[M4IF Technotes] Request for valid mp4 aac bit stream

[Ramachandran V]

Hello All,
I am in search of a valid conformance test bit stream for a mp4 GA AAC
(main). 
Plz let me know where I can find it.
Thanks in advance,
Ramachandran.
Associate Software Engineer,
Larsen & Toubro Ltd. 
Ph : 91-821-402561 Extn : 2709 (Off)
       91-821-333954 (Res)