Upload in Flash 8 Help needed

I got this source below from (http://www.flash-db.com/Tutorials/upload/),


My question :Why am I not able to upload video files or movies - I don’t see anything ristricting size. It act as if it uploaded the file, butnothing shows up.

I changed the filters… Please help

//Allow this domain
System.security.allowDomain(“http://localhost/”);
import flash.net.FileReference;
// The listener object listens for FileReference events.
var listener:Object = new Object();

// When the user selects a file, the onSelect() method is called, and
// passed a reference to the FileReference object.
listener.onSelect = function(selectedFile:FileReference):Void {
//clean statusArea and details area
statusArea.text = details.text = “”
// Flash is attempting to upload the image.
statusArea.text += "Attempting to upload " + selectedFile.name + "
";
// Upload the file to the PHP script on the server.
selectedFile.upload(“upload.php”);
};

// the file is starting to upload.
listener.onOpen = function(selectedFile:FileReference):Void {
statusArea.text += "Uploading " + selectedFile.name + "
";
};
//Possible file upload errors
listener.onHTTPError = function(file:FileReference, httpError:Number):Void {
imagePane.contentPath = “error”;
imagePane.content.errorMSG.text = "HTTPError number: “+httpError +”
File: "+ file.name;
}

listener.onIOError = function(file:FileReference):Void {
imagePane.contentPath = “error”;
imagePane.content.errorMSG.text = "IOError: "+ file.name;
}

listener.onSecurityError = function(file:FileReference, errorString:String):Void {
imagePane.contentPath = “error”;
imagePane.content.errorMSG.text = "SecurityError: “+SecurityError+”
File: "+ file.name;
}

// the file has uploaded
listener.onComplete = function(selectedFile:FileReference):Void {
// Notify the user that Flash is starting to download the image.
statusArea.text += “Upload finished.
Now downloading " + selectedFile.name + " to player
“;
//Show file details
details.text = “”
for(i in selectedFile) details.text +=”<b>”+i+":</b> “+selectedFile*+”
"
// Call the custom downloadImage() function.
downloadImage(selectedFile.name);
};

var imageFile:FileReference = new FileReference();
imageFile.addListener(listener);

uploadBtn.onPress = uploadImage;
imagePane.addEventListener(“complete”, imageDownloaded);

// Call the uploadImage() function, opens a file browser dialog.
function uploadImage(event:Object):Void {
imageFile.browse([{description: “Media Files”, extension: “.jpg;.gif;.png;.mov;.rm;.wmv;*.swf”}]);

}

// If the image does not download, the event object’s total property
// will equal -1. In that case, display am error message
function imageDownloaded(event:Object):Void {
if(event.total == -1) {
imagePane.contentPath = “error”;
}
}

// show uploaded image in scrollPane
function downloadImage(file:Object):Void {
imagePane.contentPath = “./files/” + file;
}

stop()