dotfiles/bin/video2gif

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#!/usr/bin/env bash
if [ $# -ne 3 ]; then
echo -e "\033[31;1merror:\033[0m this script expects three arguments, the file, the starting time and the duration."
exit 1
fi
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if [ ! -f "$1" ]; then
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echo -e "\033[31;1merror:\033[0m couldn't open $1: no such file."
exit
fi
palette_dir=$(mktemp -d)
ffmpeg -y -ss $2 -t $3 -i $1 \
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-vf fps=30,scale=320:-1:flags=lanczos,palettegen $palette_dir/palette.png > /dev/null 2>&1
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ffmpeg -ss $2 -t $3 -i $1 -i $palette_dir/palette.png -filter_complex \
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"fps=30,scale=320:-1:flags=lanczos[x];[x][1:v]paletteuse" -y output.gif > /dev/null 2>&1
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rm -rf $palette_dir