[Mp4-tech] [Audio] HE-AAC ISO Reference Software Organization

Veerabharathi veerabharathi_v yahoo.com
Wed Jan 10 01:25:44 ESTEDT 2007


Hello all,
  I have both 3gpp code and the ISO Code.which one do i use for decoding HE-AAC streams?? 3gpp code takes in only files with *.3gp extension...
  and with ISO Code I am not very sure of the input options to the decoder. Can somebody please help me out in this regard..?
  Thanks & Regards,
  Veerabharathi
Andreas Schneider <Andreas.Schneider codingtechnologies.com> wrote:
  Hello Devilal,
actually mp4mcDec is older, but it is perfectly safe to use this as 
reference for HE AAC and HE AAC v2 decoders.
The next release of the reference software will have support for PS in the 
mp4AudVm_Rewrite decoder as well.
Regards,
Andreas
mp4-tech-bounces lists.mpegif.org wrote on 09.01.2024 10:10:06:
> Hi,
> In the HE-AAC ISO reference software, there are 3 folders with 
> decoder workspaces i.e. mp4AudVm, mp4AudVm_Rewrite and mp4mcDec.
> 
> We were using mp4AudVm_Rewrite as a reference for our AAC-LC 
> development but it is not working for PS decoding when we started on
> to HE-AAC. On the other hand, mp4mcDec is working fine for PS and 
> SBR decoding. 
> What is difference between the two folders ? Is there a difference 
> in the development stages like mp4mcDec is a newer version or so ??
> 
> 
> 
> Regards,
> Devilal 
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--
Andreas Schneider
Senior Research Engineer
mailto:snd CodingTechnologies.com
+49 911 92891 -26 (phone)
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Coding Technologies GmbH
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D-90429 Nuernberg, Germany
http://www.codingtechnologies.com
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