text: import cv2
  
  def main():
  
      cap = cv2.VideoCapture(-1)
  
      # Check if the webcam is opened correctly
      if not cap.isOpened():
          raise IOError("Cannot open webcam")
  
      while True:
          ret, frame = cap.read()
          frame = cv2.resize(frame, None, fx=0.5, fy=0.5, interpolation=cv2.INTER_AREA)
          cv2.imshow('Input', frame)
  
          c = cv2.waitKey(1)
          if c == 27:
              break
  
      cap.release()
      cv2.destroyAllWindows()
  
  
  
  if __name__ == '__main__':
      main()