Hello. I have the 20th Anniversary Edition of a film, on DVD. Also, I have the "regular" / earlier edition of the same film, also on DVD. What I would like to do is take the Italian subtitles, which are not on the Anniversary Edition, and add them to it. First: What do I need, to take the subtitles from one DVD? Second: What do I need, to add those subtitles to (a copy of) another DVD? I would like to leave the DVD, to which I am adding the subtitles, to remain visibly untouched (menu structure, extras, etc). Does that mean acting in a different manner, to adding them and not needing things to remain the same? If so, how? It's just subtitles for the main feature that I am concerned with. Thanks!