用opencv查看视频信息(视频的宽度、高度、帧率和总得帧数)

// look_up_fps.cpp : 定义控制台应用程序的入口点。
//

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

int _tmain(int argc, _TCHAR* argv[])
{
	IplImage *nFrames = NULL;
	CvCapture* pCapture = NULL;

	if( !(pCapture = cvCaptureFromAVI("C:\\zcd.avi")))
	{
		fprintf(stderr, "Can not open camera.\n");
		return -1;
	}

	int frameH    = (int) cvGetCaptureProperty(pCapture, CV_CAP_PROP_FRAME_HEIGHT);  
	int frameW    = (int) cvGetCaptureProperty(pCapture, CV_CAP_PROP_FRAME_WIDTH);  
	int fps       = (int) cvGetCaptureProperty(pCapture, CV_CAP_PROP_FPS);  
	int numFrames = (int) cvGetCaptureProperty(pCapture, CV_CAP_PROP_FRAME_COUNT);  
	printf("vedio's \nwidth = %d\t height = %d\n video's fps = %d\t nums = %d", frameW, frameH, fps, numFrames);

	getchar();
	return 0;
}