Cyberus wrote:
But surely that's unenforcable?
Technically, I very much fear it is enforcable. Just add a few extra standardised codes to the DVD which tell the player to block all requests regarding (fast) forward for the time being. You are allowed to rewind, stop, and resume play. If you were fast-forwarding to begin with, stop and show the footage in between, and resume fast-forwaring once you've reached its end.
It's rather like the region system. Many players offered a shortcut to disable this idiocy, although I am not sure whether that is still the case.