SMPTE Timecode Media
- Linear timecode, a.k.a. "longitudinal timecode" and "LTC" (pronounced "lit-see"): suitable to be recorded on an audio channel, or by audio wires. This is how it is distributed within a studio to synchronize recorders and cameras. To read LTC, the recording must be moving, meaning that LTC is useless when the recording is stationary or nearly stationary. This shortcoming led to the development of VITC.
- Vertical interval timecode, a.k.a. VITC (pronounced "vit-see"): recorded directly into the VBI (vertical blanking interval) of the video signal on each frame of video. The advantage of VITC is that, since it is a part of the playback video, it can be read when the tape is stationary.
- CTL timecode (control track longitudinal): SMPTE timecode embedded in a videotape's control track.
- Visible time code, a.k.a. burnt-in timecode and BITC (pronounced "bit-see") - the numbers are burnt into the video image so that humans can easily read the time code. Videotapes that are duplicated with these time code numbers "burnt-in" to the video are known as window dubs.
- Film labels, such as Keykode.
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