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How-To Geek

Judder

Judder refers to a jittery, shaking, or wobbly effect in video footage. A very common cause of Judder is when ’24 frames-per-second’ video footage is converted to a ’30 or 60 frames-per-second’ format. The uneven division of 24 into a ’30 or 60 frames-per-second’ format means that some video frames have to be repeated an additional extra time to fill in the missing frames, therefore causing the Judder effect.