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RE: Comparison of TT and MAWG Metadata Properties

From: Philippe Le Hegaret <plh@w3.org>
Date: Wed, 09 Sep 2009 17:02:52 -0400
To: "Bailer, Werner" <werner.bailer@joanneum.at>
Cc: Glenn Adams <gadams@xfsi.com>, "public-tt@w3.org" <public-tt@w3.org>, "public-media-annotation@w3.org" <public-media-annotation@w3.org>
Message-Id: <1252530172.4314.36.camel@chacal>
On Tue, 2009-06-30 at 13:17 +0200, Bailer, Werner wrote:
> > You might find it interesting 
> > to review Table K-1 [1] to see the source derivation of the 
> > ttm:* element vocabulary. As you can see, it is based in part 
> > on SVG (by direct reuse) and MPEG-7 (by conceptual reuse). 
> Thanks for this hint. Looking a the table it states that ttm:actor is derived from mpeg7:Creator and ttm:agent from mpeg7:Agent. mpeg7:Agent is quite generic and used in different contexts. If I understand this correctly, ttm:actor[@type='character'] maps to mpeg7:Creator/Character, and  ttm:actor[@type!='character'] maps to mpeg7:Creator/Agent. In addition we know that if an Agent is referenced by a Character, mpeg7:Creator/Role is "actor".
> What was the reason for not including an attribute/element for specifying other roles than actor, e.g. director, composer, ... ?


there was no requirement to have an element to indicate composer,
director, etc, and that can be handled by private metadata. Thus, we
didn't add them in the specification.

Received on Wednesday, 9 September 2009 21:03:05 UTC

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