Video Frame as Image - Help

Hello,
I am having some serious problems in trying to get this working
so if u have any idea to get it working please help.
Aim : I need screen shots of a movie, what that means is I need certain frames of the movie as images. Say for example, the first frame, the 20th frame, and the 60the frame, ( eg for a 100 frame movie)
I have been breaking my head with FramePositioningControl and FrameGrabbingControl it keep returning null :(
I need this to work for all types of movies that i can play with JMF Player. So please tell me if there is any way to get a particular frame from a movie as an image.
I have looked at vid2jpg.zip and have no clue how to use it.
Thanks in advance.

Hi..
I need to play a video frame by frame. I dont need to extract the frames as images. When I run seek.java with an mpg file, it gives the following output.
Total # of video frames in the movies: 0
Step forward 1 frame.
Current frame: 0
Step forward 1 frame.
Current frame: 0
Step forward 1 frame.
Current frame: 0
Step forward 1 frame.
Current frame: 0
Step forward 1 frame.
Current frame: 0 .......so on
I am not understanding what is the problem. It is neither working with avi files. Please help me.
pln

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Hello everyone. I am working on a project on video processing, and i need to be able to do image processing on individual video frames. However, to do this, I need to convert the frames to an appropriate format, namely jpeg. It is actually the conversion from buffer frame to BufferedImage that is important, as i already have an approximate knowledge of filewriter for the saving of already rendered file.
The original frameaccess code can be found here: http://java.sun.com/products/java-media/jmf/2.1.1/solutions/FrameAccess.html
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P.s: i am only a beginner to intermediate student in java and programming in general so...

Here is the code i am currently using.
package Test;
import java.io.*;
import java.util.*;
import java.awt.*;
import javax.media.*;
import javax.media.control.TrackControl;
import javax.media.Format;
import javax.media.format.*;
import javax.media.bean.playerbean.MediaPlayer;
import javax.media.util.*;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.awt.image.*;
import javax.imageio.ImageWriter;
import javax.imageio.ImageIO;
import javax.media.control.FrameGrabbingControl;
* Sample program to access individual video frames by using a
* "pass-thru" codec. The codec is inserted into the data flow
* path. As data pass through this codec, a callback is invoked
* for each frame of video data.
public class FrameAccess extends Frame implements ControllerListener {
Processor p;
Object waitSync = new Object();
boolean stateTransitionOK = true;
* Given a media locator, create a processor and use that processor
* as a player to playback the media.
* During the processor's Configured state, two "pass-thru" codecs,
* PreAccessCodec and PostAccessCodec, are set on the video track.
* These codecs are used to get access to individual video frames
* of the media.
* Much of the code is just standard code to present media in JMF.
public boolean open(MediaLocator ml) {
     try {
     p = Manager.createProcessor(ml);
     } catch (Exception e) {
     System.err.println("Failed to create a processor from the given url: " + e);
     return false;
     p.addControllerListener(this);
     // Put the Processor into configured state.
     p.configure();
     if (!waitForState(p.Configured)) {
     System.err.println("Failed to configure the processor.");
     return false;
     // So I can use it as a player.
     p.setContentDescriptor(null);
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     TrackControl tc[] = p.getTrackControls();
     if (tc == null) {
     System.err.println("Failed to obtain track controls from the processor.");
     return false;
     // Search for the track control for the video track.
     TrackControl videoTrack = null;
     for (int i = 0; i < tc.length; i++) {
     if (tc.getFormat() instanceof VideoFormat) {
          videoTrack = tc[i];
          break;
     if (videoTrack == null) {
     System.err.println("The input media does not contain a video track.");
     return false;
     System.err.println("Video format: " + videoTrack.getFormat());
     // Instantiate and set the frame access codec to the data flow path.
     try {
     Codec codec[] = { new PreAccessCodec(),
                    new PostAccessCodec()};
     videoTrack.setCodecChain(codec);
     } catch (UnsupportedPlugInException e) {
     System.err.println("The process does not support effects.");
     // Realize the processor.
     p.prefetch();
     if (!waitForState(p.Prefetched)) {
     System.err.println("Failed to realize the processor.");
     return false;
     // Display the visual & control component if there's one.
     setLayout(new BorderLayout());
     Component cc;
     Component vc;
     if ((vc = p.getVisualComponent()) != null) {
     add("Center", vc);
     if ((cc = p.getControlPanelComponent()) != null) {
     add("South", cc);
     // Start the processor.
     p.start();
     setVisible(true);
     return true;
public void addNotify() {
     super.addNotify();
     pack();
* Block until the processor has transitioned to the given state.
* Return false if the transition failed.
boolean waitForState(int state) {
     synchronized (waitSync) {
     try {
          while (p.getState() != state && stateTransitionOK)
          waitSync.wait();
     } catch (Exception e) {}
     return stateTransitionOK;
* Controller Listener.
public void controllerUpdate(ControllerEvent evt) {
     if (evt instanceof ConfigureCompleteEvent ||
     evt instanceof RealizeCompleteEvent ||
     evt instanceof PrefetchCompleteEvent) {
     synchronized (waitSync) {
          stateTransitionOK = true;
          waitSync.notifyAll();
     } else if (evt instanceof ResourceUnavailableEvent) {
     synchronized (waitSync) {
          stateTransitionOK = false;
          waitSync.notifyAll();
     } else if (evt instanceof EndOfMediaEvent) {
     p.close();
     System.exit(0);
* Main program
public static void main(String [] args) throws IOException {
     /*if (args.length == 0) {
     prUsage();
     System.exit(0);
     //String url = args[0];
     String url = new String ("file:D:FiMs/avpr.avi");
     if (url.indexOf(":") < 0) {
     prUsage();
     System.exit(0);
     MediaLocator ml;
     //MediaPlayer mp1 = new javax.media.bean.playerbean.MediaPlayer();
     //mp1.setMediaLocation(new java.lang.String("file:D:/FiMs/299_01_hi.mpg"));
     //mp1.start();
     if ((ml = new MediaLocator(url)) == null) {
     System.err.println("Cannot build media locator from: " + url);
     System.exit(0);
     FrameAccess fa = new FrameAccess();
     if (!fa.open(ml))
     System.exit(0);
static void prUsage() {
     System.err.println("Usage: java FrameAccess <url>");
* Inner class.
* A pass-through codec to access to individual frames.
public class PreAccessCodec implements Codec {
* Callback to access individual video frames.
     void accessFrame(Buffer frame) {
     // For demo, we'll just print out the frame #, time &
     // data length.
     long t = (long)(frame.getTimeStamp()/10000000f);
     System.err.println("Pre: frame #: " + frame.getSequenceNumber() +
               ", time: " + ((float)t)/100f +
               ", len: " + frame.getLength());
     * The code for a pass through codec.
     // We'll advertize as supporting all video formats.
     protected Format supportedIns[] = new Format [] {
     new VideoFormat(null)
     // We'll advertize as supporting all video formats.
     protected Format supportedOuts[] = new Format [] {
     new VideoFormat(null)
     Format input = null, output = null;
     public String getName() {
     return "Pre-Access Codec";
     // No op.
public void open() {
     // No op.
     public void close() {
     // No op.
     public void reset() {
     public Format [] getSupportedInputFormats() {
     return supportedIns;
     public Format [] getSupportedOutputFormats(Format in) {
     if (in == null)
          return supportedOuts;
     else {
          // If an input format is given, we use that input format
          // as the output since we are not modifying the bit stream
          // at all.
          Format outs[] = new Format[1];
          outs[0] = in;
          return outs;
     public Format setInputFormat(Format format) {
     input = format;
     return input;
     public Format setOutputFormat(Format format) {
     output = format;
     return output;
     public int process(Buffer in, Buffer out) {
     // This is the "Callback" to access individual frames.
     accessFrame(in);
     // Swap the data between the input & output.
     Object data = in.getData();
     in.setData(out.getData());
     out.setData(data);
     // Copy the input attributes to the output
     out.setFormat(in.getFormat());
     out.setLength(in.getLength());
     out.setOffset(in.getOffset());
     return BUFFER_PROCESSED_OK;
     public Object[] getControls() {
     return new Object[0];
     public Object getControl(String type) {
     return null;
public class PostAccessCodec extends PreAccessCodec {
     // We'll advertize as supporting all video formats.
     public PostAccessCodec() {
     supportedIns = new Format [] {
          new RGBFormat()
* Callback to access individual video frames.
     void accessFrame(Buffer frame) {
     // For demo, we'll just print out the frame #, time &
     // data length.
     long t = (long)(frame.getTimeStamp()/10000000f);
     System.err.println("Post: frame #: " + frame.getSequenceNumber() +
               ", time: " + ((float)t)/100f +
               ", len: " + frame.getLength());
     public String getName() {
     return "Post-Access Codec";
and here is what itprabhu5 proposed to use to convert and save the frames as .png(or .jpeg in the same way)
import java.io.*;
import java.util.*;
import java.awt.*;
import java.awt.image.*;
import javax.imageio.*;
import javax.media.*;
import javax.media.control.*;
import javax.media.format.*;
import javax.media.util.*;
* Grabs a frame from a Webcam, overlays the current date and time, and saves the frame as a PNG to c:\webcam.png
* @author David
* @version 1.0, 16/01/2004
public class FrameGrab
     public static void main(String[] args) throws Exception
          // Create capture device
          CaptureDeviceInfo deviceInfo = CaptureDeviceManager.getDevice("vfw:Microsoft WDM Image Capture (Win32):0");
          Player player = Manager.createRealizedPlayer(deviceInfo.getLocator());
          player.start();
          // Wait a few seconds for camera to initialise (otherwise img==null)
          Thread.sleep(2500);
          // Grab a frame from the capture device
          FrameGrabbingControl frameGrabber = (FrameGrabbingControl)player.getControl("javax.media.control.FrameGrabbingControl");
          Buffer buf = frameGrabber.grabFrame();
          // Convert frame to an buffered image so it can be processed and saved
          Image img = (new BufferToImage((VideoFormat)buf.getFormat()).createImage(buf));
          BufferedImage buffImg = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB);
          Graphics2D g = buffImg.createGraphics();
          g.drawImage(img, null, null);
          // Overlay curent time on image
          g.setColor(Color.RED);
          g.setFont(new Font("Verdana", Font.BOLD, 16));
          g.drawString((new Date()).toString(), 10, 25);
          // Save image to disk as PNG
          ImageIO.write(buffImg, "png", new File("c:\\webcam.png"));
          // Stop using webcam
          player.close();
          player.deallocate();
          System.exit(0);
however, i am unable to use it together with my code... i m not even sure if im using it at the right place.. (note that u will have to discard some lines from the second code, because it is actually grabbing frames from a webcam in that example)
if any1 can make it happen please help me. thx.

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Hai..
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This should do pretty much what you want, assuming that a slider is how you are controlling your video position. You are going to have to play around with it a little but it should give you the basic idea.
Attachments:
Slider.vi ‏35 KB

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