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opencv2.0之后可以调用VideoWriter类来写视频
opencv采集视频并保存AVI视频到本地
#include <opencv2/opencv.hpp>
using namespace cv;
int main()
{
VideoCapture cap(0);
//获取采集视频图像的宽和高
Mat frame;
cap >> frame;
int height = frame.rows;
int width = frame.cols;
//规定视频文件名,编码方式,每秒帧数,视频大小
VideoWriter writeAVI = VideoWriter("1.avi",CV_FOURCC('D','I','V','X'),25,Size(width,height));
while(cap.isOpened())
{
cap >> frame;
namedWindow("摄像头采集");
imshow("摄像头采集",frame);
writeAVI << frame;
if(waitKey(20) >= 0)//延迟40ms,如果有按键则退出循环
break;
}
return 0;
}