参数是rtsp的uri,进行实时播放视频。现在怎么做可以在这个里获取视频数据流

import cv2 
cap = cv2.VideoCapture("rtsp://admin:admin@192.168.2.64:554//Streaming/Channels/1")
ret,frame = cap.read()
while ret:
    ret,frame = cap.read()
    cv2.imshow("frame",frame)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break
cv2.destroyAllWindows()



用python导入rtsp协议 代码如下 一点反应都没有
![图片说明](https://img-ask.csdn.net/upload/201905/04/1556963510_175104.png)



如何导入成功

https://blog.csdn.net/yunge812/article/details/79709307