Download DVD

Video on DVD is in a compressed format. You need software that will uncompress it.

Here is how I do it, with no quality loss that I can see. (And I'm picky.)

Use Cinematize 2, I use it with iMovie 06 (and a few times with iMovie 11) and iDVD 11. It has several modes of converting the data. One mode is called "lossless".

http://www.amazon.com/Miraizon-10121201-Cinematize-2-Mac/dp/B0006AAO96/ref=cm_cr _pr_pb_t

I would use iMovie 06 with iDVD 09 - 11, why?

iMovie 09/11 uses 'single field processing' meaning every other horizontal line of the video is thrown out, which reduces the sharpness of the footage. iMovie 06 uses ALL of the image to form the video.

Cinematize 2 + iMovie 06 + iDVD 09/11 works great for me.

What format is that DVD? if it disk image, just download and mount it and play with DVD player. If it several VIDEO_ST and SOUND_ST in a folder, just download whole that folder and play it with DVD player.