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Re: feedback on use cases and requirements

From: Michael Hausenblas <michael.hausenblas@deri.org>
Date: Sun, 26 Jul 2009 14:06:29 +0100
To: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
CC: Media Fragment <public-media-fragment@w3.org>
Message-ID: <C6921365.6D91%michael.hausenblas@deri.org>
Silvia, 

> Since this is a use case for live streaming rather than "canned"
> content, I would suggest we add it to the section. Is that ok with
> everybody?

A big +1  

Streamed content is a big deal on the Web and we should address it. However,
dunno exactly, yet, what the implications are (gotta dig deeper, that is ;)

Cheers,
      Michael

-- 
Dr. Michael Hausenblas
LiDRC - Linked Data Research Centre
DERI - Digital Enterprise Research Institute
NUIG - National University of Ireland, Galway
Ireland, Europe
Tel. +353 91 495730
http://linkeddata.deri.ie/
http://sw-app.org/about.html



> From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
> Date: Sun, 26 Jul 2009 22:55:45 +1000
> To: Media Fragment <public-media-fragment@w3.org>
> Subject: feedback on use cases and requirements
> Resent-From: Media Fragment <public-media-fragment@w3.org>
> Resent-Date: Sun, 26 Jul 2009 12:56:41 +0000
> 
> Hi all,
> 
> I have had some discussions with a company that provides live
> streaming solutions about our media fragment addressing approaches.
> They are keen to make use of the specification for certain use cases
> that they are after.
> 
> 
> 1. A first use case that was provided is the following:
> A URL to a live video stream may look as follows
> http://www.example.com/video.ogv . It always points to the live data,
> i.e. what is transferred "now". This maps to a current clock time,
> e.g. http://www.example.com/video.ogv?t=clock:20090726T112401Z. So, if
> we require to point 5 min back into the past, the user agent can
> easily compute this backwards to e.g.
> http://www.example.com/video.ogv?t=clock:20090726T111901Z.
> 
> I think for this we may need to add to the use cases and requirements
> that we are also considering live streams. And we should add this
> particular case of pointing back 5min in time on a live stream to the
> "Browsing and Bookmarking" section,
> http://www.w3.org/2008/WebVideo/Fragments/WD-media-fragments-reqs/#uc2.
> What do people think?
> 
> 
> 2. Another example use case that was provided is the following:
> "Let¹s say you want to make an interactive Formula1 website for a live
> race, the real-time commentary page links text fragments to timeframes
> - readers can click on the text ŒAlonso accident¹ and the stream they
> are watching can jump back to the accident."
> 
> I think we can attribute that use case to the named anchors:
> http://www.w3.org/2008/WebVideo/Fragments/WD-media-fragments-reqs/#scenario4.3
> 
> Since this is a use case for live streaming rather than "canned"
> content, I would suggest we add it to the section. Is that ok with
> everybody?
> 
> 
> Best Regards,
> Silvia.
> 
Received on Sunday, 26 July 2009 13:07:13 GMT

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