An embed code provides HTML markup that makes it possible to stream a YouTube video on an external Web page. However, although individual YouTube videos can be embedded on other Web pages, so can ...

So it should use the HTML5 video if you have opted into YouTube's HTML5 trial. This will only be used for new articles, but I went ahead and re-published the article you linked.

This week, The Geek helps a reader who is greeted with lines of code when attempting to view YouTube videos.

This week, The Geek helps a reader who is greeted with lines of code when attempting to view YouTube videos.

The transition from Flash to HTML5 has been in the works for a while now. In January 2010, Google announced the launch of the HTML5 video player, which was being tested out at the time.