HTML5设置视频背景的方法介绍

video{

          position: fixed;

          right:0;

          bottom: 0;

          min-width: 100%;

          min-height: 100%;

          width: auto;

          height: auto;

          z-index: -9999;

          /*灰色调*/

          /*-webkit-filter:grayscale(100%)*/

      }

<script>

    var video= document.getElementById('v1');

    video.playbackRate = 0.5;

</script>