.videoBox{

    width: %;

    height: %;

}

#example_video{

    width: %;

    height: %;

}

<div class="videoBox">

   <video id="example_video" class="video-js vjs-default-skin vjs-big-play-centered" muted autoplay controls preload="none" width="" height=""

   poster="http://video-js.zencoder.com/oceans-clip.png" data-setup="{}">

   　　<source src="https://wts.itqiche.com/u5/car_u5_video/XuHang.mp4" type='video/mp4' />

   </video>

</div>

<script type="text/javascript">

    var myPlayer = videojs('example_video');

    videojs("example_video").ready(function(){

        var myPlayer = this;

        myPlayer.play(); // 自动播放

        console.log();

    });

</script>