So I'd like to have a video doorbell set up so that it communicates locally with my HA, raising an event when the button is pressed, allowing me to watch its audio and video stream live, and speak back to whoever is at the door. Ideally either from the browser or my phone, when I'm at home or not.

I don't care about motion sensing or AI or even NVR functions really. What software do I need? Should I bother going through the process of setting up Frigate or is there something simpler that would do the job?