Full width Background Gallery is a WordPress plugin that adds full page slider to use to your website.
You can add any number of images to the slider -You can add a youtube video or upload your own video to the background. -You can add single full page background image to your site. -You can create any number of background galleries and assign them to the posts or pages. -Easily manageable back-end. -Comes with 6 Backgrounds ready to use.
Plugin homepage: http://www.wpfruits.com/full-width-background-gallery-wordpress-plugin/