Save the capture from a WebCam to a file

Hi!
I am trying to save the capture from a webcam to a file. This should be really easy but I have this stack trace when closing the Processor:
java.lang.NullPointerException
     at com.sun.media.multiplexer.video.AVIMux.writeFooter(AVIMux.java:827)
     at com.sun.media.multiplexer.BasicMux.close(BasicMux.java:142)
     at com.sun.media.BasicMuxModule.doClose(BasicMuxModule.java:172)
     at com.sun.media.PlaybackEngine.doClose(PlaybackEngine.java:872)
     at com.sun.media.BasicController.close(BasicController.java:261)
     at com.sun.media.BasicPlayer.doClose(BasicPlayer.java:229)
     at com.sun.media.BasicController.close(BasicController.java:261)
     at com.mdarveau.WebCamGrabber.TestWebCam.<init>(TestWebCam.java:47)
     at com.mdarveau.WebCamGrabber.TestWebCam.main(TestWebCam.java:59)Any idea why? It is probably something stupid in my code but I can't find it!
Here is the code:
    //Get the original source
    CaptureDeviceInfo webCam = CaptureDeviceManager.getDevice("vfw:Video Blaster WebCam 3/WebCam Plus (VFW):1");
    DataSource cam = Manager.createDataSource(webCam.getLocator());
    cam.connect();
    Format [] formats = {new VideoFormat(null) };
    FileTypeDescriptor ftd = new FileTypeDescriptor("video.x_msvideo");
    ProcessorModel pm = new ProcessorModel(cam, formats, ftd);
    Processor p = Manager.createRealizedProcessor(pm);
    MediaLocator save = new MediaLocator("file:test.avi");
    DataSink datasink = Manager.createDataSink(p.getDataOutput(), save);
    datasink.open();
    datasink.start();
    Thread.sleep(5000);
    p.stop();
    p.close();
    datasink.close();Thanks!
Manuel Darveau

I think you should start the processor, just after the datasink is started.
datasink.satrt();
p.start();
Try it and ask again if it's not the problem.

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