Pixillation is a specialized technique for animating people. The camera records occasional frames of some natural or real-time event, but because of the intermittent filming, the effect of the resulting film is that of an unnatural movement somewhat like in an old silent movie. A stationary camera records a stationary posed subject, shooting on twos. Between exposures, the character moves to a new position. The process is low, tiring and requires a great amount of patience. Because the subject in pixillation is usually a living person, complete control of the pose is difficult. Trial and error rules pixillation.
Example of Pixillation - Norman McLaren’s Oscar-winning film Neighbours