[M4IF Technotes] Is standard conform to put mp3 sound in a MPEG-4 stream ?

[Dave Singer]

At 11:28 +0200 8/21/02, Remigijus wrote:
>Hi All
>
>I would like to ask: Is standard conform to put mp3 sound in a MPEG-4 stream:
>
>I've created mp4 file with mp4creator (MPEG4IP) with mp3 sound track 
>inside. When I'm playing this file with QuickTime 6 It generates 
>Error message:
>
>
>
>"File Contains invalid audio data:
>
>An audio Decoder Configuration descriptor  corrupted.
>
>Expected ObjectType = Audio(0x40); found object type ^0 instead."
>
>
>
>Does it means that QuickTime doesn't supports mp3 sound inside 
>mp4 or something else.
>
>

Well yes, it does mean that QT6 doesn't do layer 3 in MP4.  QT6 
supports a few profiles in MP4, and we currently don't cover the 
'old' formats (MPEG1 and MPEG2) in an MP4 context.
I'd be curious to know, however, if we have the same understanding of 
the structures which would say "this is layer3 audio".  can you 
briefly summarize your understanding of the profile, level, 
streamtype, objecttype,  decoderspecificinfo, and access unit format?
-- 
David Singer
Apple Computer/QuickTime
-------------- next part --------------
An HTML attachment was scrubbed...
URL: /pipermail/mp4-tech/attachments/20020821/8edda840/attachment.html