FLV需要播放器，其它视频格式直接插入相应的代码即可。

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/**   *视频播放 by zhensheng@   *参数说明   u - 媒体URL   w - 媒体宽度width   h - 媒体高度height   */
//播放Mediaplayer格式的视频，包括.avi .mpg .mpeg .wmv .wma .asf .mid .mp3等
function pv_m(u, w, h){   var pv=''; pv += '<object width="'+w+'" height="'+h+'" id="iask_v" classid="CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95" codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=6,4,5,715" standby="Loading Microsoft Windows Media Player components..." type="application/x-oleobject">'; pv += '<param name="FileName" value="'+u+'">';pv += '<param name="AutoStart" value="1">'; pv += '<param name="AutoSize" value="1">'; pv += '<param name="ShowControls" value="1">';pv += '<param name="ShowPositionControls" value="0">'; pv += '<param name="ShowAudioControls" value="1">';pv += '<param name="ShowTracker" value="1">';pv += '<param name="ShowDisplay" value="0">';pv += '<param name="ShowStatusBar" value="1">'; pv += '<param name="ShowGotoBar" value="0">'; pv += '<param name="ShowCaptioning" value="0">'; pv += '<param name="PlayCount" value="1">'; pv += '<param name="AnimationAtStart" value="0">';
pv += '<param name="TransparentAtStart" value="0">';
pv += '<param name="AllowScan" value="0">'; pv += '<param name="EnableContextMenu" value="0">';
pv += '<param name="ClickToPlay" value="0">'; pv += '<param name="InvokeURLs" value="1">';
pv += '<param name="DefaultFrame" value="">';
pv += '<embed src="'+u+'" width="'+w+'" height="'+h+'" type="application/x-mplayer2" pluginspage="http://www.microsoft.com/isapi/redir.dll?prd=windows&;sbp=mediaplayer&ar=media&sba=plugin&" name="MediaPlayer" showcontrols="1" showpositioncontrols="0" showaudiocontrols="1" showtracker="1" showdisplay="0" showstatusbar="1" autosize="0" showgotobar="0" showcaptioning="0" autostart="1" autorewind="0" animationatstart="0" transparentatstart="0" allowscan="1" enablecontextmenu="1" clicktoplay="0" invokeurls="1" defaultframe=""></embed>'; pv += '</object>';document.write(pv);   }  //播放Realplay格式的视频，包括.rm .ram .rmvb等
function pv_r(u, w, h){   var pv='';pv += '<object width="'+w+'" height="'+h+'" id="iask_v" classid="clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA">';
pv += '<param name="SRC" value="'+u+'">';pv += '<param name="AUTOSTART" value="1">'; pv += '<param name="CONTROLS" value="Imagewindow,StatusBar,ControlPanel">'; pv += '<param name="_ExtentX" value="18415">'; pv += '<param name="_ExtentY" value="9102">';
pv += '<param name="SHUFFLE" value="0">'; pv += '<param name="PREFETCH" value="0">';
pv += '<param name="NOLABELS" value="0">';pv += '<param name="CONSOLE" value="Clip1">';
pv += '<param name="LOOP" value="0">';pv += '<param name="NUMLOOP" value="0">'; pv += '<param name="CENTER" value="0">'; pv += '<param name="MAINTAINASPECT" value="0">'; pv += '<param name="BACKGROUNDCOLOR" value="#000000">';pv += '<embed src="'+u+'" width="'+w+'" height="'+h+'" type="audio/x-pn-realaudio-plugin" console="Clip1" controls="Imagewindow,StatusBar,ControlPanel" autostart="true">';
pv += '</object>'; document.write(pv);   } //播放Quicktime格式的视频，包括.mov .amr .3gp等 function pv_q(u, w, h){   var pv=''; pv += '<object width="'+w+'" height="'+h+'" classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B" codebase="http://www.apple.com/qtactivex/qtplugin.cab">'; pv += '<param name="src" value="'+u+'">'; pv += '<param name="controller" value="true">';
pv += '<param name="type" value="video/quicktime">'; pv += '<param name="autoplay" value="true">'; pv += '<param name="target" value="myself">';pv += '<param name="bgcolor" value="black">'; pv += '<param name="pluginspage" value="http://www.apple.com/quicktime/download/index.html">'; pv += '<embed src="'+u+'" width="'+w+'" height="'+h+'" controller="true" align="middle" bgcolor="black" target="myself" type="video/quicktime" pluginspage="http://www.apple.com/quicktime/download/index.html"></embed>'; pv += '</object>';
document.write(pv);