playing video by embed tag in window xp

while playing video by embed tag in src mp4 and swf file are working but playing flv is not working in any browser on my window xp . please help .

<embed src="videoplayback.flv" bgcolor="#000"
 type="application/x-shockwave-flash"
pluginspage="http://www.adobe.com/shockwave/开发者_StackOverflow社区download/index.cgi?P1_Prod_Version=ShockwaveFlash"

name="mainflash1"  autostart="false" loop="false" height="450" width="450" allowscriptaccess="samedomain"
 >
<noembed>Sorry, your browser doesn't support the embedding of multimedia.</noembed>
</embed>

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For playing FLV in html, you should use the <object> tag. For example:

<object type="application/x-shockwave-flash" 
width="320" height="240" 
wmode="transparent" 
data="player.swf?file=video.flv&autoStart=false">
<param name="movie" 
value="player.swf?file=video.flv&autoStart=false"/>
<param name="wmode" value="transparent"/>
</object>

Player.swf is player swf file and filename is the file attribute.