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  1. #1
    Join Date
    Feb 2006

    problem in capturing webcam image

    To capture image directly, I'm using the following code:

    import java.io.*;
    import java.awt.*;
    import java.util.Enumeration;
    import java.util.Properties;
    import java.util.Vector;
    import javax.media.*;
    import javax.media.control.*;
    import javax.media.protocol.*;
    import javax.media.util.*;
    import javax.media.format.RGBFormat;
    import javax.media.format.VideoFormat;

    import javax.media.*;
    import javax.media.control.*;
    import javax.media.util.*;
    import java.awt.image.*;
    import java.awt.event.*;

    import javax.swing.*;
    import javax.imageio.*;
    import javax.swing.*;
    import javax.swing.border.*;
    import java.io.*;
    import javax.media.*;
    import javax.media.datasink.*;
    import javax.media.format.*;
    import javax.media.protocol.*;
    import javax.media.util.*;
    import javax.media.control.*;
    import java.util.*;
    import java.awt.*;
    import java.awt.image.*;
    import java.awt.event.*;
    import com.sun.image.codec.jpeg.*;
    import java.io.IOException;
    import java.util.Locale;
    import javax.imageio.ImageReader;
    import javax.imageio.spi.ImageReaderSpi;
    import javax.imageio.stream.ImageInputStream;
    import com.sun.media.protocol.vfw.VFWCapture; // JMF 2.1.1e version

    // set up player
    JPanel videoPanel = new JPanel();
    // note I just set the media locator directly
    MediaLocator ml = new MediaLocator("vfw://0");
    try {
    Manager.setHint(Manager.LIGHTWEIGHT_RENDERER, new Boolean(true));
    player = Manager.createRealizedPlayer(ml);
    Component comp;
    if ((comp = player.getVisualComponent()) != null) {
    videoPanel.add(comp, BorderLayout.CENTER);
    videoPanel.setSize(new Dimension(320, 240));
    videoPanel.setMinimumSize(new Dimension(320, 240));
    videoPanel.setMaximumSize(new Dimension(320, 240));
    catch (Exception e) {
    // process error

    // action code on capture button
    public void actionPerformed(ActionEvent e) {
    JComponent c = (JComponent) e.getSource();
    if (c == capture) {
    // Grab the frame
    FrameGrabbingControl fgc = (FrameGrabbingControl) player.getControl("javax.media.control.FrameGrabbingControl");
    Buffer buf = fgc.grabFrame();
    // Convert to image
    BufferToImage btoi = new BufferToImage((VideoFormat)buf.getFormat());
    Image img = btoi.createImage(buf);
    // now go and display the captured image

    But it gives the error package javax.media does not exist. I'm using jdk 1.4. Classpath is set becoz it doesn't give error for javax.swing, which I'm using in my code. What could be the problem?

  2. #2
    Join Date
    Mar 2004
    Those classes are part of the standard jsdk. If they are, I dont see them in the standard API for 1.4. Have you downloaded JMF?

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