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Can anyone explain how a clapping board with numbers on it is supposed to synchronize sound and picture? Sometimes, wiki articles overlook the most obvious things in search of minutia. —Preceding unsigned comment added by 69.248.127.197 (talk) 02:52, 10 December 2007 (UTC)
If anyone could add when they first came into use, that'd be ...useful :) --- Mike 19:23, 15 Jun 2005 (UTC)
a picture would be nice too
I know that "clapperboard" is the usual UK term, but I suggest redirecting this to Clapboard, which is basically a better article that contains all the information that's here and more. We should also move the TV series info to Clapperboard (TV series). -- Arwel (talk) 17:34, 29 December 2005 (UTC)
A number of corrections and amplifications:
Only 16mm news cameras used so-called single-system sound, with the audio recorded beside the images. All 16 and 35mm production cameras used "double-system" sound, recorded separately. Back when the sound was recorded by photographing the output of a photo-electric cell, the sound recorder and camera were synced by slaving their motors. When tape recorders replaced optical ones, the camera output a "control track" signal that was recorded with the sound. (Now, it's SMPTE time code -- at least in the U.S.) In post production, the audio and visual tracks had to be aligned by eye, ear, and hand, a process called (at least in Hollywood) "syncing the dailies." (The tape recording had been copied to a strip of magnetic film, perforated identically with the work print of the picture film.)
1. The film was placed in the picture head of a Moviola and run back and forth until the very first frame of stick-contacting-slate was in the gate (viewer).
2. The audio track was placed in an adjacent but independent sound head and reviewed similarly until the visible spike (optical recording) or first loud “PRP” (tape recording) was in the gate of the sound head.
3. The two heads were locked together to synchronize them.
4. The ganged picture and sound strips were slowly run in reverse into unwanted film for maybe a meter, and then the frame in each gate was marked (usually with a grease pencil).
5. The synced strips were again run in reverse until the grease pencil marks appeared; then each mark was punched with a paper punch.
After that, picture and track(s) could be removed and stored, and then re-used when wanted, by aligning the punch marks in the Moviola gates.
In the 1960s and 70s I performed this tedious chore on both 16mm and 35mm dailies thousands of times.
RE the slating process: a truly macho clapper-loader (not called that in the U.S.) could operate the slate one handed. If the slate moved or the stick bobbled, the camera operator would call, “bad slate,” and the process would be repeated. When, for some reason, a shot had to be slated at its end instead of its start, the slate would be operated upside down. Jim Stinson (talk) 00:45, 28 December 2013 (UTC)
Does anyone know how the european slate number works?
Is it incremented for each new take, or only for each new scene? How do they make sure each camera has a separate slate number?
129.215.62.144 11:03, 12 December 2006 (UTC)
The current picture mentions "Wikipedia". That's not appropriate. —Ben FrantzDale 21:36, 27 January 2007 (UTC)
Nobody has a good picture of a timecode slate?
I also think this article might be changed to Slate, since everywhere I've ever worked and heard it said, it's called a slate!
So clapperboards aren't used to indicate that the take has begun? 169.233.59.10 (talk) 20:37, 5 November 2009 (UTC)
On a number of television outtakes, I've seen scenes shown with the clapperboard information left in. On the boards I've seen there is a line marked "VTR". What does this mean?Blozier2006 (talk) 16:38, 22 August 2010 (UTC)Bryce L.
It means "Video Tape Recorded" - The date the show was recorded for future airing. — Preceding unsigned comment added by 173.160.170.45 (talk) 23:51, 23 February 2018 (UTC)
Is this section not a blatant plug by a company selling Clapperboards for this purpose? This should be deleted imho. —Preceding unsigned comment added by 84.9.15.30 (talk) 11:07, 22 October 2010 (UTC)
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