#!/usr/bin/env zsh
if [ "$#" -ne 3 ]; then
    echo "Usage: togif <input file> <output file> <scale>\n"
    echo "Example with 500px width and auto height:\n"
    echo "  \$ togif myinput.mov myoutput.gif 500:-1"
    exit -1
fi

TEMP_FOLDER=/tmp/gifconvert-$(date)
mkdir $TEMP_FOLDER
ffmpeg -i $1 -vf scale=$3 -r 10 $TEMP_FOLDER/ffout%3d.png
convert -delay 8 -loop 0 $TEMP_FOLDER/ffout*.png $2
rm -rf $TEMP_FOLDER