I have to come back and say that I have managed to fully integrate this doorbell with Synology Surveillance Station.
Now I have two way audio properly set up, a cloudless doorbell and no delays! I guess I have to agree that despites all the issues, if you manage to configure it as local only, this is a great doorbell.
There might be some news in the future since they launched a new product:
Instead of using Blue Iris I am using Synology Surveillance Station. It has an option to add a new camera and then you can just choose AMCREST AD110 for automatic configurations. It works like a charm!
I don’t think 2-way audio in HA is possible. You can get 1-way audio using the custom WebRTC card but nothing more. That works, because the stream isn’t going via HA. HA merely provides the configured URL to the browser which then opens the stream directly.
Well I was looking for the same thing OP was, and there it was…just calling to me. Calling OPs post pointless when OPs post was the very first result when I was searching for help.
Has anyone noticed the sudden flurry of cheap (like sub GBP£30) video doorbells that have appeared on eBay in the past week or two? Anyone have any positive experience with any of these?