使用视频作为网页背景的技术探讨

<video autoplay loop poster="polina.jpg" id="bgvid">

<source src="polina.webm" type="video/webm">

<source src="polina.mp4" type="video/mp4">

</video>

================

video#bgvid {

position: fixed; right: 0; bottom: 0;

min-width: 100%; min-height: 100%;

width: auto; height: auto; z-index: -100;

background: url(polina.jpg) no-repeat;

background-size: cover;

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<!--[if lt IE 9]>

<script>

document.createElement('video');

</script>

<![endif]-->

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video { display: block; }

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http://www.webhek.com/video-background/