1 #include <opencv2/opencv.hpp>
 2 #include <iostream>
 3 using namespace cv;
 4 int main()
 5 {
 6     VideoCapture cap;
 7 
 8     cap.open("C://Users//john//Desktop//VID20211016121229.mp4");
 9 
10     if (!cap.isOpened())
11     {
12         std::cout << "不能打开视频文件" << std::endl;
13         return -1;
14     }
15 
16     double fps = cap.get(CAP_PROP_FPS);
17     std::cout << "fps" << fps << std::endl;
18     while (1)
19     {
20         cv::Mat frame;
21         bool rSucess = cap.read(frame);
22         if (!rSucess)
23         {
24             std::cout << "不能从视频文件中读取帧" << std::endl;
25             break;
26         }
27         else
28         {
29             cv::imshow("frame", frame);             
30         }
31         waitKey(0);
32 
33     }
34 }