Mediaelementjs 2.14.0在ie8中不起作用

Question

我使用的是Mediaelementjs 2.14.0，它在现代浏览器中运行良好。当我在IE8中运行它并点击播放时它会要求我下载视频文件。

的HTML

<div class="player-container">
<video width="640" height="360" id="demo-player" poster="media/echo-hereweare.jpg" controls preload="none" autoplay>
    <!-- MP4 source must come first for iOS -->
    <source type="video/mp4" src="media/echo-hereweare.mp4" />
    <!-- WebM for Firefox 4 and Opera -->
    <source type="video/webm" src="media/echo-hereweare.webm" />
    <!-- OGG for Firefox 3 -->
    <source type="video/ogg" src="media/echo-hereweare.ogv" />

    <!-- Fallback flash player for no-HTML5 browsers with JavaScript turned off -->
    <object width="640" height="360" type="application/x-shockwave-flash" data="js/flashmediaelement.swf">      
        <param name="movie" value="js/flashmediaelement.swf" /> 
        <param name="flashvars" value="controls=true&amp;file=media/echo-hereweare.mp4" />      
        <!-- Image fall back for non-HTML5 browser with JavaScript turned off and no Flash player installed -->
        <img src="media/echo-hereweare.jpg" width="640" height="360" alt="Here we are" title="No video playback capabilities" />
    </object>   
</video>
</div>

JS

<script>
$(document).ready(function(e) {
    $('#demo-player').mediaelementplayer();
});
</script>