Looking for a way to netStream.hasVideo()

Hi, I’m trying to do some live broadcasting from user webcams and microphones. It goes more less this way:


camera = Camera.get()
microphone = Microphone.get()

if( camera != null && !camera.muted )
netStream.attachVideo(camera);

if( microphone != null && !microphone.muted )
netStream.attachAudio(microphone);

netStream.publish("mystream", "live");

Now clients subscribe to the stream using:


clientnetStream.play("mystream");
mc.attachMovie(clientnetStream);

The question is, how can i check whether incoming stream has only audio part or both audio/video part available (so i can display an icon to indicate the incoming stream is audio only) ?