What are the differences between Blu-ray and HD-DVD discs?
Capacity is the primary distinction between Blu-ray and HD-DVD discs: Blu-ray discs hold far more data that, in theory, would allow studios to pack far more features on a single disc. HD-DVD capacity, while more than adequate to present films of average length, would be stressed on longer action-packed epics. Both films play back video and audio signals that conform to the same technical specifications, so distinctions in performance between the two would be minimal, at least in theory.
