[Mp4-tech] Specification for bt format?

[Peng Zhai]

Hi all,
I am working on a package to parse bt files (mp4tool textural output from 
mp4 files). Could anybody tell me if there is a description/specification 
for the InitialObjectDescriptor section? I wanna learn more about it so I 
could parse it. Also, is there any tool to convert mp4 files to xmt format, 
except IBM's tools? Thanks a lot.
Hava a good day!
Andy P. Zhai
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        ,
     -   \O              ,  .-.___
   -     /\            O/  /xx\XXX\
-    __/\ `           /\  |xx|XXX|
     `    \, ()       ` << |xx|XXX|
^^^^^^^^`^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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