I checked a while back, and there are at least a couple of smart video doorbells that can be made to work with a local IPTV system. I didn't end up doing it[0]

I checked a while back, and there are at least a couple of smart video doorbells that can be made to work with a local IPTV system. I didn't end up doing it[0], but it does seem possible. [0]- I wanted to monitor for deliveries, but COVID kind of trivialized that for a year.