Synchronizes video signals from multiple cameras using a common reference signal to enable seamless cuts in live productions and multi-camera setups.
Definition
Genlock synchronizes video signals from different cameras or devices via a common reference signal. The system ensures seamless cuts between camera images in live productions and multi-camera setups.
Practical Application
Genlock is used in the following production scenarios:
- Multi-camera productions: Synchronization of multiple cameras for seamless cuts
- Live broadcasting: Uninterrupted switching between camera images
- Recording: Time-synchronous recording of multiple cameras
- Compositing: Pixel-accurate overlay of video signals
Technical Details
Genlock systems operate with the following specifications:
- Black burst signal as reference (analog) or Word Clock (digital)
- Synchronization of horizontal and vertical frequency
- Compatibility with SMPTE timecode
- Support for various video formats (PAL, NTSC, HD, 4K)
Practical Tips
- Define a master camera or a separate sync generator as the reference
- Calibrate all cameras to the Genlock signal before shooting begins
- Check cable connections for signal quality
- Use signal amplifiers for longer distances
Professional Standards
Genlock systems meet the following requirements in film and television production:
- Frame-accurate synchronization for live editing
- Reduced post-production through synchronous recording
- Broadcast standards according to SMPTE and EBU
- Compatibility with professional production technology
More in the lexikon
Related terms
Editing
Color Correction
Technical adjustment of exposure, white balance, and contrast during grading — brings raw…
Camera
Cinematography
Camera · Technique
ARRIRAW
Camera · Technique
Apple ProRes Codec
Camera · Terms
SDI
SMPTE digital video transmission standard for professional cameras and monitors. Carries…