[Mp4-tech] AAC header in MP4 file format

[Baby Reeja Jayan]

try http://www.iso.ch/iso/en/ittf/PubliclyAvailableStandards
<http://www.iso.ch/iso/en/ittf/PubliclyAvailableStandards/> /
hope this wrks
reeja
-----Original Message-----
From: china_fog 163.com [mailto:china_fog 163.com]
Sent: Thursday, August 07, 2023 3:24 PM
To: mp4-tech lists.mpegif.org
Subject: Re: RE: [Mp4-tech] AAC header in MP4 file format
Trevor
   can you tell me where i can find ISO/IEC 14496-12 and 14?
  THX
  Rgds
huming
> Huming,
>  
> Mp4 is the iso file format for containing mpeg-4 streams. For
> definitions of moov and mdat you have 
> to refer to ISO/IEC 14496-12 and 14. After you read these two documents,
> you should be able to decode the "00 02 6a dc 6d 64 61 74 c0 11 a5 02
> 60..." yourself. 
> 00 02 6a dc : size of atom mdat
> 6d 64 61 74 : ascii code!  of "mdat"
> c0 11 a5 02 60 ...... : real data of mdat atom.
>  
> Hope this helps.
>  
> Rgds,
> Trevor
>  
> 
> -----Original Message-----
> From: mp4-tech-bounces lists.mpegif.org
> [mailto:mp4-tech-bounces lists.mpegif.org] On Behalf Of CzCt
> Sent: Thursday, August 07, 2023 8:35 AM
> To: mp4-tech lists.mpegif.org
> Subject: Re: [Mp4-tech] AAC header in MP4 file format
> 
> 
> hi,all
>    What is the MP4 file format(include the audio and video)?
>    what are the ATOM,such&nb! sp;as "moov","mdata", represente! d by in
the
> stream?
>    I found with the MP4 file format streams that i have, that the first
> HEX datas
>  are "00 02 6a dc 6d 64 61 74 c0 11 a5 02 60 ...........".
>    can you tell me what it means? 
>    regards
>    huming
> 
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