How to live stream 4 cameras to a flat screen TV I wanted to live stream different views from 4 cameras at the same time on a flat screen TV or monitor. What materials would I need for such a project. I have seen home security surveillance setups in which 4 cameras are streamed live to a monitor, however two things that are very important to this project are:

1.) live stream quality

2.) monitor size (need ~50inch display)

3.) placement of stream views on display

If there are surveillance packages that accomplish these goals (especially flexible positioning of the 4 live stream views), feel free to point me to them. Also, I am new to this website so If this question is not a good fit for this thread, then where would it be a good fit? Thanks in advance.
You need something like the Blackmagic Multiview: https://www.blackmagicdesign.com/products/multiview or Matrox Quad-Split http://www.matrox.com/video/en/products/microquad/ or Decimator MD-QUAD http://decimator.com/Products/MultiViewers/MD-QUAD%20Quad-Split%20MultiViewer/MD_Quad.html

These units take HD-SDI input and can then display it on a HDMI (or SDI) display however you like.

So grab as many cameras as you need - you can decide what quality camera suits your needs. Get cameras with with SDI output for long cable runs. If they don't have SDI, you can get HDMI to SDI converters. If an SDI cable isn't long enough, you can get SDI/HDMI to Fibre converters that let you run fibre optic cable between your cameras and a multiview. 

Any half decent multiview will let you use a computer to re-arrange the placement of the images on the screen.

Good luck!