GIF workflow for OS X Mavericks 10.9 and Homebrew 0.9.5 — lovingly adapted from https://gist.github.com/SlexAxton/4989674

.zshrc

gifify() {
  if [[ -n "$1" ]]; then
    if [[ $2 == '--good' ]]; then
      ffmpeg -i $1 -r 10 -vcodec png out-static-%05d.png
      time convert -verbose +dither -layers Optimize -resize 600x600\> out-static*.png  GIF:- | gifsicle --colors 128 --delay=5 --loop --optimize=3 --multifile - > $1.gif
      rm out-static*.png
    else
      ffmpeg -i $1 -s 600x400 -pix_fmt rgb24 -r 10 -f gif - | gifsicle --optimize=3 --delay=3 > $1.gif
    fi
  else
    echo "proper usage: gifify <input_movie.mov>. You DO need to include extension."
  fi
}

Install.sh

# Installation for OS X Mavericks 10.9

brew install ffmpeg
brew tap phinze/homebrew-cask
brew install brew-cask
brew cask install xquartz
open /opt/homebrew-cask/Caskroom/xquartz/2.7.6/XQuartz.pkg
# Click through the XQuartz installer
brew install gifsicle
brew install imagemagick

usage.sh

# Take screencast using Quicktime. Export as high quality as possible.
# --good flag is highly recommended, unless size really counts

gifify screencap.mov
gifify screencap.mov --good