- Posts: 37
- Joined: Tue Apr 27, 2021 6:16 pm
- Real Name: Martín Calvi
The HDMI video inputs on the ATEM Mini only accept HD video signals up to 1080p60 resolution. So you cannot send a 4K video signal into those switchers.
There are some alternative video switchers from other manufacturers that support the kind of region-of-interest (ROI) cropping feature you describe to extract multiple HD angles from a single 4K video input. For example, the DataVideo KMU-200 is specifically designed for that kind of application, and I believe the
Roland V-600UHD has a feature along those lines as well. The Convergent Design Odyssey 7Q portable monitor/recorder also had a Titan Extract option that could do this, although I believe that product has since been discontinued (although you might be able to find used ones floating around).
Alternatively, you could use a software-based video switching approach like vMix or OBS Studio as these generally make it fairly easy to crop into a video source. In that case you would need a computer with a 4K capable capture card such as a DeckLink 4K or UltraStudio 4K device.