brillb
n3wb
What exact Hikvision camera model number did you select for this "DB1" doorbell camera?One stream ... I get 2 using Hikvision.
Also, I have two of these doorbell cameras, actually with sequential serial numbers, and I can only get 1 of them to register as ONVIF in Synology. The other I've had to just use the RTSP URL rtsp://adminass@1.2.3.4:554/h264/ch01/main/av_stream - which means I'm doing server side motion detection rather than camera-side, which would lower the CPU usage if I could get camera-side. I can't figure out anything at all different between the two of them (literally one manufactured right after the other!).
I'll also mention that one of the two of them has significantly worse IR "glare" in the plastic lens housing than does the other one.