@gcluley Aqara. Can do 100% local storage and processing if you prefer. Works battery or wired in the same unit. (The local storage is in the indoor bell unit, not the camera itself, so even if someone rips it off the wall, you still have the video.)

Only problem I have with it is that the video is landscape orientation, which may not be the best for your setup. (For my front door, I really want a square or even portrait orientation. I have mine on my basement entrance where the wide view is "fine.")