why video is not playing only one frame showing

edit

//PlayVideoFilecpp.sIn

//main.cpp

#include<opencv2\core\core.hpp>

#include<opencv2\highgui\highgui.hpp>

#include<opencv2\imgproc\imgproc.hpp>

#include<iostream>

#include<conio.h>          //it may be necessary to change or remove this line if not using windos
//////////////////

int main(void) {

    cv::VideoCapture capVideo;

    cv::Mat imgFrame;

    capVideo.open("768x576.avi");

    if (!capVideo.isOpened()) {

        std::cout << "\nerror reading video file" << std::endl << std::endl;

        _getch();


        return(0);
    }

    if (capVideo.get(CV_CAP_PROP_FRAME_COUNT) < 1) {

        std::cout << "\nerror:video file must have at least one frame";

        _getch();

        return(0);

    }

    capVideo.read(imgFrame);

    char chCheckForEscKey = 0;

    while (capVideo.isOpened() && chCheckForEscKey != 27) {

        cv::imshow("imgFrame", imgFrame);

        if ((capVideo.get(CV_CAP_PROP_POS_FRAMES) + 1) < capVideo.get(CV_CAP_PROP_FRAME_COUNT)) {


            capVideo.read(imgFrame);
        }
        else

        {


            std::cout << "end of video\n";

            break;
        }


        //chCheckForEscKey = cv::waitkey(1);
    }

    if (chCheckForEscKey != 27) {

        cv::waitKey(0);




    }
    return(0);
}

code is working okay but it only show frame why not playing whole video ?