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

gifify

#!/bin/bash

FFMPEG=$(command -v 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

Install instructions:

• Download into ~/bin
• Run in terminal: chmod +x ~/bin/gifify
• There is no step 3!

Run in terminal: gifify SomeVideo.mov
Result will be SomeVideo.mov.gif

Adding some quotes to support spaces in filenames

#!/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

Thanks Robin! Updated

Fixed several issues with help of the amazing https://www.shellcheck.net