How to show stream from IP camera on web page (there can be a lot of cameras)?

Question

Video broadcast

Good afternoon.

Tell me with what you can use to broadcast a stream from IP cameras on a web page?
Introductory:
- I do not want to send a stream to external services;
- camera installation points are not connected (i.e. this is either some kind of light tunneling, or vpn, or something else)
- there can be many cameras (a more or less convenient mechanism for connecting new ones is needed);
- each camera can be viewed by many users (i.e., ideally, some kind of multicast);
- authorization is required (i.e., knowing the address of the camera stream, it should not be possible to view it without authorization on the site);
- the site itself is made on .Net Core.

Thank you.

Answer 1

You need a media server, for example https://www.wowza.com/
The camera, theoretically, can stream via RTSP, but it is unlikely to pull the load from even several clients.

Answer 2

Take RTSP from the camera. Next, you issue this stream to the site through the player. Authorization on the site and so on - these are questions for the site programmer. If the cameras do not have external IP - then drive through the VPN, tk. infa is not important, you can use any of the fastest options. (but here the whole stream will have to be processed by your server)
Either - you give the stream from the cameras or to the streaming resource. Then the whole flow will go through the service