I started looking at doorbells a month ago and was happy to see that Amcrest had come out with one since I've had good experience with their cameras. Unfortunately reading their answers on the Amazon page they said that it didn't work with ONVIF or RTSP, only their own Smart Home app. So I passed on that and went with the old Laview to get something working.
Now in a more recent answer they say that it is compatible with Blue IRIS and provided a link to a support article on setting it up with Blue IRIS. So it appears that they've updated their firmware to be ONVIF/RTSP compatible. Right now on Amazon it's $99 after a $20 Amazon coupon.
https://support.amcrest.com/hc/en-us/articles/360036590451-How-To-Setup-Amcrest-WiFi-Doorbell-In-Blue-Iris
Now in a more recent answer they say that it is compatible with Blue IRIS and provided a link to a support article on setting it up with Blue IRIS. So it appears that they've updated their firmware to be ONVIF/RTSP compatible. Right now on Amazon it's $99 after a $20 Amazon coupon.
https://support.amcrest.com/hc/en-us/articles/360036590451-How-To-Setup-Amcrest-WiFi-Doorbell-In-Blue-Iris
As an Amazon Associate IPCamTalk earns from qualifying purchases.