i don't suppose they are. but if i was a lawyer - prosecution or defence - i would want the original footage, not simply some copy, available for, as they say, fact verification and training purposes. it could so easily have been saved to a folder on the system rather than placed on disks which may or may not function later. as this has been an ongoing issue in policing for many years there is obviously some systemic difficulty and surely no one wants to be put in the position of apologising for yet another loss of police footage.