Soldato
Thanks I'll give that a try later@jonneymendoza It is asking for the camera ONVIF server URL (basically the http web address to the cameras stream). You can find it fairly easily by going to the Web2RTC interface, which is: http://192.168.0.19:1984/ (obviously swap my internal IP for yours).
Click "add"
Then create the URL for your camera - for my doorbell for example it is:
onvif://camera:[email protected]
Where "camera" and "camera22" are my username and password setup in the Reolink app (Select your camera -> Cog icon -> Advanced -> User Mgmt).
Paste that URL under "ONVIF" on the Add tab of Web2RTC and it'll resolve to a stream URL.
On your dashboard then add the URL that the Web2RTC app shows you from above:
type: custom:webrtc-camera
url: onvif://camera:[email protected]?subtype=000