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mplayer, mpv and I think VLC can do it, with the right output driver settings (libcaca or a few other choices.)

You can just use ffmpeg to extract frames, and then just render the raw images with unicode blocks.

(There's Kitty Graphics too, but I couldn't figure out how to make terminal UI layout work with it.)

I'd use ffmpeg to downscale the frames to the terminal size too. There are also various filters that could help quantizing the colors to what your terminal supports. The paletteuse filter will get you free dithering too.

yeah I remember learning this trick in like 2007 with libaa and later caca for color.

It looks like this app is shelling out to ffmpeg to get the bitmap of a frame and then shelling to something called chafa to covert to nice terminal-friendly video.

https://github.com/hpjansson/chafa/

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