[MPEGIF Discuss] mpeg-j question

[Mikael Bourges-Sevenier]

Hello,
          I am Vidhya Balasubramanian, a Phd student. I have been working on
an MPEG-4 based implementation and I have some questions regarding MPEG-J. I
would be glad if you can provide me information regarding this.
        1. Using the open source MPEG-J api's at ISO , the mpeg-j stream was
only compiled using the bif enc and MUX. Hence the output was a .trif file.
Is there a way to directly generate a MP4 file instead of a .trif file. I am
not able to figure out how to do this.
[Mikaël Bourges-Sévenier] 
You should use mp4enc rather than mux. It will write Jar files into the mp4
file format.
      2. If I use the .bt format and use the MP4 tool at ENST, how do I
include a java stream to the mpeg-4 stream. 
[Mikaël Bourges-Sévenier] 
Convert .bt file format to IM1 file format. There are almost the same for
the scene description but the object descriptor section is a bit different,
see the examples for MPEG-J in Test/MPEG-J directory.
With IM1, you need 2 files: one for the scene description, which would be
used by BifsEnc and one file for object descriptor which is used by mux or
mp4enc (these files typically ends with .scr extension). It is in the scr
files that you describe MPEG-J stream, see the samples in Test/MPEG-J
directory.
Kind regards,
Mike 
Thanks a lot
Regards
Vidhya
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