How to use a URL as input in OpenCV

edit

My project consists on making some operations on a streaming video in real time thanks to OpenCV using the video URL. I chose to change the color of the video(or its resolution, 2 easy codes) it worked perfectly when I generated a streaming video from my laptop camera. but when I put the URL as an input it didn't. here what the 2 URLs I am using look like

http://192.168.137.191:5000/feed1

http://192.168.137.191:5000/stream.html

and here is my code

import cv2

import numpy as np

cap = cv2.VideoCapture('http://192.168.137.191:5000/feed1')

while True:

ret, frame=cap.read()

gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

cv2.imshow('gray',gray)

if cv2.waitKey(1) & 0xFF == ord('q'):

  break

 cap.release()

 cv2.destroyAllWindows