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Video frame interpolation, a blessing or a curse?

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CatRobau who makes “videos about AI upscaling, machine learning, and graphics mods” has made stop motion animations from the past look smoother by producing in-between frames (video frame interpolation) using artificial intelligence: this increases the amount of frames per second (FPS). He uses Flowframes with RIFE to “interpolate the original frame rate from 23.98 FPS to 191.74 FPS and then used FFMPEG to reduce that back to 60 FPS”. The higher frame rates work well with certain animations, of animals that are supposed to look alive, like ‘King Kong’ (1933).

But when magic is involved (like with the re-animation of skeletons in ‘Jason and the Argonauts’ (1963)) a more jerky artificial-looking animation style – the intended effect in the original film – is good as it is, was masterfully done and I think needs no further smoothening.