How to view video stream in OpenCV2 python

Question

I\'m starting to play with Opencv. I am using the python bindings for opencv2 on Linux. I wrote a quick test program but it seems to hang indefinitely.

impor         


        

Answer 1

Code safely and test the return of the method:

vid = cv2.VideoCapture(weblink)
if not vid:
    print("!!! Failed VideoCapture: invalid parameter!")

The address you are using is probably not supported by OpenCV.

The same practice should be used whenever a method can fail:

while (key < 0):
    success, img = vid.read()
    if not img:
        print("!!! Failed vid.read()")
        break

    cv2.imshow("video", img)