W3C home > Mailing lists > Public > public-media-annotation@w3.org > May 2009

Re: Properties for media fragment?

From: Pierre-Antoine Champin <pierre-antoine.champin@liris.cnrs.fr>
Date: Mon, 04 May 2009 22:02:42 +0100
Message-ID: <49FF57F2.4030809@liris.cnrs.fr>
To: Felix Sasaki <felix.sasaki@fh-potsdam.de>
CC: David Singer <singer@apple.com>, "public-media-annotation@w3.org" <public-media-annotation@w3.org>
Hi,

I agree with David that "my favourite scenes" is neither 'intrinsic' not
'published'. I also agree to call that 'user' metadata, and would point
out that our use case 5.6 [1] is exactly about that.

But the properties proposed by Felix are not, IMO, limited to user
generated metadata. Some videos are complex, and different fragments may
have different intrinsic or published metadata. A canonical example is a
news report, which is a composite media object comprising several parts.
Both the whole report and each part deserve theit own metadata
(intrinsic and published), but it should be possible to express the
relation between the whole and the parts.

  pa

[1]
http://www.w3.org/TR/2009/WD-media-annot-reqs-20090119/#uc-user-generated-metadata

Felix Sasaki a écrit :
> 
> 
> 2009/5/5 David Singer <singer@apple.com <mailto:singer@apple.com>>
> 
>     At 7:14  +0200 2/05/09, Felix Sasaki wrote:
> 
>         List of my favorite scences of a video, as part of the video
>         metadata? Does that not make sense?
> 
> 
>     Oh wow, this is a new category of metadata. 
> 
> 
> 
> Is it so new? At least the mechanisms listed in the media fragments
> draft seem to exist for some time. So my assumption was that the
> mechanisms are actually used, and that mapping betweeen them is useful.
> If they exist only as a new category, to be filled by the new fragment
> identifier syntax defined by the media fragments WG, than it does not
> make sense to invest time in their mapping.
> 
> Felix
> 
>  
> 
>      So far I have been seeing
> 
>     * 'intrinsic' properties of the media itself (duration, whether it
>     has video, audio etc.)
>     * published annotations for the media (copyright, title, etc.)
> 
>     both of these are 'source supplied'.
> 
>     'My favorite scenes' is user-supplied.  Hm.
> 
>  
> 
> 
>     -- 
>     David Singer
>     Multimedia Standards, Apple Inc.
> 
> 



Received on Monday, 4 May 2009 21:03:28 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Monday, 4 May 2009 21:03:29 GMT