[Mp4-tech] Re: [audio] Encoding with Error resilence (ERAACLC)

[Ralph Sperschneider]

Dattaguru B.N wrote:
> Hi,
> I am talking about ISO encoder set up for AAC LC.
> Now I want to set up ISO AAC LC encoder with ER support.
> I found that ER source code is in aacErrRobTrans, but how
> to include this into the AAC LC encoder workspace.  I feel
> without adding these files, I will not be able to encode audio
> with ER support for AAC LC.
> Thanks
> Datta

Hi,
you cannot simply combine the code available in the direcectory aacErrRobTrans 
with the encoder code. As the name suggests, it is a transcoder. So it might be 
possible to first encode your audio data to AAC LC and than to transcode it to 
ER AAC LC. You might however run into trouble with regard to the file formats: 
The transcoder accepts only raw (headerless) data, and writes only raw data.
I have some doubts whether the reference encoder provides raw data and the 
reference decoder reads raw data.
Hope this helps,
Ralph
-- 
Dipl.-Ing. Ralph Sperschneider  | Phone: +49 9131 776 344
Fraunhofer IIS                  | Fax:   +49 9131 776 398
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