A fork of Rural Dictionary
Usually referring to animation or an illusion of movement, FBF is when the content of an image changes every frame. This is labour intensive and a traditional form of animation.
Person A: "I like drawing but I want to see my drawings come to life!"
Person B: "You should try frame by frame animation."
A sub-category of animation, usually digital. Tweening is when you use an app/program to generate inbetweens.
An example of this can be seen when animation companies need to make content in less time. You split the layers of a character that you want to tween, then use keyframes and graphs.
Person A: "I want to try animating, but I'm not interested in frame by frame animation..."
Person B: "You should try tweening, it's where some animators start."