It could possibly be down to the way it's burning, but it could also be either the software your using and the media.
Please let us know your DVD writer, software your using that the type of blank DVD and we'll see if we can sort it out for you
P.S. you say that you have now lost all control, does that mean you did have control previously? Have you done something to change this (i.e. installed or updated any software, re-flashed the firmware etc)