[M4IF Technotes] iods & 3GPP

[Dave Singer]

At 10:18 -0600 9/3/02, Richard Shields wrote:
>Giuliano,
>
>
>
>The 3GPP spec that I have states that "MPEG-4 system architectural 
>elements (e.g. BIFS scene description tracks or OD Object 
>descriptors) are optional and shall be ignored." (clause 9.2.4).

It's no longer mandatory in the ISO spec, by the way, as MP4 files 
can be the target of an ES URL, or the target of a data-reference, 
even in the mpeg-4 context.
But yes, these elements aren't used by or needed in the 3G spec.
>
>
>
>-Richard
>
>
>
>-----Original Message-----
>From: Catrambone Giuliano [mailto:Giuliano.Catrambone   h3g.it]
>Sent: Tuesday, September 03, 2023 8:46 AM
>To: technotes   lists.m4if.org
>Subject: [M4IF Technotes] iods & 3GPP
>
>
>
>Hi,
>
>     I know that the iods atom is mandatory in ISO spec.
>
>     Do you know if the iods atom is mandatory in the 3GPP?
>
>
>
>         giuliano
>
>
>
>    

-- 
David Singer
Apple Computer/QuickTime
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