What is a key frame?

Refers to the frame where the key actions in the movement or change of a character or object are located. Key frame refers to the frame in which the key actions of a character or object are moving or changing, which belongs to computer animation terminology and is equivalent to the original painting in two-dimensional animation. According to the purpose, key frames can be divided into: ordinary key frames (used to process graphics and animation) and action script key frames (used to store action scripts and control flash movies and movie clips). The concept of key frames comes from the traditional animation production. In WaltDisney's studio in the early days, skilled animators designed key pictures in cartoons, which are called key frames, and then ordinary animators designed intermediate frames. In three-dimensional computer animation, the generation of the intermediate frame is completed by the computer, and interpolation replaces the animator who designs the intermediate frame.