There's no answer to this question, since movies are generally shot on film with analog sound. The newest standard for telecine transfers is called "4K". That would translate to 4096x4096 resolution. You can do the math, figuring 24 frames per second and then adding the audio stream(s). I come up with something in excess of 50MB per second. That's 175GB per hour minimum, and probably some more.
HD video, at 1920x1080 is obviously considerably less. Probably on the order of 6 MB/sec (not bits). Something like 20GB per hour, plus audio.
Math is not my strong suit, all those numbers could be way off.