Yeah I've wanted this for a while. I read somewhere today that you can actually convert an HDMI signal to UVC with the right USB adapter and view that video source on the iPad. Someone's already made an app to just view the UVC audio / video so you're not limited to using the FaceTime app. (
Join the Capture Pro: UVC Viewer beta - TestFlight - AppleApplehttps://testflight.apple.com › join)
(There's a reddit post about it but of course the iPad subreddit is doing the blackout protest... so I can't see what the dev said about it.)
I'm curious what the latency is like-- of course I want to use my iPad as a display to play Switch 😂