Preloader only fills 1/2 way before the video starts

Question

I am very new to Flash CS4, however I was able to create a preloader with help from a Dan Carr tutorial.
Here is my source:
import fl.video.*;
import fl.controls.ProgressBarMode;
// Set Variables
var flvControl = display;
var flvSource = "op.flv";
// Create event handler functions to control the progressbar
function progressHandler(event:VideoProgressEvent):void
   var bl = Math.round(event.bytesLoaded/1000);
   var bt = Math.round(event.bytesTotal/1000);
   // Update progress...
   pb.setProgress(bl,bt);
function readyHandler(event:VideoEvent):void
   // Remove progressbar when we start playing...
   removeChild(pb);
// Set progress bar state
pb.mode = ProgressBarMode.MANUAL;
pb.indeterminate = false;
// Add listeners and load the video
flvControl.addEventListener(VideoProgressEvent.PROGRESS, progressHandler);
flvControl.addEventListener(VideoEvent.READY, readyHandler);
flvControl.source = flvSource;
Here is an example of the video:
http://orthopreferred.us/test/ortho/op1.html
The movie loads and plays but the preloader only loads part of the way. How would I go about having the preloader progress bar load all the way then have the movie start?
Thanks!

Answer 1

I have tried your code change and the progress bar still does not completely load. It goes just a bit the the video appears.
I edited the fla to this (see bold):
import fl.video.*;
import fl.controls.ProgressBarMode;
// Set Variables
var flvControl = display;
var flvSource = "op.flv";
// Create event handler functions to control the progressbar
function progressHandler(event:VideoProgressEvent):void
   var bl = Math.round(event.bytesLoaded/1000);
   var bt = Math.round(event.bytesTotal/1000);
   // Update progress...
   pb.setProgress(bl,bt);
function readyHandler(event:VideoEvent):void
   // Remove progressbar when we start playing...
   removeChild(pb);
// Set progress bar state
pb.mode = ProgressBarMode.MANUAL;
pb.indeterminate = false;
// Add listeners and load the video
flvControl.autoPlay=false;
flvControl.addEventListener(VideoProgressEvent.PROGRESS, progressHandler);
flvControl.addEventListener(VideoEvent.READY, readyHandler);
flvControl.source = flvSource;
flvControl.play();
//end
Progress bar barely moves then the movie appears and plays.
See example:  http://orthopreferred.us/test/ortho/op1.html
My fla can be downloaded here: http://orthopreferred.us/test/ortho/op1.fla