Can I take vob files from a ripped dvd and use those in DvD Lab? Or will I have to encode those with something first?

I usually use smartripper to rip the dvd and then use dvd2avi, then tmpgenc to encode and then burn. Just wondered if I can cut any of those steps out?

Also, will MainConcepts Mpeg encoder encode those .d2v files from the program dvd2avi?

Thanks!
DarkCyber