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Butterflow: motion interpolated videos from the command line

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Re: Butterflow: motion interpolated videos from the command line

#2
This looks really cool to this casual observer. It actually uses optical flow to interpolate frames. The slow-motion demos are very impressive.

Is this the first open source software that uses this approach? I found a masters' thesis project, but it doesn't appear to be maintained.

Does anyone know if this is how slow-motion works on iphone cameras?

Re: Butterflow: motion interpolated videos from the command line

#3

This looks really cool to this casual observer. It actually uses optical flow to interpolate frames. The slow-motion demos are very impressive. Is this the first open source software that uses this approach? I found a masters' thesis project, but it doesn't appear to be maintained. Does anyone know if this is how slow-motion works on iphone cameras?

There are a couple of projects that use optical flow:

https://nageru.sesse.net/ https://github.com/slowmoVideo/slowmoVideo/

Re: Butterflow: motion interpolated videos from the command line

#4

This looks really cool to this casual observer. It actually uses optical flow to interpolate frames. The slow-motion demos are very impressive. Is this the first open source software that uses this approach? I found a masters' thesis project, but it doesn't appear to be maintained. Does anyone know if this is how slow-motion works on iphone cameras?

iPhone cameras actually record at 120/240fps rather than recording at a lower rate and interpolating.

Thank god. I don’t want the soap opera effect on my videos. Interpolation is the first thing I disable on a TV.

Re: Butterflow: motion interpolated videos from the command line

#5

This looks really cool to this casual observer. It actually uses optical flow to interpolate frames. The slow-motion demos are very impressive. Is this the first open source software that uses this approach? I found a masters' thesis project, but it doesn't appear to be maintained. Does anyone know if this is how slow-motion works on iphone cameras?

There's https://www.svp-team.com/wiki/Main_Page which is based on http://avisynth.nl/index.php/MVTools

Re: Butterflow: motion interpolated videos from the command line

#6
post #4

This looks really cool to this casual observer. It actually uses optical flow to interpolate frames. The slow-motion demos are very impressive. Is this the first open source software that uses this approach? I found a masters' thesis project, but it doesn't appear to be maintained. Does anyone know if this is how slow-motion works on iphone cameras?

iPhone cameras actually record at 120/240fps rather than recording at a lower rate and interpolating. Thank god. I don’t want the soap opera effect on my videos. Interpolation is the first thing I disable on a TV.

On TVs where it's interpolating to convert from 24fps to 60 it usually looks terrible, but slowing down a real 60fps video using motion interpolation usually looks much better, as there's less that needs guessing

Re: Butterflow: motion interpolated videos from the command line

#7
Would be cool if this can be integrated with mpv, I tried SVP but integration is a bit awkward when you just want to chill.

That said SVP is nice for 30 fps youtube videos on slower connections or just videos without a high-quality 60hz source... even without svp videos look significantly nicer in mpv than in chrome on youtube.

Re: Butterflow: motion interpolated videos from the command line

#8
Found this cool project (not mine) that uses butterflow for applying motion interpolation to Himawari-8 satellite images: https://github.com/dandelany/animate-earth

The final results look really nice https://www.youtube.com/channel/UC6Mlo4zfmEITcNoCpBKfEfg/pla...

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