full screen video background //sections video background

jQuery(document).ready(function($) {

    $(window).on('resize', scaleVideo);

    var vid = document.getElementById("video");
    vid.onloadedmetadata = function() {
        scaleVideo();
    };
    function scaleVideo(){

    //GRAVE WINDOW HEIGHT AND WIDTH.
    var windowHeight=$(window).height();//change window height and width to desire container to set identified sections height //and width.
    var windowWidth=$(window).width();

    //GET VIDEO WIDTH AND HEIGHT;
    var videoNativHeight=$('.bg_video')[0].videoHeight;
    var videoNativeWidth=$('.bg_video')[0].videoWidth;

    // SCALE FACTORS
    var heightScaleFactor=windowHeight / videoNativHeight;
    var widthScaleFactor=windowWidth / videoNativeWidth;

    // GET THIS HIGHEST SCALE FACTOR
    if(widthScaleFactor>heightScaleFactor){
        var scale=widthScaleFactor;
    }else{
        var scale=heightScaleFactor;
    }

    var scaledVideoHeight=videoNativHeight * scale;
    var scaledVideoWIdth=videoNativeWidth * scale;
    $('#video').height(scaledVideoHeight);
    $('#video').width(scaledVideoWIdth);

    };
        var $video = $('#video');
        $video.on('canplaythrough', function() {
           this.play();
        });
});

autoplay solution

http://pastebin.com/5S9VW1k2