Assertion failed (size.width>0 && size.height>0)

Question

I\'m using Visual Studio Express 2013 with OpenCV 2.4.7, following this tutorial.

I have spent hours searching the web for solutions, including all of t

Answer 1

Do this:

VideoCapture cap;
cap.set(CV_CAP_PROP_FRAME_WIDTH, 640);
cap.set(CV_CAP_PROP_FRAME_HEIGHT, 480);
int camOpen = cap.open(CV_CAP_ANY);

Or you can try changing this:

while (true) {
        cap >> image;

        imshow("window", image);

    // delay 33ms
    waitKey(33);        
    }

to

try
{
     cap >> image;
     imshow("window", image);
     waitKey(33); 
}
catch (Exception& e)
{
    const char* err_msg = e.what();
    std::cout << "exception caught: imshow:\n" << err_msg << std::endl;
}