先看演示效果
首先引入JS
<script type="text/javascript">
document.getElementById("mcvideo").style.height =
document.getElementById("mcvideo").scrollWidth * 0.65 + "px";
</script>
视频引入代码
<iframe
id="mcvideo"
src="//player.bilibili.com/player.html?aid=969951173&page=1&high_quality=1"
scrolling="no"
border="0"
frameborder="no"
framespacing="0"
allowfullscreen="true"
width="100%"
>
</iframe>