What is it?
mb.YTPlayer for Wordpress® is a plug-in thet let you use any public embeddable Youtube videos as background of your page or of an element of your page.
The free version let you use the plugin as background video of the homepage or the same background video for all the pages with the default settings for all; it adds a watermark on the right border of the video.
You can download the Free version from the Wordpress Plugins repository.
The Plus version let you use the plugin on any pages of your site using the shortcode generator; you can specify wich element of your page should contain the background video, you can set up all the options available differently for each video used.
You can download the Plus version from the mb.ideas plugin page.
Here is a screenshot of the Plus settings page