public bufferLength : Number [read-only]

The number of seconds of data currently in the buffer. You can use this property in conjunction with NetStream.bufferTime to estimate how close the buffer is to being full--for example, to display feedback to a user who is waiting for data to be loaded into the buffer.

Availability

ActionScript 1.0; Flash Player 7

Example

The following example dynamically creates a text field that displays information about the number of seconds that are currently in the buffer. The text field also displays the buffer length that the video is set to, and percentage of buffer that is filled.

this.createTextField("buffer_txt", this.getNextHighestDepth(), 10, 10, 300, 22);
buffer_txt.html = true;

var connection_nc:NetConnection = new NetConnection();
connection_nc.connect(null);
var stream_ns:NetStream = new NetStream(connection_nc);
stream_ns.setBufferTime(3);
my_video.attachVideo(stream_ns);
stream_ns.play("video1.flv");

var buffer_interval:Number = setInterval(checkBufferTime, 100, stream_ns);
function checkBufferTime(my_ns:NetStream):Void {
    var bufferPct:Number = Math.min(Math.round(my_ns.bufferLength/my_ns.bufferTime*100), 100);
    var output_str:String = "<textformat tabStops='[100,200]'>";
    output_str += "Length: "+my_ns.bufferLength+"\t"+"Time: "+my_ns.bufferTime+"\t"+"Buffer:"+bufferPct+"%";
    output_str += "</textformat>";
    buffer_txt.htmlText = output_str;
}