C++ Opencv播放AVI

#include "cxcore.h"
#include "cvcam.h"
#include "windows.h"
#include <string>
#include "highgui.h"

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

	CvCapture * capture = cvCreateFileCapture ("camera.avi");
    if(capture==NULL)
	{
		printf("NO capture");
		return 1;
	};

	double fps=cvGetCaptureProperty(capture, CV_CAP_PROP_FPS );   

	int vfps = 1000 / fps;
    printf("%5.1f\t%5d\n",fps,vfps);

	cvNamedWindow("example",CV_WINDOW_AUTOSIZE);
	IplImage * frame;

	while(1)
	{
		frame = cvQueryFrame( capture );
		if(!frame)
			break;
		cvShowImage("example",frame);
		char c = cvWaitKey(vfps);
		if(c == 27 )break;
	}

	 cvReleaseCapture(&capture);
	 cvDestroyWindow("example");
	 return 0;
}