I have a classroom and I want to project videos onto 3 out of 4 walls. I know that I probably need 3 projectors, a powerful machine to control them and some sort of software to manipulate the image. I want to be able to show a video stretched out on all 3 walls without distorting the original image but at the same time sometimes put something different on each of the walls (image on one, video on the second and text on the third). What do you reckon is the cheapest way to do that? What do I need to be able to do that?
Any help will be much appreciated.