if your using NetStream / NetConnection / Video object for playing your flv's ... you ussually get all the info from the NetStream .. not the Video object..
var nc = new NetConnection();
nc.connect(null);
var ns = new NetStream(nc);
videoObject.attachVideo(ns);
ns.onMetaData = function(obj){...};
ns.onStatus = function(obj){...};
http://livedocs.adobe.com/flash/8/ma...=00002553.html - Docs on NetStream
but all this info is found in Flash Help as well..