Script for creating gifs from videos

convertToGif.sh

#!/bin/bash

if [ -z $1 ] | [ -z $2 ] | [ -z $3 ]; then
  echo "Usage: convertToGif.sh file.mp4 640:480 outputfile"
  exit 1
fi

ffmpeg -i $1 -vf scale=$2 $3.gif -hide_banner