如何为markdown添加视频

1

<iframe height=498 width=510 src="这里嵌入视频的来源，优酷，爱奇艺等" frameborder=0 allowfullscreen></iframe>

1
2
3
4
5
6

<video id="video" controls="" preload="none" poster="http://media.w3.org/2010/05/sintel/poster.png">
      <source id="mp4" src="http://media.w3.org/2010/05/sintel/trailer.mp4" type="video/mp4">
      <source id="webm" src="http://media.w3.org/2010/05/sintel/trailer.webm" type="video/webm">
      <source id="ogv" src="http://media.w3.org/2010/05/sintel/trailer.ogv" type="video/ogg">
      <p>Your user agent does not support the HTML5 Video element.</p>
    </video>