Opencv——将摄像头拍摄写成视频文件

#include"cv.h"
#include"highgui.h"

int main(int argc, char** argv)
{
cvNamedWindow("camera", CV_WINDOW_AUTOSIZE);
argc = 1;
CvCapture* capture;
capture = cvCreateCameraCapture(1);//如果不行换成-1,0,1试试
assert(capture != NULL);
IplImage* frame;
CvSize size = cvSize((int)cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH),
(int)cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT));

double fps = cvGetCaptureProperty(
capture,
CV_CAP_PROP_FPS//帧率
);
CvVideoWriter* writer = cvCreateVideoWriter(  // On linux Will only work if you've installed ffmpeg development files correctly,
"D:\\Opencv\\testData\\camera.avi",                               // otherwise segmentation fault.  Windows probably better.
CV_FOURCC('D', 'X', '5', '0'),
15,//摄像头好像帧率获取出来为0，故设为15
size
);
IplImage* imgWrite = cvCreateImage(size, 8, 3);
while (1){
frame = cvQueryFrame(capture);
if (!frame)
break;
char c = cvWaitKey(10);
if (c == 27) break;
cvCopy(frame, imgWrite);
cvWriteToAVI(writer, imgWrite);
cvShowImage("camera", frame);
}

cvReleaseCapture(&capture);
cvReleaseVideoWriter(&writer);
cvDestroyWindow("camera");
return 0;
}