opencv读取视频

1.CommandLineParser类

 const char* args = {

        "{ m | useMouse  | true | how to choose object to track}"

        "{ v | videoName | color.avi | the video to track}"

        "{ t | featureType | 3 | 0 -- HUE 1 -- SATURATION_HUE 2 -- LBP_HUE 3 -- LBP_SATURATION_HUE}"

    };

    CommandLineParser parser(argc, argv, args);//代替命令行，可以直接运行，不需要输入参数了

    bool isUseMouse = parser.get<bool>("useMouse");

    Rect trackWindow;

    string videoName;

    if(isUseMouse)

        videoName = parser.get<string>("videoName");

    else

    {

        /*

         * read config parameters from file

         */

        string configFile = "config.yaml";

        readXML(configFile, videoName, trackWindow);

    }

在OPENCV中CommandLineParser parser(argc, argv, args)的使用可以代替命令行的输入，更为详细的解析在

opencv源码解析之(5)：CommandLineParser类的简单理解

2.视频的读取

 VideoCapture video;

    video.open(videoName);

    if(!video.isOpened()){

        cerr << "open " << videoName << " error" << endl;

        cerr << "current parameters : " << endl;

        parser.printParams();

        return -1;

    }

要用的的dll和lib库有：opencv_imgproc2410d.lib，opencv_video2410d.lib，opencv_core2410d.lib，opencv_highgui2410d.lib

一定要加入opencv_ffmpeg2410.dll