http://10.5.5.9/gp/gpControl/execute?p1=gpStream&a1=proto_v2&c1=restart

udp://10.5.5.9:8554

cap = cv2.VideoCapture("udp://:8554", cv2.CAP_FFMPEG)
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
last_message = time.time()

while some_condition():

    # Get an image
    ret, img = cap.read()

    # Do something with img
    cv2.imshow("My Window", img)
    cv2.waitKey(1)

    # Keep alive.
    current_time = time.time()
    if current_time - last_message >= keep_alive_period/1000:
        logger.info("Sending keep alive message to %s.", self.host)
        sock.sendto(message, ("10.5.5.9", 8554))
        last_message = current_time

cv2.destroyWindow(window_name)
cap.release()