<html>
<body>
<p>Video to use:</p>
<video id="video1" controls width="270" autoplay>
<source src="mov_bbb.mp4" type="video/mp4">
<source src="mov_bbb.ogg" type="video/ogg">
<source src="mov_bbb.webm" type="video/webm">
</source></source></source></video>
<p>Canvas (the code draws the current frame of the video every 20 millisecond):</p>
<canvas id="myCanvas" width="270" height="135" style="border:1px solid #d3d3d3;">
您的浏览器不支持 HTML5 canvas 标签。</canvas>
<script>
var v=document.getElementById("video1");
var c=document.getElementById("myCanvas");
ctx=c.getContext('2d');
v.addEventListener('play', function() {var i=window.setInterval(function() {ctx.drawImage(v,5,5,260,125)},20);},false);
v.addEventListener('pause',function() {window.clearInterval(i);},false);
v.addEventListener('ended',function() {clearInterval(i);},false);
</script>
</body>
</html>