用OpenCV读取视频的简单例子

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

int main(int argc,char** argv)
{
CvCapture* g_capture = cvCreateFileCapture("D:\\test2.avi");    // 视频地址

IplImage* frame;
string originVideoWinName = "Video_Origin";

cvNamedWindow(originVideoWinName.c_str(),CV_WINDOW_AUTOSIZE);
while (1)
{
frame = cvQueryFrame(g_capture);                                      // 捕获每帧
if (!frame)
{
break;
}
cvShowImage(originVideoWinName.c_str(),frame);
char c = cvWaitKey(33);
if (c==27)
{
break;
}
}
cvReleaseCapture(&g_capture);
cvDestroyWindow(originVideoWinName.c_str());
}