How does this card use AlexxIT/WebRTC

[Cronvs]

How does this resource use AlexxIT/WebRTC for live view without the go2rtc addon?
I tried using AlexxIT/WebRTC without go2rtc which fails spectacularly, but it seem to work using this lovelace card, despite go2rtc not being installed. How?
I want to bring down the CPU usage as much as possible so I want to understand the implementation here.

[dermotduffy]

You can optionally use the card with AlexxIT/WebRTC as the live provider, but it's not doing anything special -- in that mode the live stream offers no particular capabilities that AlexxIT/WebRTC doesn't offer on its own, i.e. if it doesn't work with AlexxIT/WebRTC directly, it also won't work via this card. I would guess you have not configured this card to actually use AlexxIT/WebRTC, and so you're just getting the default card behavior -- which works for you (but doesn't use AlexxIT/WebRTC).

Please share your config if you think that's not the case.

[Cronvs]

To clarify, I do not use Home Assistant addon for frigate. I have installed it on network. So using the frigate camera entity only seems to work if I then also install the go2rtc addon on Home assistant (restreaming frigate stream that is) but with this card it seems to work without it. I am assuming after digging through some nginx configuration that this card actually fetches the go2rtc stream from the frigate published(?) endpoints for frigate's go2rtc installation.

This is my config:

type: custom:advanced-camera-card
cameras:
  - camera_entity: camera.outdoor
    live_provider: webrtc-card
    dimensions:
      layout:
        zoom: 3
    webrtc_card:
      entity: camera.outdoor

Also I'm not sure what the differences are between just having live_provider: webrtc-card and adding the webrtc_card line.

[dermotduffy]

this card actually fetches the go2rtc stream from the frigate published(?) endpoints for frigate's go2rtc installation.

If you use the go2rtc live provider (which your config is NOT doing), with a Frigate camera entity, then yes, it connects to the Frigate go2rtc server proxied via the Frigate integration that the user installs.

However, your configuration is asking THIS card, to render AlexxIT/WebRTC card internally. It is not doing anything you could not do with just AlexxIT/WebRTC configured in the right way.

Also I'm not sure what the differences are between just having live_provider: webrtc-card and adding the webrtc_card line.

The former tells THIS card to use AlexxIT/WebRTC as the live rendered/provider. The latter are entirely optional arguments you may or may not want to pass to the AlexxIT/WebRTC card.