Clay Animation - Production

Production

Producing a stop-motion animation using clay is extremely laborious. Normal film runs at 24 frames per second (frame/s). With the standard practice of "doubles" or "twos" (double-framing, exposing two frames for each shot), 12 changes are usually made for one second of film movement. For a 30-minute movie, there would be approximately 21,600 stops to change the figures for the frames. For a full-length (90-minute) movie, there would be approximately 64,800 stops, and possibly far more if parts were shot with "singles" or "ones" (one frame exposed for each shot). Great care must be taken to ensure that the object is not altered by accident, by even slight smudges, dirt, hair, or even dust. For feature-length productions, the use of clay has generally been supplanted by rubber silicone and resin-cast components. One foam-rubber process has been coined as "Foamation" by Will Vinton. However, clay remains a viable animation material where a particular aesthetic is desired.

A subvariation of clay animation can be informally called "clay melting". Any kind of heat source can be applied on or near (or below) clay to cause it to melt while an animation camera on a time-lapse setting slowly films the process. An example of this can be seen in Vinton's early short clay-animated film "Closed Mondays" (coproduced by animator Bob Gardiner) at the end of the computer sequence. A similar technique was used in the climax scene of Raiders of the Lost Ark to "melt" the faces of the antagonists.