How to work RTSP in python

you don't need wrappers for ffmpeg, you can just execute commands directly from python

import os
os.system("ffmpeg -i rtsp://192.168.1.100/stream -codec copy -f h264 output.mp4 -codec copy -f mpegts udp://127.0.0.1:3000 &")

this captures an rtsp stream from 192.168.1.100/stream (replace this with your camera IP and streaming url, this would be in the camera settings probably on the camera site at 192.168.1.100), outputs it to an mp4 file and re-streams it to a local udp port 3000

need more information to know exactly what you're looking for

Here's a way to capture a single frame from an RTSP stream and save it to disk. You could modify this to save a video stream as well if you wanted:

import ffmpeg

stream = ffmpeg.input("rtsp://<IP or host>:554/", ss=0)
file = stream.output("test.png", vframes=1)
testfile = file.run(capture_stdout=True, capture_stderr=True)