I don’t understand. Is this an experimental feature? How do you do this?

Glad I could help.

Create a template sensor that is the opposite value of the door sensor and include that one in your auto entities instead of the door one.

Awesome! Glad I could help.

I don’t fully understand why them having access to your home assistant is necessary. Do you want them to be able to create automations triggered from your data? If so, you could set up automations that send web hook calls to their instance which they can use to trigger automations. To make this easier since you both have UniFi you should be able to join the networks through a VPN. That way you don’t have to worry about the cloud service.

This may be a dumb question, but how did you get the image to appear while still being a link post?

I think the big challenge is the recommendation engine. If a service ever got popular enough to have a large set of videos there would be a need to discover them.