Black video bug

1

I have a sporadic bug where sometimes when a video is played the video doesn’t show up for about 10 seconds but the audio is there.

i’m using flash as3:

            _video = new Video();
            _sound = new SoundTransform();

            var connection:NetConnection = new NetConnection();
            connection.connect(null);
            _stream = new NetStream(connection);
            _stream.play(flvUrl);
            
            var Client:Object = new Object();
            Client.onMetaData = onMetaData;            
            _stream.client = Client;
            _stream.soundTransform = _sound;
            _video.attachNetStream(_stream);
            _video.smoothing = true;
            _stream.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus);

has anybody encountered anything like this before? i can’t find anything about this on the net.