Time to see how this works with my Whisparr library
I know it’s not quite what you asked. But if you have a little DIY ability you could build a good UPS out of a 100ah LiFePO4 battery and inverter. I’ve seen a few youtube builds where the runtime beats out what you can get out of a regular UPS. And with less maintenance.
The metadata structure and scrapers are all aimed at adult video. Although technically you can make your own, so maybe it could work for other things.