I want to squeeze 2.5 hours of captured video onto a single 4.3 GB DVD. I am willing to trade off video and audio quality for this. I fed my original DV stream in to iMovie and captured it as 15 9-minute segments. That is what I am trying to build and burn using DVD Studio Pro. How can I tell what audio protocol (and hence the storage requirement) was used? How can I cut back on audio quality? Before asking this question, I read and searched the 500 page DVD Studio manual. That suggested the bit rate could be adjusted to reduce video storage needs. I selected bitrate off the Preferences menu item (of all strange places!), and tried that with various values - 3.5, 3.1, 3.0. In all cases, a build followed by a burn said that my 4.7GB (4.3GB usable) DVD was not big enough, and the title bar in the DVD Studio Pro app still displayed a 6.3GB figure. Can anyone give me the steps to try? I am a novice at FInal Cut and Studio Pro, but expert otherwise. Thanks, Peter