1TB per movie (Score 1)

The movie stored on the disk will be heavily compressed. Each frame will have been de-compressed for display, so assuming a 32bit colour-depth and a 1920x1080 screen, each frame would take up about 6MB. At 24 frames a second a two-hour movie would take up about 1TB of space. Before it could be distributed, the 1TB would have to be authored to identify key-frames and so on. Very time consuming.