[uf-new] hAudio duration syntax

[Scott Reynen]

On Oct 15, 2007, at 11:34 AM, Manu Sporny wrote:

> I also couldn't find it in the ISO-8601 specification (page 31 and  
> 32):
>
> http://isotc.iso.org/livelink/livelink/4021199/ISO_8601_2004_E.zip? 
> func=doc.Fetch&nodeid=4021199

I didn't realize the actual ISO spec was available for free.  Section  
4.4.3.3 of that document covers the "Alternative Format" for duration  
mentioned in Wikipedia:

> The complete representation of the expression for duration in the  
> alternative format is as follows:
> Basic format: PYYYYMMDDThhmmss or PYYYYDDDThhmmss
> Extended format: PYYYY-MM-DDThh:mm:ss or PYYYY-DDDThh:mm:ss

That section also includes several references to other sections  
defining date and time formats, including "reduced accuracy" formats  
(i.e. removing segments with values of zero).  So I believe "PT04:46"  
is a valid ISO 8601 duration.

--
Scott Reynen
MakeDataMakeSense.com