Aha, finally fount it.
Of course, code for inserting flv like these:
$embed$ src="https://www.aizog.com/flvplayer/flvplayer.swf" allowfullscreen="true" flashvars="vcastr_file="flv url"&LogoText="text"" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="450" height="363">$/embed$
"$$"->"<>"
