Sorry, I'm not going to answer your question, but I'm going to offer a frame challenge which, I think, is really necessary (and too shortlong for a comment).
I understand your willingness to offer lively and engaging lectures, offering an interactive experience as close as possible to the real thing—it's certainly my desire too—but don't. For the following reasons:
- Network bandwidth: Your student may not be the only person in the house that needs to use an internet connection at that time. They might not leavelive alone and have siblings or house mates that attend lectures too, and they might have parents or other resident relatives that are teleworking. What if everyone needs to transmit and receive videos at the same time? Are you really sure that your lectures are more important than their siblings' or one of the parent's presentation to their boss?
- Family and house mates life: While you're lecturing, the other members of the family or house mates have the right to go on with their lives. Take a shower, cook, listen to music, whatever. And your student may not even have a room just for themselves (don't assume that all your students are wealthy enough to have such a luxury!). Don't impose your restrictions to all family and house members! If one of the students is watching your lecture from the living room, should everyone in the house stay sit and silent? In one of my lectures in which I used Webex, I accidentally forgot to unmute participants on entry. You could hear music, kitchen noises, children playing and so on. Should all other house members (family, house mates, whatever) stop their lives just because you're teaching? What if every professor demands this?
- Law: Probably not all your students live in your same jurisdiction or even country. Trying to write a waiver that works for all your students, wherever they are, can be a daunting task. I wouldn't even think of administering a waiver suggested by random folks on the internet without the legal advice of the university lawyers.
The above are just the main issues of your approach, but I'm sure I can find others too. So, let me repeat: rethink your expectations, accept a less lively interaction (e.g. I use a Telegram chat to receive student's questions and their videos are turned off), and don't.