jquery+html5实现视频截图

作者：管理员

发布时间：2015/5/7 11:46:43

评论数：0

转载请自觉注明原文：http://www.jq-school.com/Show.aspx?id=551

jquery+html5实现视频截图

<video id="video" controls="controls">
    <source src="视频demo.mp4" />
</video>
  
<button id="capture">Capture</button>
  
<div id="output"></div>

(function() {
    "use strict";
  
    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);           
  
}());

关键字：jquery html5 canvas getContext capture video