CaptureFromAVI

#include <cv.h>
#include <highgui.h>

void main(void){

    IplImage *img;
    CvCapture *capture;

    cvNamedWindow( "win", CV_WINDOW_AUTOSIZE );
    capture = cvCaptureFromAVI("result.avi");

    while(1){
    img = cvQueryFrame(capture);
    cvShowImage( "win", img ); 
    if (cvWaitKey(30); == 27 ) break;    //ESC
    }

}