capybara-recording.rb

require 'RMagick'
require 'capybara'
require 'launchy'
 
module Capybara::Recording
  def start_recording
    system "rm -f tmp/*"
  end
 
  def save_recording
    anim = Magick::ImageList.new(*Dir.glob('tmp/*png'))
    anim.delay = 200
    anim.write("tmp/animated.gif")
 
    File.open("tmp/animated.html", "w") do |f|
      f.puts "<img src='animated.gif'>"
    end
  end

  def open_recording
    Launchy.open("file:///#{Dir.pwd}/tmp/animated.html")
  end
 
  def _save_screenshot
    save_screenshot "tmp/capybara-#{Time.now.to_f}.png"
  end
 
  (Capybara::Session::DSL_METHODS - [:save_screenshot]).each do |method|
    define_method method do |*args|
      super(*args)
      _save_screenshot
    end
  end
end

example.rb

require 'capybara'
require 'capybara/poltergeist'
require 'capybara-recording'

Capybara.current_driver = :poltergeist

include Capybara::DSL
include Capybara::Recording

record '/tmp/filename.gif' do
  visit 'http://www.google.com/'
  fill_in 'q', with: 'NYC'
  click_button 'Google Search'
  click_link "New York City - Wikipedia, the free encyclopedia"
end