html5播放视频且动态截图实现步骤与代码(支持safari其他未测试)

点评：html5播放视频且动态截图，很时尚且炫酷的一项功能，暂不支持chrom ，支持safari其他未测试，有需要了解的朋友可以适当参考下

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<script type="text/javascript" src="http://lib.sinaapp.com/js/jquery/1.6/jquery.js"></script>

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<video controls="controls">
<source src="1.mp4" />
</video>

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<script type="text/javascript">
$().ready(function(){
var video, output;
var scale = 0.25;
var initialize = function() {
output = $("#output");
video = $("#video").get(0);
$("#capture").click(captureImage);
};
var captureImage = function() {
var canvas = document.createElement("canvas");
canvas.width = video.videoWidth * scale;
canvas.height = video.videoHeight * scale;
canvas.getContext('2d')
.drawImage(video, 0, 0, canvas.width, canvas.height);
var img = document.createElement("img");
img.src = canvas.toDataURL();
output.prepend(img);
};
$(initialize);
});
</script>