Before reading the tutorial, you may think the process of duplicating a DVD is complicated, but actually, it can be easily achieved with a DVD duplication software. WonderFox DVD Ripper Pro is such a useful assister that can analyze and copy any home-made DVDs and recorded DVDs. Even if you need to duplicate those copy protected DVDs, DVD Ripper Pro can finish the process without hassle. Now follow the guide to learn how to duplicate a DVD in three steps.