I have a 26 minute piece that was shot with a Sony HVR-Z1U camera in HDV 1080i letterbox format.(960 x 480 pixels) I am working with Avid 5.6 on a PC.  The master is clean !!  I am trying to make quick time movie in DVD format.. Have tried several Codecs but cannot get a crisp transfer to Quicktime Movie Pro, and evan worse transfer to DVDit.   What is best way to get good transfer so I can burn a clean disc for my presentation?