How to show different pictures on 5 TVs?

Question

Network administration

There are 5 TVs 42ws50bs hanging in a row, each one has a flash drive with its own picture. This happens in a cafe, so the prices for products are shown.
The director wanted to be able to change pictures with a mouse click, and not constantly overwrite on a flash drive.
At first the idea of ​​​​5 hdmi came to mind, but I remembered that they have a network, but I don’t know exactly how to do it.
And an additional question, if everything worked out with the first one: In many cafes, the price boards are made of TVs, only different effects are applied there (pizza is spinning, or dishes change, there is smoke), how do these same cafes implement this?

Answer 1

Well, open a regular file with a picture over the network, the remote control can be switched to another one. Surely there is some kind of ftp / smb client on the TVs.
Or make a video from a picture with the same Windows Movie Maker, and launch a playlist on a TV set.
Or also run the video from the computer into the stream, and tune the TVs to it - you will change the stream itself on the computer.
In large offices, they order special software for TVs and the server part, which, however, implements the options described above more conveniently.

Answer 2

Or also launch the video from the computer into the stream, and tune the TVs to it - you will change the stream itself on the computer

And how specifically to do this with what program?