#include <iostream>
#include <cv.h>
#include <cvaux.h>
#include <highgui.h>
#pragma comment(lib, "ml.lib")
#pragma comment(lib, "cv.lib")
#pragma comment(lib, "cvaux.lib")
#pragma comment(lib, "cvcam.lib")
#pragma comment(lib, "cxcore.lib")
#pragma comment(lib, "cxts.lib")
#pragma comment(lib, "highgui.lib")
#pragma comment(lib, "cvhaartraining.lib")
using namespace std;
int main()
{
CvCapture* capture = cvCaptureFromCAM(-1);
CvVideoWriter* video = NULL;
IplImage* frame = NULL;
int n;
if(!capture) //如果不能打开摄像头给出警告
{
std::cout << "Can not open the camera." << std::endl;
return -1;
}
else
{
frame = cvQueryFrame(capture); //首先取得摄像头中的一帧
video = cvCreateVideoWriter("camera.avi", CV_FOURCC('X', 'V', 'I', 'D'), 25,
cvSize(frame->width,frame->height)); //创建CvVideoWriter对象并分配空间
//保存的文件名为camera.avi,编码要在运行程序时选择,大小就是摄像头视频的大小,帧频率是32
if(video) //如果能创建CvVideoWriter对象则表明成功
{
cout<<"VideoWriter has created."<<endl;
}
cvNamedWindow("Camera Video",1); //新建一个窗口
int i = 0;
while(i <= 200) // 让它循环200次自动停止录取
{
frame = cvQueryFrame(capture); //从CvCapture中获得一帧
if(!frame)
{
std::cout << "Can not get frame from the capture." << std::endl;
break;
}
n = cvWriteFrame(video, frame); //判断是否写入成功,如果返回的是1,表示写入成功
std::cout << n << std::endl;
cvShowImage("Camera Video",frame); //显示视频内容的图片
i++;
if(cvWaitKey(2) > 0)
break; //有其他键盘响应,则退出
}
cvReleaseVideoWriter(&video);
cvReleaseCapture(&capture);
cvDestroyWindow("Camera Video");
}
return 0;
}
OpenCV调用摄像头录像并保存下来
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