Check your home player........you may not have to convert the MPEG file in to BUP/Vob files ( DVD compliant files ) in order to play the disc........re-encoding reduces the quality of the end product, so if you dont have to do it, dont....
Basically what im saying is, my pioneer plays everything, MPEG, Xvid, S/VCD's etc.... So i dont need to waste time converting all my files.