Pretty sure both of those are not instant unloads and have to be actively opened to force uploads outside of some normal schedule. If that’s true, that won’t work here.

I have the nvr setup with Synology and the vpn is there too, automated to connect when my phone leaves the wifi. This might be an option, but I’m on iOS so there’s limitations there.

If I had to bet, this is probably going to be the best answer. Dependable uploading, no vpn or homelabing, and replicated storage.

That can record from your phone’s camera and immediately stream it back home over vpn? If so perfect