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#!/bin/bash
 
# from https://superuser.com/questions/556029/how-do-i-convert-a-video-to-gif-using-ffmpeg-with-reasonable-quality
#
# also: https://engineering.giphy.com/how-to-make-gifs-with-ffmpeg/
# convert movie to gif
 
ffmpeg -ss 30 -t 3 -i input.mp4 -vf "fps=10,scale=320:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" -loop 0 output.gif