DVD to MPEG2 without Re-encoding

I needed to convert DVD to mpeg2 to re-author the video from our engagement ceremony. Somehow the authoring software I had, WinDVD Creator, doesn't process VOB files well, so I had to convert DVD back to mpeg2 first.

After a lot of searching, the followings are the steps I had to go through.

1. VobEdit [VOB to m2v]
- Open the first VOB.
- Demux
- Check "Demux all video streams"
*.m2v will be generated.

2. DGMPGDec (instead of DVD2AVI) [VOB to wav]
- Open all VOBs
- Select audio track (Audio -> Track Number)
- Audio -> Output Method -> Decode AC3 Track to WAV
- Audio -> 48 -> 44.1KHz -> Off
- Save Porject
*.d2v and *.wav will be generated.

3. TMPGEnc [wav to mp2]
- Select *.wav to the Autio Souce
- Check ES (Audio only)
- Load DVD (NTSC).mcf
- Start
*.mp2 will be generated.

4. TMPGEnc [m2v and mp2 to mpg]
- File -> MPEG Tools -> Simple Multiplex
- Type -> MPEG-2 Program (VBR)
- m2v to Video input
- mp2 to Audio input
- Run
*.mpg will be generated.

References
- http://www.digital-digest.com
- http://members.ld.infoseek.co.jp/hp_yamakatsu (in Japanese)