# File lib/action_view/helpers/asset_tag_helper.rb, line 682
      def video_tag(sources, options = {})
        options.symbolize_keys!

        options[:poster] = path_to_image(options[:poster]) if options[:poster]

        if size = options.delete(:size)
          options[:width], options[:height] = size.split("x") if size =~ %r{^\d+x\d+$}
        end

        if sources.is_a?(Array)
          content_tag("video", options) do
            sources.map { |source| tag("source", :src => source) }.join.html_safe
          end
        else
          options[:src] = path_to_video(sources)
          tag("video", options)
        end
      end