How to prevent uploading restricted video on site?

I want to prevent uploading of restricted vi开发者_如何学Pythondeo(like porn video ) on my site .

So is that possible to restrict user's to prevent uploading of this type of video ?

What would be the solution for this problem ?

An auditor and an approval process. Yes, you need to watch the entire thing.

To be honest, if you're asking this, you don't want to do this. You're not ready for anything of volume at least.