- From: David Singer <singer@apple.com>
- Date: Wed, 20 May 2009 16:01:25 -0700
- To: public-media-annotation@w3.org
I have an action to improve the descriptions on<http://www.w3.org/2008/WebVideo/Annotations/wiki/Top_Supported_Tags> I'm not quite sure what sort of improvement I should be allowed to do, however. Let's see where I think an improvement might be indicated. For many tags: -- in what language is this expressed? Are multiple e.g. titles in different languages allowed? Enumerations: -- for tags like contributor (contribution role), genre etc.: are we planning to have a defined set of names, some extension capability, or a free-for-all? For names -- do we allow a de-referencable pointer as well as a textual name? E.g. are <http://www.sony.com> and "Sony Corporation" permitted? How do we distinguish the two, if so? For couplets (contributor, relation): -- we need to say how the pairing is done. Is this textual, e.g. {a, b}? ma:creator -- is this the 'human names' of the creator(s), or their unique IDs (e.g. URN) or de-referencable pointer (e.g. URI to their FaceBook page :-))? ma:keyword -- if there is more than one word, is it a phrase, or are they separate keywords? Do we need to say phrases are in quotes? Are keywords an 'enumerated space' (as above)? ma:duration -- someone at the meeting was arguing that this might be different from the actual media duration, but I can't remember why. If it's the actual media duration, it's a property rather than annotation. ma:spatialDimension -- we need units, and we need to know if they are uniform. I would say that the dimensions must be uniform (square grid) and that some unit must be specified (cm, inch, square-pixel, point, ...) ma:genre -- enumeration? (note typo in the 4th column, 'resrouce') ma:createDate -- can we say that this is a date as defined in ISO 8601 string format? That allows for presentation, comparison, conversion to other date systems etc. We probably don't need to care about the b.c.e issue. ma:compression -- what namespace is used to name compressors? Or is this a URI to the spec.? ma:location -- probably an ISO 6709 (Annex H) string, right? Do we want other possible additional values here (e.g. a human name, "Barcelona") etc.? ma:collection -- rather than a name, wouldn't an identifier (URN or URI) be better? ma:rating -- how is the person or organization identified? ma:targetAudience -- isn't this a triplet? e.g. "Venezuelan Board of TV Censors", "Permissible broadcast hours", "03h - 04h"? Why is rating not one of these triples? -- David Singer Multimedia Standards, Apple Inc.
Received on Wednesday, 20 May 2009 23:02:21 UTC