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Kingsly2015 t1_iu3c9q6 wrote

Reply to comment by Uranium_moth in TIL, in film, a clapperboard’s purpose is ensuring proper synchronization of audio and video in post-production. It provides a distinct “clap” along with a visual event for the editor to reference at the start of a scene. by PianoCharged

“Tail slate” in the States. It’s also held upside down so that the editor can visually recognize that is the tail of the previous scene and not the marker for the next scene (makes more sense when you consider a continuous strip of film but still has its use in digital capture to tell that it wasn’t just an overzealous 2nd who clapped the next take before they cut the camera)

Then there’s an MOS slate, where the 2nd AC puts their hand in the open sticks so that it’s physically blocked from clapping. Makes it pretty obvious that the shot does not have synced audio.

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tritisan t1_iu4kjb8 wrote

I studied film for 4 years and the only useful thing I learned was the origin of MOS. Or, mit-out sound.

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devotchko t1_iu6bypn wrote

or, "minus optical soundtrack"; the origins of "MOS" are apocryphal. Also, what school did you go to?

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