timecodegenlock

Timecodegenlock is the coordinated use of timecode and genlock signals to synchronize multiple video devices in a production or post‑production workflow. Timecode provides a precise, continuous timestamp for each frame or audio sample, while genlock supplies a common video reference clock so devices lock to the same timing grid and maintain phase alignment.

Implementation typically designates a timecode master or timecode generator that also distributes a genlock reference to all devices. Some systems combine both functions in a single unit; others rely on separate sources and a distribution network. Signals are usually carried over standard interfaces: timecode in SMPTE formats (LTC or VITC) and genlock as a house reference signal such as black burst or tri-level sync, routed to each device’s timecode/genlock input. In some setups, SDI equipment can also carry embedded timing information, depending on capabilities and standards.

Uses include enabling frame‑accurate switching and recording in multi‑camera broadcasts, synchronized ingest for editing and VFX pipelines, and reliable logging where several sources must share a common timeline. Timecodegenlock helps ensure that video frames align across devices, that audio and video stay in sync, and that events can be correlated during post‑production.

Standards and considerations: timecode follows SMPTE/EBU conventions, with LTC or VITC formats; genlock relies on a consistent reference signal. Practical concerns include device compatibility, distribution quality, cabling distances, jitter, and matching frame rates. In newer workflows, IP‑based synchronization and Precision Time Protocol (PTP) may supplement or replace traditional genlock in some environments.