Transform a movie file to a gif. Specialised for demo's of Mobile app screen recordings.

gifify

#!/bin/bash

FFMPEG=`which ffmpeg`
INFILE=$1
OUTFILE="${INFILE}.gif"
TMPFILE="${INFILE}_gifify_palette.png"

if ! $FFMPEG -L > /dev/null 2>&1; then
    echo "Run: brew install ffmpeg"
    exit -1
fi

if [ -e $TMPFILE ]; then
    echo "Error: tmpfile $TMPFILE already exists"
    exit -1
fi

FILTER="fps=10,scale=320:-1:flags=lanczos"


$FFMPEG -i $INFILE -vf "$FILTER,palettegen" -y $TMPFILE
$FFMPEG -i $INFILE -i $TMPFILE -lavfi "$FILTER [x]; [x][1:v] paletteuse" -y $OUTFILE

if [ -e $TMPFILE ]; then
    rm $TMPFILE
fi