How to assemble a huge screen on the wall?

Question

Arduino

It is necessary to assemble a screen of about 4 by 2 meters.
They suggested that it is possible to assemble from monitor matrices of the same size through the Arduino board.
Is it real and how?

Answer 1

This is called a "video wall" and I can't even imagine which side to stick Arduino here. Check out:
How to make a video wall for multiple monitors / TVs and one computer?

Answer 2

It is better to collect through a specialized controller.

Answer 3

It is possible through the video card on the PC. You need a special one with a lot of identical outputs, plus special software. The price of the issue with five, and sometimes six zeros.

Answer 4

It's real, Barco video walls. We have even more, 6x3 meters.