Short answer – no, you can’t do that without a glass master and disc replication.
In truth, you are wasting your time trying to prevent people from copying your DVDs.
Hollywood has a huge financial incentive to prevent copying, yet every time a new protection scheme is developed, savvy computer guys figure out how to break the protection. They often do this within days of the scheme first appearing on disc.
I suppose that some copy protection can prevent casual copying by users who decide it’s not worth the trouble when they first find out that they can’t just copy the DVD files to their hard drive. But anyone with even an ounce of determination will find tools that will break whatever protection scheme is in use.
If I were you, I’d save my money for other facets of my business. I don’t think copy protection represents a significant chunk of a Hollywood movie’s budget, but it sure does represent a significant investment in my business (and probably yours).
-Jeff
The Focal Easy Guide to Adobe Encore DVD 2.0