During the discussion with Larry Jordan and Michael Horton, I posit that QuickTime X, like OS X before it, is a complex transition that necessarily takes many iterations to complete.
OS X 10.1 was missing even the most basic OS 9 features, but progressively we got all that was missing, and much, much more. QuickTime X is like that: we’ve got the basics of linear playback now and more will come over time as they rebuild/rewrite and refactor media creation and playback on OS X.
The interview’s only six minutes.