YouTube introduced IFrame embeds back in July 2010 that will eventually allow embedded videos to work on mobile devices, especially those that do not support Flash. The object embeds still exist but IFrame embeds have seem to become the "recommended" method for embedding a YouTube player because they automatically select the appropriate player based on the device capabilities and available YouTube file formats. As a matter of fact, the IFrame API is not experimental anymore; so if you want to enhance your embedded player with JavaScript, IFrame embeds allow you to do just that.
In March 2012, YouTube introduced a number of enhancements around list playback functionality that allow you to embed playlists, user uploads and searches in your webpages. In the rest of this article I'll show you how to use simple, no-JavaScript, IFrame embeds that load a single video or a playlist.
Note that most of the functionality I am about to discuss is also available in the object embeds.
