Use firefox plugin to get the real download URL from youtube. —Download helper,then use commend like following:

wget -O name.flv  ”http://www.free78.cn/mov.flv”

Ok,you got the flv with name.flv

<script type=”text/javascript” src=”http://flvplayer.com/free-flv-player/flvplayer/swfobject/swfobject.js”></script>
<div id=”embed_player”>
<h1>Please Upgrade Your Flash Player</h1>
<p><a href=”http://www.adobe.com/go/getflashplayer”><img src=”http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif” alt=”Get Adobe Flash player” /></a></p>
</div>
<script type=”text/javascript”>
var flashvars = {
flvpFolderLocation: “http://flvplayer.com/free-flv-player/flvplayer/“,
flvpVideoSource: “http://www.free78.cn/sex1.flv“,
flvpWidth: “640″,
flvpHeight: “375″,
flvpInitVolume: “50″,
flvpTurnOnCorners: “true”,
flvpBgColor: “FFFFFF”
};
var params = {
bgcolor: “FFFFFF”,
menu: “true”,
allowfullscreen: “true”
};
swfobject.embedSWF(”http://flvplayer.com/free-flv-player/FlvPlayer.swf“, “embed_player”, “640″, “375″, “9.0.0″, “http://flvplayer.com/free-flv-player/flvplayer/swfobject/expressInstall.swf“, flashvars, params);
</script>

Change here:

flvpVideoSource: “http://www.free78.cn/bobby.flv“,  Please change your FLV file URL. Then you can add this code to any of html page.You can watch the FLV online now!