python+opencv 打开网络摄像头

# -*- coding: utf-8 -*-
"""
Created on Thu Nov 22 18:41:33 2018
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@author: Administrator
"""
#以下是最常用的读取视频流的方法
import cv2
url = 'rtsp://admin:[email protected]:554/'#根据摄像头设置IP及rtsp端口
cap = cv2.VideoCapture(url)#读取视频流
while(cap.isOpened()):
    # Capture frame-by-frame  
    ret, frame = cap.read()
    # Display the resulting frame  
    cv2.imshow('frame',frame)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break
# When everything done, release the capture  
cap.release()
cv2.destroyAllWindows()