Grab frames from mpeg video without framegrabber card?

i would like to grab images from an mpeg playing on my computer. ideally the video would play in an ActiveX container and my VI would grab an image when it was ready. the application is for testing of computer vision algorithms. you can email me at [email protected] with suggestions. thank you.

vtruel wrote in message news:<[email protected]>...
> thanks Evan. but im trying to grab the images for immediate
> processing by my algorithm. and the image should be only the video,
> not the entire front panel. is there a way to do this?
Hi,
IVision has functions for grabbing frames out of mpeg file (under the
media file group)and you can process them frame by frame. Get a demo
version to try out at:
http://www.hytekautomation.com/Products/IVision.html
Feel free to ask me any questions regarding the software.
Irene
[email protected]

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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");
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// frame extract method
public Image captureCurrent() throws Exception
        Buffer frame = getFrameGrabCntrl().grabFrame();
        BufferToImage stopBuffer = new BufferToImage((VideoFormat) frame.getFormat());
        return stopBuffer.createImage(frame);
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// 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
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      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
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      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?

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]

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Hi all,
I would like to know what is the best way to extract keyframe from a video.
My Status (butr I can cahnge it)
I'm Marco and I'm using JMF; I need for an help because I don't know how to extract keyframes from AVI and MPG files.
I'm using the code posted in this forum for extracting all frame in a video with the adding of an if expression that in the accessFrame method that I report below:
void accessFrame(Buffer frame) {
BufferToImage stopBuffer = new BufferToImage((VideoFormat) frame.getFormat());
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Cheers and thank u
Marco

>
With the code yoodleyee posted, frames can be extracted and converted from the raw decoded format into images, but no guarantee that the frame extracted is a key frame, isnt it?Actually, there is such a guarantee...because the FrameGrabbingControl isn't implemented in any video format that uses keyframes. So, if it works, then every frame of the video is a keyframe, and it won't work otherwise.
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Re: how to capture a frame from a video file and save it as a jpeg

package com.snn.multimedia;
* @(#)FrameAccess.java 1.5 01/03/13
* Copyright (c) 1999-2001 Sun Microsystems, Inc. All Rights Reserved.
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
import java.util.Date;
import java.util.Arrays;
import java.util.Iterator;
import javax.imageio.ImageIO;
import javax.imageio.stream.ImageOutputStream;
import javax.imageio.ImageWriter;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferByte;
import javax.media.*;
import javax.media.control.FramePositioningControl;
import javax.media.control.TrackControl;
import javax.media.Format;
import javax.media.format.*;
import javax.media.util.BufferToImage;
import javax.media.util.ImageToBuffer;
import java.io.FileOutputStream;
import java.io.OutputStream;
import com.sun.image.codec.jpeg.*;
* 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 java.awt.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);
// Obtain the track controls.
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;
VideoFormat currentFormat = (VideoFormat)videoTrack.getFormat();
System.err.println("Video format: " + videoTrack.getFormat() );
videoTrack.setFormat(new VideoFormat("RGB", currentFormat.getSize(), currentFormat.getMaxDataLength(), currentFormat.getDataType(), currentFormat.getFrameRate()));
// Instantiate and set the frame access codec to the data flow path.
try
// Try to retrieve a FramePositioningControl from the player.
FramePositioningControl fpc = (FramePositioningControl) p.getControl("javax.media.control.FramePositioningControl");
if (fpc == null)
System.err.println("The player does not support FramePositioningControl.");
System.err.println("There's no reason to go on for the purpose of this demo.");
return false;
Time duration = p.getStopTime();
long totalFrames = 0;
if (duration != Duration.DURATION_UNKNOWN)
System.err.println("Movie duration: " + duration.getSeconds());
totalFrames = fpc.mapTimeToFrame(duration);
if (totalFrames != FramePositioningControl.FRAME_UNKNOWN)
System.err.println("Total # of video frames in the movies: "
+ totalFrames);
} else
System.err.println("The FramePositiongControl does not support mapTimeToFrame.");
} else
System.err.println("Movie duration: unknown");
long[] frames;
if (totalFrames > 0L)
double intervalDouble = Math.floor(totalFrames / 5.0);
long interval = new Double(intervalDouble).longValue();
frames = new long[5];
frames[0] = 1;
frames[1] = frames[0] + interval;
frames[2] = frames[1] + interval;
frames[3] = frames[2] + interval;
frames[4] = frames[3] + interval;
} else
frames = new long[1];
frames[0] = 1;
// Codec codec[] = { new PreAccessCodec(), new PostAccessCodec()};
Codec codec[] = { new OverlayCodec(frames)};
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)
if (args.length == 0)
prUsage();
System.exit(0);
String url = args[0];
if (url.indexOf(":") < 0)
prUsage();
System.exit(0);
MediaLocator ml;
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 OverlayCodec extends PreAccessCodec
long[] myFrames;
BufferedImage work;
byte[] workData;
int width;
int height;
int dataLen;
RGBFormat supportedRGB = new RGBFormat(null, // size
Format.NOT_SPECIFIED, // maxDataLength
Format.byteArray, // dataType
Format.NOT_SPECIFIED, // frameRate
24, // bitsPerPixel
3, 2, 1, // red/green/blue masks
3, // pixelStride
Format.NOT_SPECIFIED, // lineStride
Format.FALSE, // flipped
Format.NOT_SPECIFIED); // endian
public OverlayCodec(long[] frames)
// force specific input format
supportedIns = new Format[] {
supportedRGB};
myFrames = new long[frames.length];
System.arraycopy(frames, 0, myFrames, 0, frames.length);
public String getName()
return "Capture Codec";
public Format setInputFormat(Format format)
if ((format != null) && (format instanceof RGBFormat)
&& format.matches(supportedRGB))
// set up working image if valid type
// (it should be since we insisted!)
Dimension size = ((RGBFormat) format).getSize();
width = size.width;
height = size.height;
dataLen = width * height * 3;
if ((dataLen > 0)
&& ((work == null) || (work.getWidth() != width)
|| (work.getHeight() != height)))
// working image - same 3-byte format as buffer
work = new BufferedImage(width, height,
BufferedImage.TYPE_3BYTE_BGR);
// reference to pixel data
workData = ((DataBufferByte) work.getRaster().getDataBuffer()).getData();
return format;
* Callback to access individual video frames.
void accessFrame(Buffer in)
try
if (Arrays.binarySearch(myFrames, in.getSequenceNumber()) >= 0)
BufferToImage stopBuffer = new BufferToImage((VideoFormat) in.getFormat());
Image stopImage = stopBuffer.createImage(in);
BufferedImage outImage = new BufferedImage(140, 96,
BufferedImage.TYPE_INT_RGB);
Graphics og = outImage.getGraphics();
og.drawImage(stopImage, 0, 0, 140, 96, null);
FileOutputStream fout = new FileOutputStream("image"
+ in.getSequenceNumber() + ".jpg");
writeImage(outImage, fout);
catch (Exception e)
e.printStackTrace();
public int process(Buffer in, Buffer out)
try
accessFrame(in);
BufferToImage stopBuffer = new BufferToImage((VideoFormat) in.getFormat());
Image stopImage = stopBuffer.createImage(in);
ImageToBuffer outImagebuffer = new ImageToBuffer();
out = outImagebuffer.createBuffer(stopImage, p.getRate());
// Swap the data between the input & output.
in.copy(out, true);
catch (Exception e)
e.printStackTrace();
return BUFFER_PROCESSED_OK;
void writeImage(BufferedImage outImage, OutputStream os) throws Exception
Iterator writers = ImageIO.getImageWritersByFormatName("jpg");
ImageWriter writer = (ImageWriter) writers.next();
ImageOutputStream ios = ImageIO.createImageOutputStream(os);
writer.setOutput(ios);
writer.write(outImage);
ios.close();

Hi,
I have a jpeg movie file 60 mins long and a text file tell me five time-lines for breaking the movie. For example, break the movie at 10:21, 16:05�
The final output should be five small jpeg movie files. Each file contains a 90 sec (30 sec before the break time and 60 sec after the break time).
Do you know any java library (jar) contain the library that can help me on programming this? Any existing source code? Any SDK for a movie editor can do that?
Please help.
Thanks
Kenny

Premiere Pro 7.0 dropping random frames from original video

Here is one of many problems I am running into. When I import original video into Adobe Premiere Pro 7.0 it always leaves out a few frames in random spots scattered throughout a clip (I'm guessing this is what is referred to as dropped frames).
I first noticed this when I went to sync the audio mp3 files, which are imported seperatly, to the video clips and found that the audio clips are a few frames longer; and the audio/video don't match up.
I was hoping someone could shine some light onto why this is happening and what can be done to remedy it. I've fiddled around with differnt settings when loading a new project with no success.
I am importing the origina video from a folder on my desktop. It is MPEG-2 format and came from my Sony Handycam DCR SR45 camcorder. Below are the properties for the video according to a video player on my computer.
Video:
MPEG-2 Video
720x480 (16:9)
29.97fps 9100Kbps
Audio:
Dolby AC3 48000Hz stereo 256Kbps (this audio doesn't show up with imported video files which is why I import seperate mp3 audio)
P.S.
I've recently been told that MPEG-2 files are not ideal for video editing. I've also been told that Premiere Pro doesn't recognize AC3 audio, which is why I am importing the audio seperatly as mp3 files that I have created in another program. Also I've been told that the camcorder I use is not ideal for editing purposes.
So, if anyone sees any reasons to disagree or concur with these statements, please let me know. But, as for right now, I currently have existing video from this camcorder that I MUST make work in Adobe Premiere Pro, so please help me work with what I got. Thanks.

I have began uploading 2 vidoes to the DropBox.
One is the original that came from my camcorder, the other is the attempted converted DV AVI.
The footage is a clip of a turkey hunt i filmed for a friend where a turkey is shot at and missed. The video is not that great but I still need it and other similar clips.
I'm not sure if your familar with Dropbox or not. We mainly use it for PDF's from architects and Contractors, but I am trying it for video for the first time. Here is what it states for sharing files publicly:
function(){return A.apply(null,[this].concat($A(arguments)))}
The Public Folder lets you easily share single files in your Dropbox. Any file you put in this folder gets its own Internet link so that you can share it with others-- even non-Dropbox users! These links work even if your computer’s turned off.
Step 1: Drop a file into the Public folder.
Step 2: Right-click/control-click this file, then choose Dropbox > Copy Public Link. This copies the Internet link to your file so that you can paste it somewhere else.
That's it! You can now share this file with others: just paste the link into e-mails, instant message conversations, blogs, etc.!
If you'd like more help with sharing files, head here: http://www.getdropbox.com/help/16
Happy Dropboxing!
- The Dropbox Team
Note: You can only link to actual files within your Public Folder, not to folders.
I guess I will try to paste these links now even though they are still uploading. I will re-paste them later when the upload is complete.
Original Video - http://dl.dropbox.com/u/5773253/Tom%20Turkey%20-%20Original%20MPEG2.MPG
DV AVI - http://dl.dropbox.com/u/5773253/Tom%20Turkey%20-%20Converted%20DV%20AVI.avi
Anyone else who want's to play around with these videos have at it.
I'm glad I found this forum. Thanks for helpin'

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