from cv2 import cv2 as cv2
import time

def get_frame():
    url = "rtsp://admin:LINDE123456@169.254.139.34/Streaming/Channels/2"
    cap = cv2.VideoCapture(url)
    ret, frame = cap.read()

    cv2.imwrite("frame.jpg",frame)
    cv2.destroyAllWindows()
    cap.release()

if __name__ == '__main__':
    str1 = input("输入要延时的时间，单位秒:")
    time1 = int(str1)
    while True:
        time.sleep(time1)
        get_frame()