If you have a video camcorder , then you are used to video and auditory sensation getting recorded on the same tape . The sound and video are always synchronized because they are recorded together in one piazza ( SeeHow videocassette recorder Workfor details ) .
When filming a movie , the pictures and sound are record one by one . The impression is enter on film in the photographic camera , and the sound gets record on a separate analogue magnetic tape recorder ( or , more lately , on digital magnetic tape such as a DAT tape ) . Because they are register on two different devices , you need a way to synchronize them .
Aclapperboard– the black and white board you are talking about– is the traditional way to care the synchronization . The bottom of the clapperboard is commonly a slate of some sort on which you may write the scenery and take bit . This entropy helps identify the shot during redaction . Once the tapeline vertical flute and television camera are rolling , the clapperboard manipulator places the clapperboard in front of the television camera so the television camera can see it , reads the scene and take information so the tape recording equipment can get wind it , and then clap the glossa . During editing , it is easy to synchronize the visual of the clapper clapping with the " clap " strait it makes on the tape measure .
Thedigital slateis the more modernistic human body of the clapperboard . The tape recorder carry a timecode generator . The timecode is memorialize continuously on a special rail on the mag tape , and the timecode is also displayed continuously on a large light-emitting diode showing on the digital slate . By demonstrate the digital ticket to the camera before the action starts , the editor knows incisively what the tape ’s timecode is and can synchronise it with the pic . Sometimes a digital ticket hold a applauder , but generally it is not needed . The digital ticket normally has a slate area , because identifying each guesswork is still extremely important during editing .
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