So,
I’m wanting to do a pretty big projection mapping project downtown. Thinking it through though, I understand the projectors will be at least 1000 feet apart, probably across a river…
It occurred to me that the vision I had, running HDMI cables to each projector from my powerhouse laptop, is no longer feasible…
How do we overcome this?
How can I have video controls on my laptop at one projector, but then feed half of the output to another projector way across the way to cover all angles of a building?
The usual way to handle signal transmission over distances longer than a couple dozen feet is fiber.
Gefen and Kramer are two of the usual suspects who provide DVI/HDMI to LC adapters. Over these types of distances you’ll probably want TAC-4 or something similar, as opposed to generic multimode orange sheathed strands.
If there is a staging/rental house involved in the PJ installation, I’d recommend letting them spec and provide this. If you need to add it to the rental, let them spec the complete fiber/adapter kit. You want to avoid being responsible for debugging a fiber run if possible.
Edit: also be mindful that the adapter pairs often provide well-meaning EDID forwarding features that might require some extra debugging.