"Do not display" Problem

Question

hi friends,
at first, I use a Player to play a DataSource I captured from my webcam, that's ok.
second, I use a Processor to transcode the cloned DataSource I captured from my webcam, my video disappeared.
what's the matter? Thx.

Answer 1

import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.io.IOException;
import javax.media.CannotRealizeException;
import javax.media.CaptureDeviceInfo;
import javax.media.CaptureDeviceManager;
import javax.media.Format;
import javax.media.Manager;
import javax.media.MediaLocator;
import javax.media.NoDataSourceException;
import javax.media.NoPlayerException;
import javax.media.NoProcessorException;
import javax.media.Player;
import javax.media.Processor;
import javax.media.control.TrackControl;
import javax.media.format.VideoFormat;
import javax.media.protocol.DataSource;
import javax.swing.JFrame;
public class CaptureTranscode {
     private String videoDevice = "vfw:Microsoft WDM Image Capture (Win32):0";
     private String audioDevice = "DirectSoundCapture";
     private CaptureDeviceInfo cdi1 = CaptureDeviceManager
               .getDevice(videoDevice);
     private CaptureDeviceInfo cdi2 = CaptureDeviceManager
               .getDevice(audioDevice);
     private DataSource ds1 = null;
     private DataSource ds2 = null;
     private DataSource dsVideo = null;
     private DataSource dsAudio = null;
     private Player player1 = null;
     private Player player2 = null;
     private Processor processor = null;
     private JFrame frame;
     private Container contentPane;
     public CaptureSend() {
          // iniGUI
          frame = new JFrame("");
          frame.setBounds(120, 90, 800, 600);
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          contentPane = frame.getContentPane();
          frame.setVisible(true);
          System.out.println("frame initialed!");
     public void play() {
          MediaLocator ml1 = cdi1.getLocator();
          MediaLocator ml2 = cdi2.getLocator();
          System.out.println("MedaiLocator created!");
          try {
               this.ds1 = Manager.createDataSource(ml1);
               System.out.println("ds1 created!");
               this.dsVideo = Manager.createCloneableDataSource(ds1);               
               System.out.println("dsAudio cloned!");               
               this.player1 = Manager.createRealizedPlayer(ds1);
               System.out.println("player1 created!");
               player1.start();
               System.out.println("player1 started!");
               this.ds2 = Manager.createDataSource(ml2);
               System.out.println("ds2 created!");               
               this.dsAudio = Manager.createCloneableDataSource(ds2);
               System.out.println("dsAudio cloned!");
               this.player2 = Manager.createRealizedPlayer(ds2);
               System.out.println("player2 created!");
               player2.start();
               System.out.println("player2 started!");
               Component c1 = player1.getVisualComponent();
               if (c1 != null) {
                    contentPane.add(c1);
                    c1.setBounds(40, 30, 400, 300);
                    System.out.println("visualComponent added!");
               Component c2 = player1.getControlPanelComponent();
               if (c2 != null) {
                    contentPane.add(c2);
                    c2.setBounds(40, 330, 400, 20);
                    System.out.println("controlPanelComponent added!");
          } catch (NoDataSourceException e) {
               e.printStackTrace();
          } catch (IOException e) {
               e.printStackTrace();
          } catch (NoPlayerException e) {
               e.printStackTrace();
          } catch (CannotRealizeException e) {
               e.printStackTrace();
     public void transCode() {
          try {
               this.processor = Manager.createProcessor(dsVideo);
          } catch (NoProcessorException e) {
               System.out.println(e);
               e.printStackTrace();
          } catch (IOException e) {
               System.out.println(e);
               e.printStackTrace();
          System.out.println("processor created!");
          this.processor.configure();
          System.out.println();
          this.processor.deallocate();
          TrackControl[] tracks = processor.getTrackControls();
          System.out.println("TrackControl[] tracks created!");
          for (int i = 0; i < tracks.length; i++) {
               System.out.println("tracks[" + i + "]: " + tracks.toString());
               Format[] supported = tracks[i].getSupportedFormats();
               System.out.println("tracks[" + i + "] supported Formats: "
                         + supported);
               Format chosen = this.checkForVideoSizes(tracks[i].getFormat(),
                         supported[0]);
               System.out.println("chosen: " + chosen);
               tracks[i].setFormat(chosen);
               System.out.println("tracks[" + i + "] setted!");
     public Format checkForVideoSizes(Format original, Format supported) {
          int width, height;
          Dimension size = ((VideoFormat) original).getSize();
          Format jpegFmt = new Format(VideoFormat.JPEG_RTP);
          Format h263Fmt = new Format(VideoFormat.H263_RTP);
          if (supported.matches(jpegFmt)) {
               width = (size.width % 8 == 0 ? size.width
                         : (int) (size.width / 8) * 8);
               height = (size.height % 8 == 0 ? size.height
                         : (int) (size.height / 8) * 8);
          } else if (supported.matches(h263Fmt)) {
               if (size.width < 128) {
                    width = 128;
                    height = 96;
               } else if (size.width < 176) {
                    width = 176;
                    height = 144;
               } else {
                    width = 352;
                    height = 288;
          } else {               
               return supported;
          return (new VideoFormat(null, new Dimension(width, height),
                    Format.NOT_SPECIFIED, null, Format.NOT_SPECIFIED)).intersects
          (supported);
     public void transmitte() {
     public static void main(String[] args) {
          CaptureSend cs = new CaptureSend();
          cs.play();
          cs.transCode();
oky, and now what does your crystal show?