Unfortunately, you can’t!!! Well, not as far as I can tell, I’ve asked around and scoured the web but it seems there’s no use, there simply isn’t a way to do it on linux. The next best thing is to use DVDFab for windows via Wine (it kind of semi-officially works with Wine).
As I found nothing really solid on google, I thought I’d write this post as it’s annoying when you can’t find anything.
How infuriating! What a great way to encourage people to illegally download things instead of buying them. I wonder when (or if) these movie studios will ever learn that it’s a really dumb idea to stop people having total control over things they buy.