FrameGrabbingControl - grab frame problem with video type

Question

Hi all
I have a problem with extracting frames from a video.
Currently I am able to extracting video from some avi formats. But this method does not works for many formats. like mpg etc...
The FrameGrabbingControl object return null for many formats.
This is my code
public Player getVideoPlayer() throws Exception
        if (videoPlayer == null)
            File file = new File("E:\\Songs\\English\\Video\\Alizee\\20090209114235.avi");
            MediaLocator videoMediaLocator = new MediaLocator(file.toURL());
            videoPlayer = Manager.createRealizedPlayer(videoMediaLocator);
        return videoPlayer;
public FrameGrabbingControl getFrameGrabCntrl() throws Exception
        if (frameGrabCntrl == null)
            frameGrabCntrl = (FrameGrabbingControl) getVideoPlayer().getControl("javax.media.control.FrameGrabbingControl");
        return frameGrabCntrl;
// frame extract method
public Image captureCurrent() throws Exception
        Buffer frame = getFrameGrabCntrl().grabFrame();
        BufferToImage stopBuffer = new BufferToImage((VideoFormat) frame.getFormat());
        return stopBuffer.createImage(frame);
    }Here are some 3 sample media information I have tested with the program. First two works fine but 3rd one does not works.
// taken from http://www.exactfutures.com/index02.htm and downloaded http://www.exactfutures.com/vid2jpg.zip
// WORKS FINE
   General
      Complete name : E:\Songs\English\Video\Alizee\testcam04.avi
      Format : AVI
      Format/Info : Audio Video Interleave
      Format/Family : RIFF
      File size : 1.88 MiB
      PlayTime : 29s 596ms
      Bit rate : 533 Kbps
   Video #0
      Codec : Indeo 4
      Codec/Info : Intel Indeo Video 5.0 Wavelet
      PlayTime : 29s 596ms
      Bit rate : 528 Kbps
      Width : 320 pixels
      Height : 240 pixels
      Aspect ratio : 4/3
      Frame rate : 3.818 fps
      Bits/(Pixel*Frame) : 1.801
// recorded video from a webcam
// WORKS FINE
   General
      Complete name : C:\Program Files\MSI\MyGuard Live\VideoClip\20090209114235.avi
      Format : AVI
      Format/Info : Audio Video Interleave
      Format/Family : RIFF
      File size : 311 KiB
      PlayTime : 3s 200ms
      Bit rate : 710 Kbps
   Video #0
      Codec : Indeo 4
      Codec/Info : Intel Indeo Video 5.0 Wavelet
      PlayTime : 3s 200ms
      Bit rate : 705 Kbps
      Width : 640 pixels
      Height : 480 pixels
      Aspect ratio : 4/3
      Frame rate : 15.000 fps
      Bits/(Pixel*Frame) : 0.153
// downloaded avi sample video
// NOT WORKS
   General
      Complete name : E:\Songs\English\Video\Alizee\fvss_demo.avi
      Format : AVI
      Format/Info : Audio Video Interleave
      Format/Family : RIFF
      File size : 10.3 MiB
      PlayTime : 2mn 300ms
      Bit rate : 715 Kbps
   Video #0
      Codec : MS Video
      Codec/Info : Microsoft Video 1
      PlayTime : 2mn 300ms
      Bit rate : 638 Kbps
      Width : 160 pixels
      Height : 120 pixels
      Aspect ratio : 4/3
      Frame rate : 10.000 fps
      Bits/(Pixel*Frame) : 3.325
   Audio #1
      Codec : PCM
      Codec/Family : PCM
      Codec/Info : Microsoft PCM
      PlayTime : 2mn 300ms
      Bit rate : 64 Kbps
      Channel(s) : 1 channel
      Sampling rate : 8000 Hz
      Resolution : 8 bitsI think problem is the codec. Am I correct?
Could anyone please tell me why can't I use this FrameGrabbingControl object to extract frames?

Answer 1

deshan wrote:
Currently I am able to extracting video from some avi formats. But this method does not works for many formats. like mpg etc...
The FrameGrabbingControl object return null for many formats.That's expected behavior when the codec doesn't support capture...
Could anyone please tell me why can't I use this FrameGrabbingControl object to extract frames?Because it's not supported for that format.
But T.B.M. and I have recently worked on / posted a workaround that should capture any video format that JMF can play.
[http://forums.sun.com/thread.jspa?messageID=10596692#10596692]