The RTSP URL is the following:
rtsp://x:y@z.z.z.z:554/STREAM
where:
x is the username and y is the password that need to be set if the camera has an account set (from the Tapo Application Advanced Settings→Camera Account),z.z.z.z is the IP address of the camera, and,STREAM is either stream1 for the high-quality stream or stream2 for the low quality stream offered by the camera