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Entries found for search: timecode

burnt-in timecode time code: See BITC.

SMPTE timecode time code: A high-frequency timing reference signal developed by by the Society of Motion Picture and Television Engineers and used for synchronizing film and videotape to audio tape and software-based playback systems. SMPTE is a tempo-independent code which comprises a continuous stream of absolute positional data, so if a short section of code gets lost or corrupted, the system knows exactly where itís supposed to be the next time a piece of valid code is read. Usually generated at the picture source, i.e., the SMPTE master clock generator that drives the film or television camera system, the signal is recorded onto the videotape or along the edge of the motion picture film, and sent simultaneously to the audio recorder. The signal contains encoded numerical information, allowing the same point in film or tape time to be located on the separate strips of film/videotape and audio tape, for proper alignment or ADR. The playback operator can select a SMPTE timecode number that instructs videotape and audiotape machines to locate a certain point and begin playing in sync from that absolute location. TimecodeTime code data are in the form of a timecodetime code address (TCA), which make up the HH:MM:SS:FF part of the timecodetime code word, where HH is a two-byte number for absolute time hour, MM is minutes, SS is seconds, and FF denotes the absolute frame number. See frame, jam sync, LTC, MTC, BITC, VITC., and bi-phase modulation. Also called longitudinal timecodetime code. As opposed to speed-only sync codes such as pilot tone, FSK, and DIN sync.

restored timecode time code: In SMPTE timecode synchronization, a newly generated, continuous timecodetime code that will maintain sync with an external reference code. Used to replace a discontinuous time code, such as one that includes unrelated segments of code, perhaps copied from unrelated scenes and takes. See jam sync.

regenerating timecode : In copying a video or audio tape with SMPTE timecode, the process of reading the code from the master tape and creating a perfect electronic duplicate of it for recording on the copy. The new code is created by a separate device, and is necessary to ensure that the audio or video copy is free of timing errors and dropouts.

timecode timecode: A type of non-audio signal that contains information about elapsed time on a film, tape, or disk recording. Used for a synchronization reference when synchronizing two or more machines such as sequencers, drum machines, and tape decks. See SMPTE timecodetimecode, MTC, FSK.

timecodetimecode generator : An electronic device that produces SMPTE timecodetimecode signals, which can be used to synchronize the frame rate of motion picture cameras and recorders, television cameras, VTRs, VCRs, etc.

timecode regeneration : The process of creating a new timecode based on an incoming timecode signal or positional reference. See dropout, freewheeling.

drop-frame timecode time code: A version of the SMPTE timecode used for color video recording where two frames are dropped at the beginning of each minute, except at the beginning of every tenth minute, devised to compensate for the difference between the NTSC (US) standard of 29.97fps and a real-time counter. The difference equates to 108 frames per hour. To avoid this confusion, most audio-only synchronization applications specify a non-drop timecodetime code.

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