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Time is the big problem here as is CPU power. Ripping a complete DVD to a .vob then to a MPEG 4 takes a cnsiderable amount of time. With my system, I can get it done in about 8 hours using a T-Bird 1G (oc'ed to 1.4) and 512M of RAM. If you've got anything below a 800Meg Duron, forget about it -- it's going to take all day if not two days of your CPU running at 100%. Celeron owners should forget about it altogether -- Both MPEG 2 and MPEG 4 need more beef than those CPU's can offer.
Once you've got the DVD ripped to a .vob file, it has to be re-encoded to MPEG 4 -- this is another 4-6 hour job on my system. At that point, you can start editing the MPEG 4 file -- higher end video editors like Premiere, Vegas and Media Studio can handle MPEG layer 4 with little problem. Although the shear size of the file makes editing a very long process until you've got the edits down ot managable sizes.
The question is, do you want to go to that extent to get one or two scenes from a DVD? Another new twist is recent copy protection encriptions have been damn good on DVD's -- making the ripping process considerably longer than it took even 4 months ago.
-Craig
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