Ever needed to get all thumbnails for a youtube video?

get_thumbs.rb

#!/usr/bin/ruby

require 'open-uri'

def classy_exit
    puts "I need a youtube video URL"
    exit 0
end

def get_video_id url
    # papa loves you
    reg = /((?:https?\:\/\/)?(?:www\.)?youtube(?:-nocookie)?.com(?:\/(?:v|embed)\/([a-zA-Z0-9_-]+))|(?:watch\?.*v=([a-zA-Z0-9_-]+))).*/
    data = reg.match url

    data[2] || data[3] if data
end

classy_exit if ARGV[0].nil?

id = get_video_id(ARGV[0])

classy_exit if id.nil?

Dir.mkdir(id)
(0..5).each do |i|
    filename = "#{i}.jpg"

    begin
        content = open("http://img.youtube.com/vi/#{id}/#{filename}").read
        File.open(File.join(id, filename), "wb") { |f| f << content }
        puts "Created #{filename}"
    rescue OpenURI::HTTPError
        # some videos wont have all thumbs
    end

end