judder

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judder

Informal chiefly Brit
abnormal vibration in a mechanical system, esp due to grabbing between friction surfaces, as in the clutch of a motor vehicle

judder

A shaking or wobbling effect in a video image. Judder is often caused by the conversion of a 24 frames-per-second (fps) movie to a 30 or 60 fps video format, or when viewing 24 fps content on a 60 Hz monitor. See telecine, flicker and adaptive sync.
References in periodicals archive ?
When you put the cursor arrow on one of the images, up comes the name of the project and off the strip judders, now unreadably, in the opposite direction to the one it was travelling in initially.
Headmistress Maureen Crandles said: "My office is directly below a class and the whole room judders when the children push back their chairs.
All I'd suggest is don't apply lipstick or drink coffee as the train jumps and rattles over the tracks then judders and shakes when passing other rail traffic at high speed.