[SOLVED] My flex application cannot play a RTMFP stream. NetStream.Play.Failed error

My flex application cannot play a RTMFP stream. NetStream.Play.Failed error

Years ago, I created a SWF application that enabled users to perform online video chat. It used simple SMTFP publish/play method to stream video. Now a few years passed and i am trying to create a backward compatible SWF application.

My problem status:

New version fails to play the streams that are published from the old swf. It connects to server and to the publisher, but it cannot play and gives the NetStream.Play.Failed error.
New version plays the streams that are published from its own version.
Online players like in this guide can play my new version, but they are unable to play streams from my old version.

I tried it with different SDKs (3.6, 4.1, 4.6) and they all fail to play the old swf streams.

I searched the web for the error and documents don't clear anything and they are just saying that it is a general error. There is question in SO that could be related, but it has no answers.

Does anyone know the reason? or any suggestions?

Solution

I found the problem. It seems like the flash player has changed RTMFP protocol in 11.1 version. There is not much documentation about it and as far as i can understand, I should either upgrade all the flash players or I should upgrade all of the old applications to flex 4 sdk.