DVD-RW burn fail help!!!

[MrPacman]

Hi.. I'm new to this forum but just got my first DVD burner NuTech DDW-082. I am trying to back up some old movies onto a DVD-RW using DVD-decrypter, DVD shrink, and Nero 6.0. But no matter what I do I always get "failed burn speed" message even burning at 1x. I can burn data/audio CD perfectly at max speed. Is it the media (trying to burn onto Emtec DVD-RW) or something else? Thank you in advance for all your help.