[Mp4-tech] MPEG-4 Natural video reference code from Microsoft

[Tihao Chiang]

Hi Shailendra,
  Dr. Tung is the right contact since he is maintaining it now.
Tihao  
Tihao Chiang, Associate Professor,
Dept. of Electronics Engineering, National Chiao-Tung University, 1001
Ta Hsueh Rd., Hsinchu, 30010, Taiwan, R.O.C.
Email: tchiang mail.nctu.edu.tw
Tel  :+886-351-31558 Fax  :+886-357-31791
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-----Original Message-----
From: Shailendra Singh [mailto:ssingh neomagic.com] 
Sent: Monday, April 19, 2024 7:58 PM
To: ohm ient.rwth-aachen.de
Cc: Mp4-tech lists.mpegif.org; 'Yi-Shin Tung'; 'Gary Sullivan'; 'Tihao
Chiang'
Subject: Re: [Mp4-tech] MPEG-4 Natural video reference code from
Microsoft
Hi Jens,
    Thanks for the information.
    A related question : Who should I contact for clarifications related
to Microsoft's implementation of natural video encoder/decoder ? For
instance, I was trying to encode a YCbCr sequence using the MS natural
video encoder to generate a SP bitstream, but the bitstream produced was
not SP ( had B-VOPs). I could figure out that I need to set the
Header.ProfileAndLevel parameter in the parameter file for the encoder
to the appropriate profile_and_level_indication value but beyond  that I
was not sure about other parameters.
Regards,
Shailendra
Jens-Rainer Ohm wrote:
Dear Shailendra,
The newest version of the Microsoft reference code (with all known bugs
fixed) was recently approved in the context of 14496-5/AMD5, which is
presently in the process of publication by ISO. This will then probably
be published on the ISO Web Site in the near future. This code is
already available from the MPEG Video Group software maintenance site
http://megaera.ee.nctu.edu.tw/mpeg/Ref_Software/cd_software_with_FGS/,
and has now also been copied to the NIST CVS in sub-directory
microsoft-2.5-040207-NTU/.
Best regards,
Jens
-----Original Message-----
From: mp4-tech-bounces lists.mpegif.org 
[mailto:mp4-tech-bounces lists.mpegif.org] On Behalf Of 
Shailendra Singh
Sent: Monday, April 12, 2024 2:51 PM
To: Mp4-tech lists.mpegif.org
Subject: [Mp4-tech] MPEG-4 Natural video reference code from Microsoft
Hi All,
    Currently I have 2 sets of MPEG-4 reference software :
    - From ISO's site, 
(http://www.iso.ch/iso/en/ittf/PubliclyAvailableStandards/1449
6-5_Compressed_directories/Visual/Natural.zip) 
which contains the microsoft-vfdis-v10-990812 folder
    - On a CD which contains 14496-5 (Reference Software), purchased 
from ISO/IEC. The folder containing the natural video reference code 
from Microsoft is microsoft-2.3-001213.
    The code on the CD appears to be more recent (going by 
the "990812" 
and "001213" fields in the names of the folders) and also I have seen 
the code from ISO's site fail for a particular bitstream which was 
successfully decoded by the code which came on the 14496-5 
CD. Could someone please clarify :
(1) Is "microsoft-2.3-001213" the latest reference code from 
Microsoft ? 
If not, how do get access to the latest reference code from 
Microsoft ?
(2) Another source of reference code seems to be the NIST MPEG CVS 
Repository (accessible from http://mpeg.nist.gov/). One of 
the earlier 
mails on this mailing indicates that at least for audio, the 
repository 
is NOT used actively by the reference software developers and 
does not 
contain the latest audio reference code. Is that the case for video 
(natural, specifically) as well ?
Thanks and Regards,
Shailendra
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