Black screen during video loading

Hello everybody!

Firstly, Sorry for my poor English.

I am doing an air for android app, and I have a problem when I try to load a video included in my apk.

When a mobile phone try to load the video, the screen is black for one second.

I would like to know if It is posible to make a preloader or any solution to avoid the black screen.

Here you can see the situation: www.youtube.com/v/KoJ2D2eHknU

And here my code:

var mNetConnection:NetConnection=newNetConnection();
mNetConnection.connect(null);
var mNetStream:NetStream=newNetStream(mNetConnection);     
video.attachNetStream(mNetStream);
mNetStream.client=this;
mNetStream.bufferTime=0;  
mNetStream.play("video/angela.f4v");
mNetStream.addEventListener(NetStatusEvent.NET_STATUS, onNetStreamStatusEvent);

function onNetStreamStatusEvent(event:NetStatusEvent):void
{
   if(event.info.code =="NetStream.Play.Start")
   {
      trace("NetStream.Play.Start");     
   }
   if(event.info.code =="NetStream.Play.Stop")
   {
      trace("NetStream.Play.Stop");
   }
   if(event.info.code =="NetStream.Play.StreamNotFound")
   {
      trace("Video Not Found");     
   }  
   if(event.info.code =="NetStream.Buffer.Full")
   {        
   }
}

function onMetaData(metadata:Object):void
{
}

Thank you for your help