YTPlayer – Plays YouTube Videos in Background with HTML5 Video Player
YTPlayer jQuery plugin let’s you play YouTube videos in background with HTML5 video player. An open source jQuery component to easily build your custom YouTube® player by making use of both HTML5 and YouTube API.
Now, you can also use YTplayer in your WordPress blog. mb.YTPlayer for background videos is what a video player plugin for WordPress through which you can play YouTube videos in background of posts/pages.
Check out the Demo here.