get_codeschooltv_videos.rb

require 'bundler/setup'
require 'mechanize'
require 'open-uri'

agent = Mechanize.new
# agent.set_proxy 'localhost', 3128

# login
agent.get('https://www.codeschool.com/users/sign_in') do |page|
  result = page.form_with(:action => '/users/sign_in') do |form|
    form['user[login]'] = 'username'
    form['user[password]'] = 'password'
  end.submit
end

agent.get('http://www.codeschool.com/code_tv') do |page|
  page.parser.css('article.screencast h4 a').each do |link|
    video_name = link['href'].split('/').last

    puts "Downloading #{video_name} ... "
    next if File.exists?("#{video_name}.mp4")

    agent.get("http://www.codeschool.com/code_tv/#{video_name}") do |page|
      video = agent.get_file("http://www.codeschool.com/code_tv/#{video_name}/download?version=sd")

      File.open("#{video_name}.mp4", 'w') do |f|
        f.write(video)
      end

      #GC.start
      video = nil
    end
  end
end