Anyone know anything about video hosting and 3rd-Party disclosures?

Greetings, fellow Bubblers! I’m creating a website where users will pay to upload videos and sell access to their customers. I’m planning to use a video hosting service (probably Mux) to host my user-uploaded content.

As I thought about it, though, I wondered if there are any “privacy” or “legality” requirements surrounding hosting user content on a third-party platform. I know a bunch of other Bubblers are creating similar apps, so have any of you ever found you need some kind of third-party disclosure to users uploading content that list the services used? If so, how did you work that into your Bubble app?