I have to do a translation of the words of a DVD, and then add subtitles to that DVD (iso file or folder).
This is a professional work and it has to be clean (no change in quality, ie no "rip"...).
How can I add subtitles to a DVD (file) on a Mac (snow leopard)?
- wysiwyg: being able to view the DVD / stop it to add the subtitle, set the duration easily
- if possibly, set the font, size and position of subtitles
- (if possibly, even add subtitles to the DVD Menu)
Is there already an App on the Mac that does that and just need a download? Or a 3rd party software is required?

