[Mp4-tech] RE: how to decode audioMuxElements

Ralph Sperschneider ralph.sperschneider iis.fraunhofer.de
Fri Feb 6 19:32:59 EST 2004


Wenjun Zheng wrote:
> Hi,
> 
> We stream MPEG4 movies from an ISMA server, the audio is AAC or MP3.  We are
> developing our own client.  In the audio RTP packets, we saw some extra
> bytes were added in front of the AAC/MP3 packet(s).  I guess they are the
> audioMuxElements refered in "RFC 3016:  RTP Payload Format for MPEG-4
> Audio/Visual".  Can someone point to me where I can find the details about
> the terms such as audioMuxElement, muxConfigPresent, StreamMuxConfig, and so
> on?
> 
> Thank you in advance for your help.
> 
> Best,
> 
> -Wenjun
> 
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Dear Wenjin,
it looks if you would refer to the LATM header. LATM is specified in ISO/IEC
14496-3.
Best regards,
Ralph
-- 
Dipl.-Ing. Ralph Sperschneider  | Phone: +49 9131 776 344
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