The last RTSP update for the v2/pans (early this year) improved things a lot and it's now quite useable.
First, can't be done stock.
Second, even with the RTSP firmware installed you can't do that directly with the RTSP stream and will need to convert it to an mjpeg one. There are android apps (tinycam) or raspberry pi (motioneye) that can do the conversion. Some threads that might be helpful:
Wyze Tinycam Video URL on Dashboard??
Putting live video from (almost) any webcam/ip camera into your dashboard?
