Opencv 简单视频播放器

最近看了一下[1]_2011_OpenCV 2 Computer Vision Application Programming Cookbook.pdf，写了一个利用Opencv库实现的简单视频播放器。源码如下所示，英文注释大家应该可以看懂的。O(∩_∩)O~

// C++ header and namespace
#include <iostream>
#include <string>
#include <cstdlib>
using namespace std;

// Opencv header and namespace
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/video/video.hpp>
using namespace cv;

bool JumpToFrame(false);

int main(int argc, char* argv[])
{  
  //!< Check out Input video
  if (argc != 2)
  {
    cerr << "Usage: VideoPlayer.exe VideoFilename." << endl;
    exit(1);
  }

  //!< Check out Open Video
  VideoCapture capture(argv[1]);
  if (!capture.isOpened())
  {
    return 1;
  }

#pragma region InfoOfVideo
  
  long    NumberOfFrame = static_cast<long>(capture.get(CV_CAP_PROP_FRAME_COUNT));
  double  HeightOfFrame = capture.get(CV_CAP_PROP_FRAME_HEIGHT);
  double  WidthOfFrame  = capture.get(CV_CAP_PROP_FRAME_WIDTH);
  double  FpsOfVideo    = capture.get(CV_CAP_PROP_FPS);  
  
  cout << "The name of the input video is " << argv[1] << "." << endl;
  cout << "NumberOfFrame : " << NumberOfFrame << endl;
  cout << "HeightOfFrame : " << HeightOfFrame << endl;
  cout << "WidthOfFrame  : " << WidthOfFrame << endl;
  cout << "FpsOfVieo     : " << FpsOfVideo << endl;

#pragma endregion

  // !< JumpToFrame function
  while (JumpToFrame)
  {
    double Position = 0.0;
    cout << "Please input the number of frame which you want jump to!" << endl;
    cin >> Position;
    capture.set(CV_CAP_PROP_POS_FRAMES, Position);
  }

  // !< Delay between each frame in ms corresponds to video frame rate(fps)
  Mat frame;
  bool stop(false);
  int delay = 1000 / FpsOfVideo;
  namedWindow("Extracted Frame");

  while (!stop)
  {
    //read next frame if any
    if (!capture.read(frame))
    {
      break;
    }
    imshow("Extracted Frame", frame);
    //introduce a delay or press key to stop
    if (waitKey(delay) >= 0)
    {
      stop = true;
    }
  }

  // !< Close the video file.
  // Not required since called by destructor
  capture.release();

  return 0;
}