcpViewer;
    JCheckBox cb_loop;
    Config config;
    public Tx() {
    setTitle( "JMF/RTP Transmitter");
    config= new Config();
    GridBagLayout gridBagLayout= new GridBagLayout();
    GridBagConstraints gbc;
    JPanel p= new JPanel();
    p.setLayout( gridBagLayout);
    JPanel localPanel= createLocalPanel();
    gbc= new GridBagConstraints();
    gbc.gridx= 0;
    gbc.gridy= 0;
    gbc.gridwidth= 2;
    gbc.anchor= GridBagConstraints.CENTER;
    gbc.fill= GridBagConstraints.BOTH;
    gbc.insets= new Insets( 10, 5, 0, 0);
    ((GridBagLayout)p.getLayout()).setConstraints( localPanel, gbc);
    p.add( localPanel);
    JPanel targetPanel= createTargetPanel();
    gbc= new GridBagConstraints();
    gbc.gridx= 1;
    gbc.gridy= 1;
    gbc.weightx= 1.0;
    gbc.weighty= 1.0;
    gbc.anchor= GridBagConstraints.CENTER;
    gbc.fill= GridBagConstraints.BOTH;
    gbc.insets= new Insets( 10, 5, 0, 0);
    ((GridBagLayout)p.getLayout()).setConstraints( targetPanel, gbc);
    p.add( targetPanel);
    JPanel mediaPanel= createMediaPanel();
    gbc= new GridBagConstraints();
    gbc.gridx= 1;
    gbc.gridy= 2;
    gbc.weightx= 1.0;
    gbc.weighty= 1.0;
    gbc.anchor= GridBagConstraints.CENTER;
    gbc.fill= GridBagConstraints.BOTH;
    gbc.insets= new Insets( 10, 5, 0, 0);
    ((GridBagLayout)p.getLayout()).setConstraints( mediaPanel, gbc);
    p.add( mediaPanel);
    JPanel buttonPanel= new JPanel();
    rtcp= new JButton( "RTCP Monitor");
    update= new JButton( "Transmission Status");
    update.setEnabled( false);
    rtcp.addActionListener( this);
    update.addActionListener( this);
    buttonPanel.add( rtcp);
    buttonPanel.add( update);
    gbc= new GridBagConstraints();
    gbc.gridx = 0;
    gbc.gridy = 3;
    gbc.gridwidth= 2;
    gbc.weightx = 1.0;
    gbc.weighty = 0.0;
    gbc.anchor = GridBagConstraints.CENTER;
    gbc.fill = GridBagConstraints.HORIZONTAL;
    gbc.insets = new Insets( 5,5,10,5);
    ((GridBagLayout)p.getLayout()).setConstraints( buttonPanel, gbc);
    p.add( buttonPanel);
    getContentPane().add( p);
    list.addMouseListener( this);
    addWindowListener( this);
    pack();
    setVisible( true);
    private JPanel createMediaPanel() {
    JPanel p= new JPanel();
    GridBagLayout gridBagLayout= new GridBagLayout();
    GridBagConstraints gbc;
    p.setLayout( gridBagLayout);
    JLabel label= new JLabel( "Media Locator:");
    gbc= new GridBagConstraints();
    gbc.gridx = 0;
    gbc.gridy = 0;
    gbc.weightx = 0.0;
    gbc.weighty = 0.0;
    gbc.anchor = GridBagConstraints.EAST;
    gbc.fill = GridBagConstraints.NONE;
    gbc.insets = new Insets( 5,5,10,5);
    ((GridBagLayout)p.getLayout()).setConstraints( label, gbc);
    p.add( label);
    tf_media_file= new JTextField( 35);
    gbc= new GridBagConstraints();
    gbc.gridx = 1;
    gbc.gridy = 0;
    gbc.weightx = 1.0;
    gbc.weighty = 0.0;
    gbc.anchor = GridBagConstraints.WEST;
    gbc.fill = GridBagConstraints.HORIZONTAL;
    gbc.insets = new Insets( 5,5,10,5);
    ((GridBagLayout)p.getLayout()).setConstraints( tf_media_file, gbc);
    p.add( tf_media_file);
    tf_media_file.setText( config.media_locator);
    cb_loop= new JCheckBox( "loop");
    startXmit= new JButton( "Start Transmission");
    startXmit.setEnabled( true);
    startXmit.addActionListener( this);
    gbc= new GridBagConstraints();
    gbc.gridx = 2;
    gbc.gridy = 0;
    gbc.weightx = 0.0;
    gbc.weighty = 0.0;
    gbc.anchor = GridBagConstraints.WEST;
    gbc.fill = GridBagConstraints.NONE;
    gbc.insets = new Insets( 5,5,10,5);
    ((GridBagLayout)p.getLayout()).setConstraints( cb_loop, gbc);
    p.add( cb_loop);
    cb_loop.setSelected( true);
    cb_loop.addActionListener( this);
    gbc= new GridBagConstraints();
    gbc.gridx = 1;
    gbc.gridy = 1;
    gbc.weightx = 0.0;
    gbc.weighty = 0.0;
    gbc.anchor = GridBagConstraints.CENTER;
    gbc.fill = GridBagConstraints.NONE;
    gbc.insets = new Insets( 5,5,10,5);
    ((GridBagLayout)p.getLayout()).setConstraints( startXmit, gbc);
    p.add( startXmit);
    TitledBorder titledBorder= new TitledBorder( new EtchedBorder(), "Source");
    p.setBorder( titledBorder);
    return p;
    private JPanel createTargetPanel() {
    JPanel p= new JPanel();
    GridBagLayout gridBagLayout= new GridBagLayout();
    GridBagConstraints gbc;
    p.setLayout( gridBagLayout);
    targets= new Vector();
    for( int i= 0; i < config.targets.size(); i++) {
    targets.addElement( config.targets.elementAt( i));
    listModel= new TargetListModel( targets);
    list= new JList( listModel);
    list.addKeyListener( this);
    list.setPrototypeCellValue( "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");
    JScrollPane scrollPane= new JScrollPane( list,
    ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,
    ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
    gbc= new GridBagConstraints();
    gbc.gridx= 0;
    gbc.gridy= 0;
    gbc.weightx= 1.0;
    gbc.weighty= 1.0;
    gbc.anchor= GridBagConstraints.CENTER;
    gbc.fill= GridBagConstraints.BOTH;
    gbc.insets= new Insets( 10, 5, 0, 0);
    ((GridBagLayout)p.getLayout()).setConstraints( scrollPane, gbc);
    p.add( scrollPane);
    JPanel p1= new JPanel();
    p1.setLayout( gridBagLayout);
    JLabel label= new JLabel( "IP Address:");
    gbc= new GridBagConstraints();
    gbc.gridx = 0;
    gbc.gridy = 0;
    gbc.weightx = 0.0;
    gbc.weighty = 0.0;
    gbc.anchor = GridBagConstraints.EAST;
    gbc.fill = GridBagConstraints.NONE;
    gbc.insets = new Insets( 5,5,0,5);
    ((GridBagLayout)p1.getLayout()).setConstraints( label, gbc);
    p1.add( label);
    tf_remote_address= new JTextField( 15);
    gbc= new GridBagConstraints();
    gbc.gridx = 1;
    gbc.gridy = 0;
    gbc.weightx = 0.0;
    gbc.weighty = 0.0;
    gbc.anchor = GridBagConstraints.WEST;
    gbc.fill = GridBagConstraints.NONE;
    gbc.insets = new Insets( 5,5,0,5);
    ((GridBagLayout)p1.getLayout()).setConstraints( tf_remote_address, gbc);
    p1.add( tf_remote_address);
    label= new JLabel( "Data Port:");
    gbc= new GridBagConstraints();
    gbc.gridx = 0;
    gbc.gridy = 1;
    gbc.weightx = 0.0;
    gbc.weighty = 0.0;
    gbc.anchor = GridBagConstraints.EAST;
    gbc.fill = GridBagConstraints.NONE;
    gbc.insets = new Insets( 5,5,0,5);
    ((GridBagLayout)p1.getLayout()).setConstraints( label, gbc);
    p1.add( label);
    tf_remote_data_port= new JTextField( 15);
    gbc= new GridBagConstraints();
    gbc.gridx = 1;
    gbc.gridy = 1;
    gbc.weightx = 0.0;
    gbc.weighty = 0.0;
    gbc.anchor = GridBagConstraints.WEST;
    gbc.fill = GridBagConstraints.NONE;
    gbc.insets = new Insets( 5,5,0,5);
    ((GridBagLayout)p1.getLayout()).setConstraints( tf_remote_data_port, gbc);
    p1.add( tf_remote_data_port);
    JPanel p2= new JPanel();
    addTarget= new JButton( "Add Target");
    removeTarget= new JButton( "Remove Target");
    p2.add( addTarget);
    p2.add( removeTarget);
    addTarget.addActionListener( this);
    removeTarget.addActionListener( this);
    gbc= new GridBagConstraints();
    gbc.gridx = 0;
    gbc.gridy = 2;
    gbc.weightx = 1.0;
    gbc.weighty = 0.0;
    gbc.gridwidth= 2;
    gbc.anchor = GridBagConstraints.CENTER;
    gbc.fill = GridBagConstraints.HORIZONTAL;
    gbc.insets = new Insets( 20,5,0,5);
    ((GridBagLayout)p1.getLayout()).setConstraints( p2, gbc);
    p1.add( p2);
    gbc= new GridBagConstraints();
    gbc.gridx= 1;
    gbc.gridy= 0;
    gbc.weightx= 1.0;
    gbc.weighty= 1.0;
    gbc.anchor= GridBagConstraints.CENTER;
    gbc.fill= GridBagConstraints.BOTH;
    gbc.insets= new Insets( 10, 5, 0, 0);
    ((GridBagLayout)p.getLayout()).setConstraints( p1, gbc);
    p.add( p1);
    TitledBorder titledBorder= new TitledBorder( new EtchedBorder(), "Targets");
    p.setBorder( titledBorder);
    return p;
    private JPanel createLocalPanel() {
    JPanel p= new JPanel();
    GridBagLayout gridBagLayout= new GridBagLayout();
    GridBagConstraints gbc;
    p.setLayout( gridBagLayout);
    JLabel label= new JLabel( "IP Address:");
    gbc= new GridBagConstraints();
    gbc.gridx = 0;
    gbc.gridy = 0;
    gbc.weightx = 0.0;
    gbc.weighty = 0.0;
    gbc.anchor = GridBagConstraints.EAST;
    gbc.fill = GridBagConstraints.NONE;
    gbc.insets = new Insets( 5,5,0,5);
    ((GridBagLayout)p.getLayout()).setConstraints( label, gbc);
    p.add( label);
    JTextField tf_local_host= new JTextField( 15);
    gbc= new GridBagConstraints();
    gbc.gridx = 1;
    gbc.gridy = 0;
    gbc.weightx = 0.0;
    gbc.weighty = 0.0;
    gbc.anchor = GridBagConstraints.WEST;
    gbc.fill = GridBagConstraints.NONE;
    gbc.insets = new Insets( 5,5,0,5);
    ((GridBagLayout)p.getLayout()).setConstraints( tf_local_host, gbc);
    p.add( tf_local_host);
    try {
    String host= InetAddress.getLocalHost().getHostAddress();
    tf_local_host.setText( host);
    } catch( UnknownHostException e) {
    label= new JLabel( "Data Port:");
    gbc= new GridBagConstraints();
    gbc.gridx = 0;
    gbc.gridy = 1;
    gbc.weightx = 0.0;
    gbc.weighty = 0.0;
    gbc.anchor = GridBagConstraints.EAST;
    gbc.fill = GridBagConstraints.NONE;
    gbc.insets = new Insets( 5,5,0,5);
    ((GridBagLayout)p.getLayout()).setConstraints( label, gbc);
    p.add( label);
    tf_data_port= new JTextField( 15);
    gbc= new GridBagConstraints();
    gbc.gridx = 1;
    gbc.gridy = 1;
    gbc.weightx = 0.0;
    gbc.weighty = 0.0;
    gbc.anchor = GridBagConstraints.WEST;
    gbc.fill = GridBagConstraints.NONE;
    gbc.insets = new Insets( 5,5,10,5);
    ((GridBagLayout)p.getLayout()).setConstraints( tf_data_port, gbc);
    p.add( tf_data_port);
    tf_data_port.setText( config.local_data_port);
    TitledBorder titledBorder= new TitledBorder( new EtchedBorder(), "Local Host");
    p.setBorder( titledBorder);
    return p;
    public void actionPerformed( ActionEvent event) {
    Object source= event.getSource();
    if( source == addTarget) {
    String ip= tf_remote_address.getText().trim();
    String port= tf_remote_data_port.getText().trim();
    String localPort= tf_data_port.getText().trim();
    addTargetToList( localPort, ip, port);
    if( avTransmitter != null) {
    avTransmitter.addTarget( ip, port);
    } else if( source == removeTarget) {
    int index= list.getSelectedIndex();
    if( index != -1) {
    Target target= (Target) targets.elementAt( index);
    if( avTransmitter != null) {
    avTransmitter.removeTarget( target.ip, target.port);
    targets.removeElement( target);
    listModel.setData( targets);
    } else if( source == startXmit) {
    if( startXmit.getLabel().equals( "Start Transmission")) {
    int data_port= new Integer( tf_data_port.getText()).intValue();
    avTransmitter= new AVTransmitter( this, data_port);
    avTransmitter.start( tf_media_file.getText().trim(), targets);
    avTransmitter.setLooping( cb_loop.isSelected());
    startXmit.setLabel( "Stop Transmission");
    } else if( startXmit.getLabel().equals( "Stop Transmission")) {
    avTransmitter.stop();
    avTransmitter= null;
    removeNonBaseTargets();
    listModel.setData( targets);
    startXmit.setLabel( "Start Transmission");
    } else if( source == rtcp) {
    if( rtcpViewer == null) {
    rtcpViewer= new RTCPViewer();
    } else {
    rtcpViewer.setVisible( true);
    rtcpViewer.toFront();
    } else if( source == cb_loop) {
    if( avTransmitter != null) {
    avTransmitter.setLooping( cb_loop.isSelected());
    private void removeNonBaseTargets() {
    String localPort= tf_data_port.getText().trim();
    for( int i= targets.size(); i > 0;) {
    Target target= (Target) targets.elementAt( i - 1);
    if( !target.localPort.equals( localPort)) {
    targets.removeElement( target);
    i--;
    public void addTargetToList( String localPort,
    String ip, String port) {
    ListUpdater listUpdater= new ListUpdater( localPort, ip,
    port, listModel, targets);
    SwingUtilities.invokeLater( listUpdater);
    public void rtcpReport( String report) {
    if( rtcpViewer != null) {
    rtcpViewer.report( report);
    public void windowClosing( WindowEvent event) {
    config.local_data_port= tf_data_port.getText().trim();
    config.targets= new Vector();
    for( int i= 0; i < targets.size(); i++) {
    Target target= (Target) targets.elementAt( i);
    if( target.localPort.equals( config.local_data_port)) {
    config.addTarget( target.ip, target.port);
    config.media_locator= tf_media_file.getText().trim();
    config.write();
    System.exit( 0);
    public void windowClosed( WindowEvent event) {
    public void windowDeiconified( WindowEvent event) {
    public void windowIconified( WindowEvent event) {
    public void windowActivated( WindowEvent event) {
    public void windowDeactivated( WindowEvent event) {
    public void windowOpened( WindowEvent event) {
    public void keyPressed( KeyEvent event) {
    public void keyReleased( KeyEvent event) {
    Object source= event.getSource();
    if( source == list) {
    int index= list.getSelectedIndex();
    public void keyTyped( KeyEvent event) {
    public void mousePressed( MouseEvent e) {
    public void mouseReleased( MouseEvent e) {
    public void mouseEntered( MouseEvent e) {
    public void mouseExited( MouseEvent e) {
    public void mouseClicked( MouseEvent e) {
    Object source= e.getSource();
    if( source == list) {
    int index= list.getSelectedIndex();
    if( index != -1) {
    Target target= (Target) targets.elementAt( index);
    tf_remote_address.setText( target.ip);
    tf_remote_data_port.setText( target.port);
    int index= list.locationToIndex( e.getPoint());
    public static void main( String[] args) {
    new Tx();
    class TargetListModel extends AbstractListModel {
    private Vector options;
    public TargetListModel( Vector options) {
    this.options= options;
    public int getSize() {
    int size;
    if( options == null) {
    size= 0;
    } else {
    size= options.size();
    return size;
    public Object getElementAt( int index) {
    String name;
    if( index < getSize()) {
    Target o= (Target)options.elementAt( index);
    name= o.localPort + " ---> " + o.ip + ":" + o.port;
    } else {
    name= null;
    return name;
    public void setData( Vector data) {
    options= data;
    fireContentsChanged( this, 0, data.size());
    class ListUpdater implements Runnable {
    String localPort, ip, port;
    TargetListModel listModel;
    Vector targets;
    public ListUpdater( String localPort, String ip, String port,
    TargetListModel listModel, Vector targets) {
    this.localPort= localPort;
    this.ip= ip;
    this.port= port;
    this.listModel= listModel;
    this.targets= targets;
    public void run() {
    Target target= new Target( localPort, ip, port);
    if( !targetExists( localPort, ip, port)) {
    targets.addElement( target);
    listModel.setData( targets);
    public boolean targetExists( String localPort, String ip, String port) {
    boolean exists= false;
    for( int i= 0; i < targets.size(); i++) {
    Target target= (Target) targets.elementAt( i);
    if( target.localPort.equals( localPort)
    && target.ip.equals( ip)
    && target.port.equals( port)) {
    exists= true;
    break;
    return exists;
    import java.awt.*;
    import java.io.*;
    import java.net.InetAddress;
    import java.util.*;
    import javax.media.*;
    import javax.media.protocol.*;
    import javax.media.format.*;
    import javax.media.control.TrackControl;
    import javax.media.control.QualityControl;
    import javax.media.rtp.*;
    import javax.media.rtp.event.*;
    import javax.media.rtp.rtcp.*;
    public class AVTransmitter implements ReceiveStreamListener, RemoteListener,
    ControllerListener {
    // Input MediaLocator
    // Can be a file or http or capture source
    private MediaLocator locator;
    private String ipAddress;
    private int portBase;
    private Processor processor = null;
    private RTPManager rtpMgrs[];
    private int localPorts[];
    private DataSource dataOutput = null;
    private int local_data_port;
    private Tx tx;
    public AVTransmitter( Tx tx, int data_port) {
    this.tx= tx;
    local_data_port= data_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 filename, Vector targets) {
    String result;
    locator= new MediaLocator( filename);
    // 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( targets);
    if (result != null) {
    processor.close();
    processor = null;
    return result;
    // Start the transmission
    processor.start();
    return null;
    * Use the RTPManager API to create sessions for each media
    * track of the processor.
    private String createTransmitter( Vector targets) {
    // Cheated. Should have checked the type.
    PushBufferDataSource pbds = (PushBufferDataSource)dataOutput;
    PushBufferStream pbss[] = pbds.getStreams();
    rtpMgrs = new RTPManager[pbss.length];
    localPorts = new int[ pbss.length];
    SessionAddress localAddr, destAddr;
    InetAddress ipAddr;
    SendStream sendStream;
    int port;
    SourceDescription srcDesList[];
    for (int i = 0; i < pbss.length; i++) {
    // for (int i = 0; i < 1; i++) {
    try {
    rtpMgrs[i] = RTPManager.newInstance();
    port = local_data_port + 2*i;
    localPorts[ i]= port;
    localAddr = new SessionAddress( InetAddress.getLocalHost(),
    port);
    rtpMgrs.initialize( localAddr);
    rtpMgrs[i].addReceiveStreamListener(this);
    rtpMgrs[i].addRemoteListener(this);
    for( int k= 0; k < targets.size(); k++) {
    Target target= (Target) targets.elementAt( k);
    int targetPort= new Integer( target.port).intValue();
    addTarget( localPorts[ i], rtpMgrs[ i], target.ip, targetPort + 2*i);
    sendStream = rtpMgrs[i].createSendStream(dataOutput, i);
    sendStream.start();
    } catch (Exception e) {
    e.printStackTrace();
    return e.getMessage();
    return null;
    public void addTarget( String ip, String port) {
    for (int i= 0; i < rtpMgrs.length; i++) {
    int targetPort= new Integer( port).intValue();
    addTarget( localPorts[ i], rtpMgrs[ i], ip, targetPort + 2*i);
    public void addTarget( int localPort, RTPManager mgr, String ip, int port) {
    try {
    SessionAddress addr= new SessionAddress( InetAddress.getByName( ip),
    new Integer( port).intValue());
    mgr.addTarget( addr);
    tx.addTargetToList( localPort + "", ip, port + "");
    } catch( Exception e) {
    e.printStackTrace();
    public void removeTarget( String ip, String port) {
    try {
    SessionAddress addr= new SessionAddress( InetAddress.getByName( ip),
    new Integer( port).intValue());
    for (int i= 0; i < rtpMgrs.length; i++) {
    rtpMgrs[ i].removeTarget( addr, "target removed from transmitter.");
    } catch( Exception e) {
    e.printStackTrace();
    boolean looping= true;
    public void controllerUpdate( ControllerEvent ce) {
    System.out.println( ce);
    if( ce instanceof DurationUpdateEvent) {
    Time duration= ((DurationUpdateEvent) ce).getDuration();
    System.out.println( "duration: " + duration.getSeconds());
    } else if( ce instanceof EndOfMediaEvent) {
    System.out.println( "END OF MEDIA - looping=" + looping);
    if( looping) {
    processor.setMediaTime( new Time( 0));
    processor.start();
    public void setLooping( boolean flag) {
    looping= flag;
    public void update( ReceiveStreamEvent event) {
    String timestamp= getTimestamp();
    StringBuffer sb= new StringBuffer();
    if( event instanceof InactiveReceiveStreamEvent) {
    sb.append( timestamp + " Inactive Receive Stream");
    } else if( event instanceof ByeEvent) {
    sb.append( timestamp + " Bye");
    } else {
    System.out.println( "ReceiveStreamEvent: "+ event);
    tx.rtcpReport( sb.toString());
    public void update( RemoteEvent event) {
    String timestamp= getTimestamp();
    if( event instanceof ReceiverReportEvent) {
    ReceiverReport rr= ((ReceiverReportEvent) event).getReport();
    StringBuffer sb= new StringBuffer();
    sb.append( timestamp + " RR");
    if( rr != null) {
    Participant participant= rr.getParticipant();
    if( participant != null) {
    sb.append( " from " + participant.getCNAME());
    sb.append( " ssrc=" + rr.getSSRC());
    } else {
    sb.append( " ssrc=" + rr.getSSRC());
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    width = 176;
    height = 144;
    } else {
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    height = 288;
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    private boolean failed = false;
    Integer getStateLock() {
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