Video
Scaler
Processing that converts an incoming video signal to the native resolution and refresh rate of the display it is being sent to.
Scaling matters because sources and displays rarely agree. A 1080p laptop on a 4K display, or a 50 Hz camera feed on a 60 Hz panel, needs conversion, and doing it once in a good scaler beats letting each display do it badly. Sharpness complaints on otherwise correct systems are frequently a scaling problem, not a resolution problem.
Every scaling stage adds latency. In rooms where presenters use live microphones, cumulative latency across scaler, switcher, and codec is what causes lip-sync drift, so it is worth budgeting frames the same way you budget bandwidth.
Related terms
- HDMI
- The standard digital interface for carrying video, audio, control, and copy protection between sources and displays over one cable.
- Matrix Switcher
- A device that routes any of several video inputs to any of several outputs independently, letting multiple sources appear on multiple displays at once.
- Direct View LED
- A display built from tiled LED modules where the diodes themselves form the image, giving a seamless surface at any size with no bezels.
More Video terms
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