FLVPlayback source with query strings (parameters) doesn't load

Question

Flash version: CS4
AS version: AS3
I'm currently trying to use the FLVPlayback component and pass a source FLV that's living on a cloudfront webserver. The problem is that the cloudfront requires authentication in the form of query strings in the source FLV. For example:
import fl.video.*;
var mainMovie:FLVPlayback = new FLVPlayback();
mainMovie.source = "http://www.somedomainname.com/firmware.flv?dummyquery=22";
trace(addChild(mainMovie));
As soon as I take away the "dummyquery", it works fine. When I add a query string, it breaks (nothing loads).
Here is the error output I get:
[object FLVPlayback]
VideoError: 1005: Invalid xml: URL: "http://www.somedomainname.com/firmware.flv?dummyquery=22&FLVPlaybackVersion=2.1" No root node found; if url is for an flv it must have .flv extension and take no parameters
     at fl.video::SMILManager/http://www.adobe.com/2007/flash/flvplayback/internal::xmlLoadEventHandler()
     at flash.events::EventDispatcher/dispatchEventFunction()
     at flash.events::EventDispatcher/dispatchEvent()
     at flash.net::URLLoader/onComplete()
It adds on "&FLVPlaybackVersion=2.1" to the end.
I saw a different article that said I should add a dummy variable at the end like "&dummy=.flv" because I was told that Flash is basically looking for an .flv extension at the end and you can trick it, but it doesn't work because they add on additional code.
Does anyone know how to work around this?

Answer 1

Hey supervu,
I know you already found a workaround to make this work, just figured I'd post an alternative to editing the FLVPlayback compoent. I also am retrieving an FLV file via a .Net ASHX file. To keep both worlds happy, I used a URLRewriter module to translate for me... this one translates what I am using for the FLVPlayback component source:
http://domain.com/flv/22.flv  to be resolved as http://domain.com/API/resource.ashx?ID=22
There is of course no flv folder in the root of my application...
Here is my very simple URLRewriter class in vb.net:
Imports Microsoft.VisualBasic
Imports System
Imports System.Web
Public Class URLRewriter
    Implements IHttpModule
    Public Sub Init(ByVal inst As System.Web.HttpApplication) Implements System.Web.IHttpModule.Init
        AddHandler inst.BeginRequest, AddressOf Me.OnBeginRequest
    End Sub
    Public Sub OnBeginRequest(ByVal app As Object, ByVal e As EventArgs)
        Dim inst As HttpApplication = CType(app, HttpApplication)
        Dim req_path As String = inst.Context.Request.Path
        Dim trans_path As String = ""
        Dim search As String = "/flv/"
        Dim pos As Integer = req_path.IndexOf("/flv/")
        If pos > -1 Then
            Dim key as string = req_path.Substring(pos + search.Length, (req_path.LastIndexOf(".flv") - (pos + search.Length)))
            HttpContext.Current.Response.Redirect("~/API/resource.ashx?ID=" & key )
        End If
    End Sub
    Public Sub Dispose() Implements System.Web.IHttpModule.Dispose
    End Sub
End Class
and make sure you add this to your web.config.. this will cause URLRewriter to intercept all HTTP requests, and redirect as needed.
<system.web>
     <httpModules>    
          <add name="URLRewriter" type="[Namespace].URLRewriter"/>
      </httpModules>
</system.web>
Hope this helps someone.