I've been trying a 2-stage process: DVD-Shrink to extract the contents to a disk directory without video encoding, then
Handbrake to do the encoding to M4V (x.264) video, which is what an iTunes library expects. The nice thing about Handbrake is that it includes a command line processor and sensible presets, so I can basically use any Windows computer I find as a number-cruncher without any installation or fiddling around: plug in a USB key with the extracted files, run a short batch script, and off it goes.