What is the best way to convert .vob files copied directly from a DVD into a format usable by Premiere Pro?
Using ffmpeg, cat and remux all the VOBs together to a MPEG program stream.

ffmpeg -i "concat:vts01_1.vob|vts01_2.vob|vts01_3.vob" -c copy -f dvd dvd.mpg


(You may have to escape the | character i.e. vts01_1.vob\|vts01_2.vob\|vts01_3.vob)