<video controls
    width="250"
    height="200"
    muted>
    <source src="/media/cc0-videos/flower.webm"
            type="video/webm">
    <source src="/media/cc0-videos/flower.mp4"
            type="video/mp4">
    Download the
    <a href="/media/cc0-videos/flower.webm">WEBM</a>
    or
    <a href="/media/cc0-videos/flower.mp4">MP4</a>
    video.
</video>