No, I'm quite certain the parent comment is correct. I'm only familiar with Florida's laws on the subject but I've personally had to deal with setting up interm

No, I'm quite certain the parent comment is correct. I'm only familiar with Florida's laws on the subject but I've personally had to deal with setting up intermittent audio recording in a "public" area (private business but not a room that anyone would think is "private") and state law was very clear that we had to make sure there was some reasonable signage to notify anyone entering the area that audio recording was being used. A sign indicating audio recording was taking place is directly comparable to the standard "This call is being recorded for quality assurance" that's ubiquitous on corporate call queues. That's reasonable enough for consent in the context of security cams. If someone wants to talk on your doorstep after seeing the notice that's reasonable enough, if you don't consent then don't go up to the camera and talk about some private subject.