OpenCV2从摄像头获取帧并写入视频文件的方法

#include<opencv2\highgui\highgui.hpp>
#include<opencv2\imgproc\imgproc.hpp>
#include<opencv2\core\core.hpp>

int main()
{
 //打开摄像头
 cv::VideoCapture captrue(0);
 //视频写入对象
 cv::VideoWriter write;
 //写入视频文件名
 std::string outFlie = "D:/1.avi";
 //获得帧的宽高
 int w = static_cast<int>(captrue.get(CV_CAP_PROP_FRAME_WIDTH));
 int h = static_cast<int>(captrue.get(CV_CAP_PROP_FRAME_HEIGHT));
 cv::Size S(w, h);
 //获得帧率
 double r = captrue.get(CV_CAP_PROP_FPS);
 //打开视频文件，准备写入
 write.open(outFlie, -1, r, S, true);

 //打开失败
 if (!captrue.isOpened())
 {
  return 1;
 }
 bool stop = false;
 cv::Mat frame;
 //循环
 while (!stop)
 {
  //读取帧
  if (!captrue.read(frame))
   break;
  cv::imshow("Video", frame);
  //写入文件
  write.write(frame);
  if (cv::waitKey(10) > 0)
  {
   stop = true;
  }
 }
 //释放对象
 captrue.release();
 write.release();
}