'What is the best solution of motion interpolation by CPU?

I've been using FFmpeg's "minterpolate" filter to implement motion interpolation to get a higher frame rate for a while. However, because "minterpolate" doesn't support hardware acceleration and multithread, it is very slow to finish that process, particularly on devices that only have CPU, which make the situation worse because I cannot use neural network such as DAIN(by SJTU).

Thus, I would like to ask for some alternatives for "minterpolate" filter, which is supposed to be faster and has a decent quality.

I knew SVP can do, but it is not open-sourced and therefore it cannot be integrated to other software.

videoffmpeginterpolationmediavideo-processing


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