播放视频的方法：
方法一、 使用html5播放
??? <video src="./files/Clip_480_5sec_6mbps_h264.mp4" width="1000px" height="400px" controls="controls" loop="loop" autoplay="autoplay" poster="images/zzsm.png" style="border:1px solid red;">your browser does not support the video.</video>
poster用来设置视频的封面图，
loop是否循环播放
autoplay是否自动播放
controls是否显示控制按钮
缺点：兼容不太好
方法二：使用视频插件swfobject.js?
首先下载下载所需要的文件，在demo.html中
?<!--video_1部分-->
??? <div class="video_1" id="a1">
??????? <!--<img src="{$web_path}images/banner1.jpg" />-->
??? </div>
??? <script type="text/javascript" src="js/swfobjects.js"></script>
??? <script type="text/javascript">
??????? var v = new SWFObject("files/flvplayer.swf","single","1100","550","1");
??????? v.addParam("allowfullscreen","true");?????? //可以让视频撑满限定的宽度和高度*
??????? v.addParam("wmode","transparent");????? //可以将视频设置不为最高层，其他层可以覆盖住视频*
??????? v.addVariable('volume','40');
??????? v.addVariable("autostart",'false');
??????? v.addVariable("overstretch","true");
??????? v.addVariable("file","files/11.flv");//视频路径
??????? v.addVariable("image","images/banner1.jpg");//设置视频封面图
??????? v.write("a1");
??? </script>
??? <!--end of video_1部分-->
效果如下图：
