Opencv 简单视频播放器

// 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;
}