I know that CamSchnappr works with monitors, so my question is - is there a way to either use a Blackmagic Ddecklink output as a monitor output, or is there a way for CamShnappr to use a decklink? The end goal is to use a decklink as my CamSchnappr output.
Camschnappr has no concept of monitors - it just renders an output texture on a specified resolution. That texture can go anywhere. For your case just wire a Video Device.Out TOP to send it to your Decklink