Read Movie and frames using Open-CV

int main( int argc, char** argv )
{


CvCapture* capture = 0;
IplImage *frame, *frame_copy = 0;
static CvMemStorage* storage = cvCreateMemStorage(0);

capture = cvCaptureFromAVI( "G:\FlickAnimation.avi" );
cvNamedWindow( "Picture:", 1 );

int index = 0;
if( capture )
{
for(;;)
{
if( !cvGrabFrame( capture ))
break;
frame = cvRetrieveFrame( capture );


if( !frame )
    break;
else
    {
        index++;
        //save image
        std::string s;
        std::stringstream out;
        out << index;
        s = out.str();
        string location = "G:\\movie\\"+s+".jpg";
        cvSaveImage(location.c_str(),frame);
    }
if( !frame_copy )
    frame_copy = cvCreateImage(cvSize(frame->width,frame->height), IPL_DEPTH_8U, frame->nChannels );

if( frame->origin == IPL_ORIGIN_TL )
    cvCopy( frame, frame_copy, 0 );
else
    cvFlip( frame, frame_copy, 0 );

cvShowImage("Picture:",frame_copy);


// Varying this will vary the speed of the avi file
if( cvWaitKey( 20 ) >= 0 )
break;
}

cvReleaseImage( &frame_copy );
cvReleaseCapture( &capture );
}

cvClearMemStorage( storage );
cvDestroyWindow("Picture:");
}