This post is to highlight the double buffering technique (also known as dynamic buffering) that "should" make video streaming in flash alot smoother without having to prebuffer anything.
This technique works on progressive video download as well as streaming:
var startBufferLength:Number= 2; //keep this in the range 2-4+
var xpandedBufferLength:Number = 15; //arbitrarily highnc = new NetConnection();
nc.connect(null);
ns = new NetStream(nc);
ns.setBufferTime(3);
ns.autoPlay = false;
ns.onStatus = Delegate.create(this, handleVideoStatus);//(if this was AS3 the syntax will be:
//ns.addEventListener(NetStatusEvent.NET_STATUS, handleVideoStatus);
// if this was Actionscript 3, this following line would be:
// private function handleStatus(event:NetStatusEvent):void
function handleVideoStatus(infoObject:Object)
{
switch (infoObject.code) {
case "NetConnection.Connect.Success":
break;
case "NetStream.Buffer.Full":
ns.bufferTime = xpandedBufferLength;
break;
case "NetStream.Buffer.Empty":
ns.bufferTime = startBufferLength;
break;
case "NetStream.Play.Start":
// the video has started playing, do something here
break;
case "NetStream.Play.Stop" :
// the video has stopped playing (finished)
break;
}
}
June 12th, 2008 at 11:43 am
what is the infoObject in your code?
What does it do?
How do you create one?
July 19th, 2008 at 7:58 pm
Great info - keep up the great work.
August 22nd, 2008 at 9:10 pm
I am experimenting with this in AS2 on a progressive video but not seeing any effect from this over a live site. Perhaps I need a very slow net connection to really test this.
September 4th, 2008 at 2:15 pm
tarik mou alil ya ibni