It's my understanding that the s2member team is working on this.
But in my opinion you can't protect web video.
Even if you put all the restrictions in place someone that wanted to take it could just screen capture and share.
And protecting can accidentally prevent your paying users from accessing.
Even big names like Russel Brunson host on YouTube private links.
Sure, paying customers can share the links, but you know ALL of your paying customers will have content delivered.
And the ones that steal just might need consulting someday so it's free advertising.