OKVideo is a jQuery plugin that allows for YouTube or Vimeo videos to be used as full-screen backgrounds on webpages. OKVideo aims to be customizable while making some basic decisions about how the plugin should control video. When using OKVideo, all videos will be served from Vimeo or YouTube based on a number of variables like browser, device, bandwidth, etc.
Vide is a easy jQuery plugin for video backgrounds. All modern desktop browsers are supported.
CoverVid is a jQuery plugin to make your HTML5 video behave like a background cover image. It's so easy to use.
BigVideo.js makes it easy to add fit-to-fill background video to websites. It can play silent ambient background video (or series of videos). Or use it as a player to show video playlist.
BigVideo.js can also show big background images, which is nice to have for showing big background images for devices that don’t have autoplay for ambient video.