Just before a film, or interview or whatever starts, there is a little machine called a “clapperboard” where someone says “3…2…1… action” and slams down the top 1/4 of the thing to the rest of it. What is it used for? It also has numbers on it and I guess indicates timing. What is the point of it?
In: Technology
It’s used by movie editors/producers to synchronize the audio and video. In the old days, it would have the scene/take numbers on it, too. You could synchronize your video to your audio by listening to and looking at the clap.
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