One time while dining there the cast member said that the clips are on a roll of film, which is the only one they have, and it breaks from time to time requiring mending. Cant imagine it isnt digitized in some way now, but could be possible if using film, it broke in that area and was not useable... Or the cast member was telling a really good story.
Another thing, there is a clip with a guy that looks exactly like the "Jimmy Palmer" character from NCIS (even similar glasses). It is in the "News of the Future" clip, the guy in the plastic suit. Proof of time travel... makes you wonder.