Convert .mov to .gif

mov2gif.sh

#!/bin/bash

export INPUT="${1}"
echo $INPUT
export OUTPUT="${2}"
echo $OUTPUT

if [ ! -f "$INPUT" ]
then
  echo "File $INPUT does not exists"
  return 1
fi

if [ -f "$OUTPUT" ]
then
  echo "File $OUTPUT already exists"
  return 1
fi

echo "Start converting $INPUT to ${OUTPUT}.gif ..."

ffmpeg -i "$INPUT" -pix_fmt rgb8 -r 10 "${2}.gif" && gifsicle -O3 "${2}.gif" -p "${2}.gif"

For MacOS
brew install ffmpeg gifsicle