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Re: Results of the media type review regarding fragment identifier (semantics)

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Sun, 19 Apr 2009 14:56:39 +1000
Message-ID: <2c0e02830904182156mb5daeech97dd0048a17c506c@mail.gmail.com>
To: Michael Hausenblas <michael.hausenblas@deri.org>
Cc: Media Fragment <public-media-fragment@w3.org>
Interesting indeed.

I was under the impression that both MPEG7 and MPEG21 registered the
fragment syntax together with the MIME type, but obviously they
didn't. Ogg/temporal URI only has an expired I-D for this. YouTube,
Google and the other Web 2.0 sites that provide temporal media
fragment addressing just simply provide it as a feature without
registring it.

Also please note that RTP/RTSP, while specifying protocol methods for
addressing time offsets, have left the URI syntax specification to the
server, see http://www.ietf.org/rfc/rfc2326.txt (search for
"fragment"). I have just added that information to
http://www.w3.org/2008/WebVideo/Fragments/wiki/State_of_the_Art .
[Davy/Erik: you might want to add this to the WD].

I agree that we should send letters to all the stakeholders that we
have identified and encourage them to use the current specification
under development, also encouraging them to give us feedback if they
come across any issues.


On Sun, Apr 19, 2009 at 12:07 AM, Michael Hausenblas
<michael.hausenblas@deri.org> wrote:
> All,
> As of my actions [1] and  [2] regarding our ISSUE-3 I have now performed the
> review of the IANA media types registry. The question was how many media
> types in the audio-visual domain exist that define fragment identifiers and
> if so, where potential clashes with our proposed syntax/semantics exist.
> Short answer: 0.
> Long answer: see my write-up at the Wiki [3]
> I'm gonna close my actions now and move on with initiating the Test Cases.
> Cheers,
>      Michael
> [1] http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/42
> [2] http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/47
> [3] http://www.w3.org/2008/WebVideo/Fragments/wiki/MediaTypeReview
> --
> Dr. Michael Hausenblas
> DERI - Digital Enterprise Research Institute
> National University of Ireland, Lower Dangan,
> Galway, Ireland, Europe
> Tel. +353 91 495730
> http://sw-app.org/about.html
> http://webofdata.wordpress.com/
Received on Sunday, 19 April 2009 04:57:32 UTC

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