Not OP, but I've been looking for something like this. I've got a couple of refrigerators and a deep freeze I'd like to monitor. I'm not looking for a cooking tool that constantly sends updates. For that I'd like to use a multi-probe Bluetooth device. I've got Zigbee for other sensors, and I'd like to add these to the net
synestine
Unpopular opinion from what I've seen in this forum, but for me it is Nextcloud followed by Jellyfin.
I use Nextcloud setup fory whole family, about a dozen all together. I even sprang for the DavX5 plugin for several people so we can share calendars and contacts as well as files and notes. We backup photos from our phones using the Nextcloud app. Several of us use it as a backend for KeePass.
We use Jellyfin for streaming; movies, tv, music videos and music. It is the backend storage and library organizer for four Kodi boxes, five browsers, several phones and tablets and a couple of Roku's. It works like a champ, even with the occasional library re-sync.
We have about the simplest/cheapest mechanical chimes you can get. (2 total, one on each floor).
Add "Older than dirt" and that's what I have too. House was built in the late 70s.
Did your Reolink doorbell come with a little battery-looking-device that you had to wire into the mechanical chimes?
How long have you had yours in service? And what model is it, if I might ask.
That is effectively what I had with my EZVIZ doorbell-cam. The image quality was actually really good compared to my basic cameras (2k, 180-degree FoV, daylight and infrared modes). The reason I went this way is that it's damn near impossible to run any sort of wires to the front porch location (Very long story, involving bore-scopes, drills, failure and drywall repairs) which is why I went this way, even with some people being weirded out by the camera on the doorbell.
I may have to go this route if I can't find a doorbell-cam that doesn't suck and is still available for purchase, but that will take months and several tests of the WAF (Wife Acceptance Factor).
Look into ffmpeg's "concat" feature. It can do what you want. https://trac.ffmpeg.org/wiki/Concatenate