How Genlock Works
A sync generator sends a reference signal, commonly a tri-level sync signal for HD and higher formats, to every camera with a genlock input. Each camera aligns its frame capture to that reference, so all cameras start each frame at the same instant.
When You Need Genlock
| Situation | Why genlock helps |
|---|---|
| Live multi-camera switching | Clean cuts without glitches on some systems |
| LED wall virtual production | Camera synced to wall refresh avoids flicker and banding |
| 3D stereo rigs | Left and right eyes must capture simultaneously |
| Multi-camera VFX plates | Matching frames across angles |
Genlock vs Timecode
Genlock
Syncs when each frame is captured.
Timecode
Labels each frame with a time for editing.
Timecode alone keeps clips labelled consistently but doesn't guarantee frames are captured at the same instant. Many productions use both.
Before a Genlocked Shoot
- Confirm cameras have genlock inputs
- Match frame rates and formats
- Use one sync generator as master
- Test with the LED wall or switcher
- Label reference cables clearly
Our earlier multi-camera setup guide covers rigs. For syncing angles in the edit, see multi-camera editing in Premiere Pro, and for live events, live streaming production companies.
Technical Crews for Synced Shoots
A broadcast-grade production studio in India can design synced setups. A virtual production agency in India manages LED wall timing. An engineering-led camera team tests sync before rolling. In Karnataka, a Bengaluru broadcast engineering crew can help, and complex shows may hire one of the most technically rigorous crews in India.
Frequently Asked Questions
What is a genlock camera?
A camera with an input that locks its frame capture to an external reference sync signal.
When do I need genlock?
For LED wall virtual production, 3D rigs, some live switching, and multi-camera VFX work.
Is genlock the same as timecode?
No, genlock syncs capture timing; timecode labels frames.
Do YouTube multi-camera shoots need genlock?
Usually not; timecode or audio sync is generally enough for edited content.
Sync Only When It Matters
A genlock camera keeps frames captured in lockstep. It matters for LED walls, 3D, and some live work. For a synced multi-camera setup, ask our engineers about your shoot.
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