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Playing Video from WebCam with OpenCV and C++

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Playing Video from WebCam with OpenCV and C++

Cross platform video grabbing can sometimes be really painful. Another great thing about OpenCV is that it solves such problems for you with a couple of clean lines of code.

#include <iostream>
#include "opencv2/highgui/highgui.hpp"

using namespace std;
using namespace cv;

int main()
{
    VideoCapture cam(0);

    if (!cam.isOpened())
        return -1;

    cv::Mat frame;

    while (true)
    {
        cam.grab();
        cam.retrieve(frame);
        imshow("Cam:", frame);
        cv::waitKey(1);
    }

    return 0;
}

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