video#bgvid{ 
 position:fixed;
 left:0;
        top:0;
 min-width:100%;
 min-height:100%;
 width:auto;
 height:auto;
 z-index:1;
 visibility: visible;
}

body { width: 100%; height: 100%; top: 0; left: 0;
background: url(blank.jpg) no-repeat center top; position: fixed; z-index: -1;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}