There's a package, Zoneminder, a open-source video surveillance software system. It allows you to describe an area of the image to alarm on, how long to record, to send a message. Some time back I set up a Raspberry Pi Cam, added it to Zoneminder and it just worked. I'm now trying to get a ESP32-CAM connected. Firefox 80 & 81 work just fine but not ZM.
I'd appreciate any help you can provide