Well sheeeeeeiit, I was one of those people. Illusion, shattered☹️.
Having said that, the movie you reference, doesn't appear to have been completed. They might edit it down to like, 184mins or something🤷🏻♂️.
Discussion
Also, I refuse to believe that there hasn't been a power cut in that building over the last 52 years. Power cut = Film ends!!😬😂.
Fear not:
So, it wasn't even "Filmed" then🤔.
It is a film.
film.
the screening is the slow yellowing, cracking, and fading of the paint, a change imperceptible in short viewings but evident over years.
in this way, one can observe all paintings as film over a long enough time scale
pigments degrade over time
Well, I suppose, but conceptually this is presented as a 'film', most paintings are not. But you could argue the case :)