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Re: [W3C Media Annotation WG] Request for Expert Review (API)

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Wed, 21 Apr 2010 09:24:10 +1000
Message-ID: <v2i2c0e02831004201624vb4a70778ncf996bfb3363a7bc@mail.gmail.com>
To: Eric Carlson <eric.carlson@apple.com>
Cc: Pierre-Antoine Champin <pierre-antoine.champin@liris.cnrs.fr>, "Chris.Poppe@ugent.be" <Chris.Poppe@ugent.be>, "public-media-annotation@w3.org" <public-media-annotation@w3.org>
On Wed, Apr 21, 2010 at 1:26 AM, Eric Carlson <eric.carlson@apple.com> wrote:
> On Apr 19, 2010, at 4:06 PM, Silvia Pfeiffer wrote:
>> On Tue, Apr 20, 2010 at 1:47 AM, Eric Carlson <eric.carlson@apple.com> wrote:
>>> Silvia -
>>> On Apr 19, 2010, at 7:47 AM, Silvia Pfeiffer wrote:
>>>>> As for the language attribute, it will not always be the case that a
>>>>> metadata source will use a single language for all its properties. For
>>>>> example, an RDF file may contain :
>>>>> <video.ogg> dc:title
>>>>>  "Planet of the apes"@en,
>>>>>  "La plančte des singes"@fr .
>>>>> So you can't really escape the per-value language attribute, can you?
>>>> Generally, you will not get a mixed language metadata file. I don't
>>>> know where you take your example from. I am following general practice
>>>> in libraries and other institutes that create metadata and they will
>>>> keep metadata descriptions for the same media resource separate as
>>>> much as possible. You can, of course, make up a metadata format that
>>>> can have multiple mixed language annotations, but I am finding those
>>>> rather unusable and am not sure we should be supporting it in the API.
>>>  This is *definitely* not an artificial use case. As I have noted before, both QuickTime and MPEG-4 files support multiple metadata values with the same key.This feature is definitely used to include multiple localizations of metadata in movie files.
>> Would they be in the same track or in different tracks?
>  Both are possible. QuickTime and MPEG-4 meta data metadata can also be associated with the movie itself, which signals that it applies to everything in the movie.
>  Multiple metadata values with the same key are allowed no matter which part of a movie metadata is associated with.
> eric

Ok, reality beats me. I still don't think it's good design, but it
seems there are enough annotations out there that mix multiple
metadata values of different languages in the same key.

Received on Tuesday, 20 April 2010 23:25:03 UTC

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