12 projector output

ray

Hi all

Does anyone have any tips for running 12 or more projectors from one computer? I already have an rtx 4090 and an rtx 3070 installed but want to run at least 4 more projectors .

Thanks,

Ray

Skulpture

Get a datapath FX4 or similar. It takes a single 4k input and splits it into quads; then you get 4 individual FHD outputs.https://www.datapath.co.uk/dat...

CitizenJoe

I like the Blackmagic Decklink Quad (8 switchable in/out). It's under Capture and Playback, here: Products | Blackmagic Design

The one I have seems to have been replaced by a newer version, but I found it on eBay: Blackmagic Design BMDPCB143A DeckLink Quad PCIe SDI Capture Card | eBay

Cheers,

Hugh

Woland

@skulpture said:

Get a datapath FX4 or similar. It takes a single 4k input and splits it into quads; then you get 4 individual FHD outputs.https://www.datapath.co.uk/dat...

This would be my suggestion as well

Woland

@ray said:

I already have an rtx 4090 and an rtx 3070 installed

@DusX Could you please provide advice about working with multiple graphics cards on Windows?

I always forget if this is a no-no or something that's fine to do after some specific configuration.

Juriaan

I personally did up to 10, using a Blackmagic Decklink Quad (8 Outputs), and two HDMI ports (control monitor / additional monitor for the backstage crew)

With a RTX 4090, and a speedy CPU you should be able to push that to do a Blackmagic Decklink + a Datapath FX4.

ray

Thanks for all of your suggestions. The datapath looks great but is beyond my budget. Please excuse my lack of knowledge but what type of output ports does the Blackmagic Decklink have and can I use an adapter to change them to HDMI? As far as multiple graphic cards on windows goes, I just slapped them in and they worked. Dumb luck?

DusX

@ray

Dual graphics cards is unsupported (meaning we are unable to provide tech support) since we have no way to create the same/similar setup.

With that said you can use more than one card.
What is important is that you don't share/mix video from one output path to another.

So if you:

add a movie player, and connect its output to stage 1 (using gpu1)
add a movie player, and connect its output to stage 2 (using gpu2)

Don't try to mix the two videos together in any way.. keep them separate. Mixing will require moving the texture from one gpu to the other, and will be a spped/bottleneck.

No Isadora allows you to move video in anyway you like, so its very flexible. If you can keep the video flow simple, and maintain individual paths, you can make it work very well.

TEST, TEST, TEST!

Start simple, and build up.. test constantly