I want to be able to put two projectors next to each other and then match them up next 2 each other to make one really wide screen but how do i split the video across it. I would like to do it on a mac. Is there a software program that can do this.
The easiest way is to get a graphics card that has two ports on it. I know that works on PCs, but i dont know about Mac. I am thinking that you can do the same thing on a Mac. If you do a thread search you will find a few thread that talk about the same thing, mostly.
A media server like a Hippotizer will do this, but probably too expensive for your needs. They blend the image in the middle so the projectors overlap slightly and merge into one; instead of two sharp edges that you have to align.
I am not a 100% sure if this will work, but it is worth checking out. It costs $290. If you use a single computer's VGA output and the double image strecher (one output to each projector), you may be able to accomplish your goal.
You either want an NVIDIA video card or a dual head to go.... either way you will either want to run this off a laptop so you still have a screen or a dual head video card plus the splitter. You WILL have a line where the projectors meet, this does nothing to get rid of that. Media servers will take care of that/do the blending for you.