imshow is returning lots of static like an old tv. Has anyone else seen this? [closed]

edit

//this shows my webcam stream with lots of noise. like an old tv set on the wrong channel. Please help.

#include "pch.h"


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

using namespace std;
using namespace cv;

int main(int argc, char** argv)
{
    VideoCapture cap;
    cap.open(0);
    if (!cap.isOpened())
    {
        printf("--(!)Error opening video capture\n");
        return -3;
    }


    Mat image;
    namedWindow("Image", WINDOW_AUTOSIZE);
    while (1)
    {
        cap.read(image);

        imshow("Image", image);
        waitKey(30);
    }


    return 0;
}
/////