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What is Timecode?

Timecode labels positions in audiovisual media with structured values commonly expressed as hours, minutes, seconds, and frames. It provides a shared reference for editing, synchronization, logging, and broadcast control.

How Timecode works

A timecode label maps a point on a program timeline to a frame-oriented clock, giving production systems a stable vocabulary for temporal positions. Its interpretation depends on the nominal frame rate, counting convention, and starting value rather than the digits alone. It may travel as a recorded signal, container metadata, or sidecar data. Editors, recorders, caption tools, and automation systems use it to exchange decisions without relying on imprecise elapsed time.

Key facts

  1. Drop-frame timecode skips selected frame numbers to keep clock labels close to real elapsed time at fractional NTSC-derived rates; it does not remove or discard video frames.
  2. Linear timecode can be recorded as an audio-like signal, while vertical-interval timecode is associated with video scanning; file workflows may instead store a timecode metadata track.
  3. A container’s decode or presentation timestamps are not automatically the same as editorial timecode: one schedules media playback, while the other labels positions for people and tools.

When Timecode matters

Use timecode to align captions, annotations, edits, or recordings from multiple cameras with specific frames. Confirm frame-rate and drop-frame conventions, because matching labels can otherwise identify different moments.

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