Youtube style buffering

Question

Is there any way to make YouTube style buffering, like when I press pause - player continues buffering till end?
But when I just open the video file - it doesn't wait till full buffer and starts playing.

Answer 1

I think I understand what you're saying.  Sounds like you want to start with a very small buffer (so that the video starts immediately), and grow the buffer over time.  What you could do is start with the default bufferTime value (which is 0.1, I believe), and then adjust the bufferTime value as the buffer fills out.  You could do this based on how much data is in your buffer (i.e. the bufferLength property), or just slowly increase bufferTime as the video plays.  Here's some sample code (caveat: I haven't run this) showing how you might do the latter:
var timer:Timer = new Timer(3000);
timer.addEventListener(TimerEvent.TIMER, onTimer);
timer.start();
function onTimer(event:TimerEvent):void
     // Only grow the buffer when we're not buffering.
     if (mediaPlayer.bufferable && !mediaPlayer.buffering)
          mediaPlayer.bufferTime += 1.0;
Every 3 seconds, the timer will fire, and the event listener will check the buffer state.  If the video isn't buffering, then it will increment the bufferTime by one.  A more advanced version of this might check MediaPlayer.bufferLength to see whether an increase of bufferTime is safe, or whether it's likely to result in the need to buffer.
One thing I should point out is that the MediaPlayer.bufferTime and MediaPlayer.bufferLength properties refer to the memory buffer, not the disk buffer.  With progressive video, the download of the video file will proceed (based on your bandwidth) regardless of these properties, and there's not much you can do to control this.
Hope this helps,
Brian