Final cut pro

[Eric Santiago]

Did you select it in the options?

[Jeremy Garchow]

You’ll need to turn “A/V Output” from the “Window” menu.

[Daniel Hirsh]

You may need to set up an external display in system settings> displays

[Jeremy Garchow]

Ran across this today with some AJA Devices and macOS 14.1. Had to do some Terminal commands, and then the connection was restored:

https://support.apple.com/en-us/108387

support.apple.com

If you can't use your camera or video output device after updating to macOS Sonoma 14.1 - Apple Support

Starting in macOS Sonoma 14.1, cameras and video output devices that don't use modern system extensions won't be available to use unless you restore the legacy settings.