1import cv2
2import os
3 
4RTSP_URL = 'rtsp://user:pass@192.168.0.189:554/h264Preview_01_main'
5 
6os.environ['OPENCV_FFMPEG_CAPTURE_OPTIONS'] = 'rtsp_transport;udp'
7 
8cap = cv2.VideoCapture(RTSP_URL, cv2.CAP_FFMPEG)
9 
10if not cap.isOpened():
11    print('Cannot open RTSP stream')
12    exit(-1)
13 
14while True:
15    _, frame = cap.read()
16    cv2.imshow('RTSP stream', frame)
17 
18    if cv2.waitKey(1) == 27:
19        break
20 
21cap.release()
22cv2.destroyAllWindows()
23