這是我在國外網站看到的

1. Rip the main movie on HD.
2. Demux all streams from the ripped movie (m2v, ac3's, and sup's files) with Vobedit.
3. Use Srt2Sup to obtain the necessary sup file from your srt subtitle (the srt file that U have must be syncronized with the movie).
4. Use IfoEdit in DVD authoring mode to remux everything back (including your sup file).
5. Do not forget to paste the color map from the original ifo into the new ifo.
6. U can burn your new movie on a blank DVD. If U want to preserve all the other features from the original DVD just copy everything into the VIDEO_TS folder (excluding the main movie files) and burn that folder on DVD.
All the necessary software is freeware.
!!! Of couse is not that easy as I decribed above, but theese are the main steps.

他們是用 vobedit demux 成 m2v 的
可以拿另一片字幕顏色正常的 DVD 再把它的字幕 color copy 過來
我沒試過, 你試試看吧