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Re: minutes of 2009-09-17 F2F meeting, Day 1

From: RaphaŽl Troncy <Raphael.Troncy@cwi.nl>
Date: Fri, 18 Sep 2009 09:12:28 +0200
Message-ID: <4AB332DC.9010508@cwi.nl>
To: Conrad Parker <conrad@metadecks.org>
CC: Media Fragment <public-media-fragment@w3.org>, Jack Jansen <Jack.Jansen@cwi.nl>, Yves Lafon <ylafon@w3.org>
Dear all,

>>  - We agree on the respective role of '#' and '?'. The border will be
>> whether a transcoding process will be needed or not on server side to
>> satisfy the request.
> I recall that we simply agreed that both syntaxes are useful and
> within scope for MFWG.
> We didn't pass any resolutions along the lines of "if not transcoding,
> MUST/SHOULD use syntax X, otherwise MUST/SHOULD use syntax Y" (and I
> don't think we should mandate such a distinction).

Amendment validated. Indeed, my phrasing "We agree on the respective 
role of '#' and '?'" is (purposely) vague. I also think we should not 
mandate such distinction. I can see 3 (working) cases (among many others 
that will generate different behavior):
   - UA send a media fragment request with a hash (e.g. temporal 
dimension), the server can satisfy the range request (without 
transcoding) and generate a response as expected.
   - UA send a media fragment request with a hash (e.g. spatial 
dimension), the server would need to transcode to serve it. We _might_ 
mandate that in this case, it does not serve a fragment but the whole 
resource and let the UA decides what to do with the fragment part
   - UA send a media fragment request with a query, and we don't care 
anymore if a transcoding operation is necessary or not, the server will 
serve a new resource, with optionally? a link header pointing to the 
parent resource.

Do we agree on that?


RaphaŽl Troncy
EURECOM, Multimedia Communications Department
2229, route des CrÍtes, 06560 Sophia Antipolis, France.
e-mail: raphael.troncy@eurecom.fr & raphael.troncy@gmail.com
Tel: +33 (0)4 - 9300 8242
Fax: +33 (0)4 - 9000 8200
Web: http://www.cwi.nl/~troncy/
Received on Friday, 18 September 2009 07:13:21 UTC

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