Jerkiness (sometimes called strobing or choppy footage) describes the perception of individual still images while watching a motion picture.
However, some technologies cannot process or carry data fast enough for sufficiently high frame rates.
For example, viewing motion pictures by Internet connection generally necessitates a greatly reduced frame rate, making jerkiness clearly apparent.
In conventional cinematography, the images are filmed and displayed at 24 frames per second, at which speed jerkiness is not normally discernible.
Animated cartoon films are typically made at reduced frame rates (accomplished by shooting several film frames of the individual drawings) so as to limit production costs, with the result that jerkiness tends to be apparent, especially on older limited animation features.