I wouldn't waste time with IVTC. That ship sailed. It's not film anymore, or even close to it.
- Rip (DVD Decrypter
IFO mode, guides at this site)
- Restore color/noise if needed
- Crop/mask overscan and film edges
- QTGMC deinterlace
to x264 in MP4 container in Constant Quantize of about 16-18.
Samples need for specific problems (probably in their own threads), but that's basically it.