Download binary file through HTTP

gistfile1.rb

require 'open-uri'

File.open("/my/local/path/sample.flv", "wb") do |saved_file|
  # the following "open" is provided by open-uri
  open("http://somedomain.net/flv/sample/sample.flv", 'rb') do |read_file|
    saved_file.write(read_file.read)
  end
end