You can always save your projects for future editing with Nero. You can add, or take away video files at anytime as long as you don't go over 4.7GB for a standard DVD or 8.5GB for dual layer DVD.
thank you for the nero advise. right now i am using pinnacle studio plus, and cant keep my dvd disk open for furture additions, or mabe i am not seeing something. issue31
I'm not 100% sure what you mean about keeping your disc open, but DVD+/-R disc are write once only unless you use DVDRW which is re-writeable. In other words once you burn files to a DVD thats it, no other files can be added later to that DVD.