[Mp4-tech] Re: about the AudioMuxElement() Byte Aligned

[Ralph Sperschneider]

ѧ wrote:
>  
> Dear ralph,
>  
>
> I have a question about the AudioMuxElement() in LATM format in 
> ISO/IEC 14496-3:2005.
>
> In the syntax of AudioMuxElement(), if the useSameStreamMux = 1, in 
> this case before the PayloadLengthInfo(), it's not Byte Aligned. Then 
> we must shift the bits of frames in PayloadMux() to the end of 
> AudioMuxElement(). Obviously, It's
>
> inefficiency. Anybody who can tell me how to solve it?
>
> BTW, who knows which players can play the LATM format audio data?
>
> Thank you in advance,
>
> yelite
>
>  

Dear Yelite,
the reported issue is known. A (non-backwards-compatible) fix has 
already been prepared (N7691, "Proposed corrections to syntax of LATM 
version 1", October 2005), but it has not yet incorporated into the 
reference software. This incorporation would however be necessary to put 
the fix in the standard. Hence, if you feel that this is an important 
issue and thus like to contribute to the reference software, please let 
me know.
Best regards,
Ralph
-- 
Dipl.-Ing. Ralph Sperschneider  | Phone: +49 9131 776 344
Fraunhofer IIS                  | Fax:   +49 9131 776 398
Am Wolfsmantel 33               | mailto:ralph.sperschneider iis.fraunhofer.de
D 91058 Erlangen                | http://www.iis.fraunhofer.de/amm/