Step one: don't.

No one needs that kind of literal brainrot. Video hosting/serving and editing on the fly are way too much for current Nostr infrastructure which is very non-performant at best. There's also the matter of paying for the costs of the hardware back end and bandwidth.

Just say no. Stop worrying about onboarding idiots who are more concerned with their dopamine hits than any sort of sanity let alone privacy. Don't make being stupid easy. Stupid should be hard.