Blooming Animation
Stop-motion animation can be tedious and frustrating. For King Kong (1933), the animators constructed detailed miniatures and moved them slightly for each one or two frames of film. At 24 frames per second, that works out to 1,440 individual frames for each minute of onscreen time.
“The trees and plants in the background on the stop action animation sets were a combination of metal models and real plants. One day during filming, a flower on the miniature set bloomed without anyone noticing. The error in continuity was not noticed until the film was developed and shown. While Kong moved, a time-lapse photograph showed the flower coming into full bloom, and an entire day of animation was lost.”
— Source: Internet Movie Database
Trivia