Short for in-betweening, the process of generating intermediate frames between two images to give the appearance that the first image evolves smoothly into the second image. Tweening is a key process in all types of animation, including computer animation. Sophisticated animation software enables you to identify specific objects in an image and define how they should move and change during the tweening process.
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Tweening, short for "in-betweening", is a process in animation whereby an assistant animator (or a computer program) draws additional animation frames "in between" previously drawn key frames.
See also