This only really works for videos. Because with those you are not limited by hardware performance, but by the framerate the video was saved in and you always have the full image of every single frame at hand. This way you can easily add additional frames between the existing ones, which interpolate between the current frame image and the upcoming frame image.
In games however, you can't add new frames quite that simple, you are already limited by what your hardware is able to generate. And even more important: You only have the full image of the current frame. The next/upcoming frame is still being computed (that's what realtime graphics / games are all about), so no way to interpolate between the current and next frame. The data is not available.
Cheers, crosire =)
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