What is the best way to organize video surveillance for an apartment?

Question

CCTV

My apartment is currently under renovation and I want to put a couple of cameras in front of the entrance to the apartment, plus an intercom with a camera call. I didn’t manage to google any sensible articles on this case, although I once saw such articles on Habré. It's interesting to hear suggestions from people, or at least links to good articles on this topic.
As I understand it, the most rational is to buy IP cameras, not analog ones. Where would be the best place to connect them? To the home local grid and further with one or another software on a server, record the stream. Or would it be better to put a specialized DVR? And what to do with the intercom? I know that they can write to an internal SD card, but there are those that would write to a home server or the same DVR.
And I'm also interested in food for cameras. As I understand it, it is necessary to bring 12 Volts to them, and not 220. Where is it better to stuff the converter?

Answer 1

Search the Videon.spb forum
The most vibrant place.
IP cameras are easier to install and connect, but more difficult to set up. It is best to buy a DVR - it has been worked out for functioning 24/7, it is more reliable.
There are also working solutions for IP intercoms, they write videos or frames both on the card and on the DVR, or rather, the call panel with the camera is connected to the DVR.
They wrote about POE, ideally you can bring one twisted pair to each camera.

Answer 2

Easier and more reliable registrar. IP cameras are more expensive, they are connected with an ordinary twisted pair cable, you can power it from a separate power supply unit, POE switch or POE-powered registrar. Analog cameras are now high-resolution 1-2 megapixels, connected via the same twisted cable through converters or coaxial, powered by a separate power supply unit located next to the registrar, cheaper than IP by 2-3 times. Intercoms also have IP, but judging by the forums, people are not particularly enthusiastic about them. An intercom with an analog video output can, in principle, be connected to a registrar.