Python OpenCV - Webcam capture returns blank screen

Question

Im using pycharm to run the following code.But Im getting a black screen with no output. cv2 version - 4.0.0 (intall by pycharm installer) Python - 3.6 windows 10 64bit

   import cv2

   print(cv2.__version__)
   video_capture = cv2.VideoCapture(0)


   while (video_capture.isOpened()):
      ret, frame = video_capture.read()
      if ret == True:
        cv2.imshow('win', frame)
        if cv2.waitKey(1) & 0xFF == ord('q'):
            break
      print(frame)

I just printed the frame and I got following output with lot of zeros. Note that I have used the same webcam in same machine with Opencv and Java and it works fine.

[[[ 80   1   9]
  [114 120   1]
  [  0   0 176]
  ...
  [  0   0   0]
  [  0   0   0]
  [  0   0   0]]

Please see the blank output screenshot hear

Answer 1

Found the issues, It was my Kaspersky Virus scanner which was blocking it. This is really strange since it light up the Webcam so I never thought it was blocked. Once I disabled virus scanner it worked like a charm