暂不支持chrom 。支持safari .其他未测试

先引用 jquery 地址。选用新浪的

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

加一个video标签

<video id="video" controls="controls">

<source src="1.mp4" />

</video>

然后js

<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>

效果图就不贴了。