Jekyll YouTube Embed Plugin

README.md

This is a plugin meant for Jekyll.

Example use:

Easily embed a YouTube video. Just drop this file in your _plugins directory.

{% youtube oHg5SJYRHA0 %}

You can also specify a height and width. If you do not, it defaults to 560 x 420.

{% youtube oHg5SJYRHA0 500 400 %}

youtube.rb

class YouTube < Liquid::Tag
  Syntax = /^\s*([^\s]+)(\s+(\d+)\s+(\d+)\s*)?/

  def initialize(tagName, markup, tokens)
    super

    if markup =~ Syntax then
      @id = $1

      if $2.nil? then
          @width = 560
          @height = 420
      else
          @width = $2.to_i
          @height = $3.to_i
      end
    else
      raise "No YouTube ID provided in the \"youtube\" tag"
    end
  end

  def render(context)
    # "<iframe width=\"#{@width}\" height=\"#{@height}\" src=\"http://www.youtube.com/embed/#{@id}\" frameborder=\"0\"allowfullscreen></iframe>"
    "<iframe width=\"#{@width}\" height=\"#{@height}\" src=\"http://www.youtube.com/embed/#{@id}?color=white&theme=light\"></iframe>"
  end

  Liquid::Template.register_tag "youtube", self
end

It should be https src for the generated iframe code.
E.g.:
"<iframe width="#{@width}" height="#{@height}" src="https://www.youtube.com/embed/#{@id}?color=white&theme=light\"></iframe>"

jekyll-spaceship - 🚀 A Jekyll plugin to provide powerful supports for table, mathjax, plantuml, mermail, emoji, youtube, vimeo, dailymotion, etc.

Github: https://github.com/jeffreytse/jekyll-spaceship

I couldn't use this directly, because Github-Pages or whatever, but having implemented my own one in the form of {% include youtube.liquid id="xyz" %} I wanted to point out that you can reference the thumbnail of the video directly, and put a button on top to play the video (add ?autoplay=1 so you don't have to click twice) so that your own page doesn't have to run a bunch of spurious javascript just to make a clickable image. Here's what I did:
https://github.com/sh1boot/sh1boot.github.io/blob/master/_includes/clickable-embed.liquid