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Re: ISSUE-7 (UA MF resolution): User Agent Media Fragment Resolution

From: Raphaël Troncy <Raphael.Troncy@cwi.nl>
Date: Wed, 29 Apr 2009 11:48:14 +0200
Message-ID: <49F8225E.5000108@cwi.nl>
To: Media Fragments Working Group WG <public-media-fragment@w3.org>

> ISSUE-7 (UA MF resolution): User Agent Media Fragment Resolution
> http://www.w3.org/2008/WebVideo/Fragments/tracker/issues/7
> Raised by: Michael Hausenblas On product:
> As we found in our 3rd F2F meeting in Barcelona, we need to define
> what the client (UA) should do with media fragment (segment). This is
> called "User Agent Media Fragment Resolution" or UA-MF resolution for
> short.
> The expected outcome and goal is to describe the steps necessary
> (incl. user notification, error handling) for a UA to interpret a
> media fragment and initiate the retrieval of a certain segment.

I'm not sure I understand exactly the scope of the issue you have 
raised. What do you mean by: "we need to define what the client (UA) 
should do with media fragment (segment)"?
   - Do you mean, what the UA should do the first time it comes across a 
media fragment URI (i.e. how to parse the URI and transform it into a 
HTTP request)?
   - Or do you mean, what is the whole process (i.e. single or dual 
step) that will ultimately make the UA play a media resource?
If it is the latter, then this issue is actually the description of what 
we have called so far the HTTP implementation (a bad name, I agree) 
available at 
http://www.w3.org/2008/WebVideo/Fragments/wiki/HTTP_implementation and 
that we will need to further complete/discuss once the proposal of 
Conrad is on the table.

My concern is that I'm afraid you have captured in a single issue what 
should be the media fragment spec :-) Or am I missing something?


Raphaël Troncy
CWI (Centre for Mathematics and Computer Science),
Science Park 123, 1098 XG Amsterdam, The Netherlands
e-mail: raphael.troncy@cwi.nl & raphael.troncy@gmail.com
Tel: +31 (0)20 - 592 4093
Fax: +31 (0)20 - 592 4312
Web: http://www.cwi.nl/~troncy/
Received on Wednesday, 29 April 2009 10:26:40 GMT

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