How to organize video surveillance in different cities?

Question

CCTV

There is a task to organize video surveillance in all offices of the office.
The offices are small - 1 room ~20-30 sq.m., i.e. one camera is enough for the office.
There is Internet - Wi-Fi and cable. There are resources for file storage. All offices are connected via openvpn to a central server.
Actually, what would you recommend, how to implement the task?

Answer 1

As I understand it, you want a server in the central office (for example), to see all the cameras and write everything for yourself?
Then write routes to all subnets, since everything is connected via openvpn, install software like trassir , add all cameras and look at your health.

Answer 2

If there are many offices, then you can grab this solution: erlyvideo.ru/watcher
And, in principle, do not worry about compatibility with IP cameras.