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Re: minutes of 2011-05-11 teleconference

From: Davy Van Deursen <davy.vandeursen@ugent.be>
Date: Fri, 27 May 2011 09:43:34 +0200
Message-ID: <4DDF5626.3090709@ugent.be>
To: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
CC: Media Fragment <public-media-fragment@w3.org>, RaphaŽl Troncy <raphael.troncy@eurecom.fr>
On 18/05/2011 9:21, Silvia Pfeiffer wrote:
> 2011/5/18 Davy Van Deursen<davy.vandeursen@ugent.be>:
>> Silvia,
>>
>> On 18/05/2011 3:18, Silvia Pfeiffer wrote:
>>>
>>> Nice work!
>>>
>>> I've spotted some remaining occurrences of "id":
>>> section 5.2.3:
>>>    Accept-Ranges: bytes, t, track, id
>>>
>>> section 6.2.1
>>>    (i.e., t, xywh, track, and id)
>>
>> Thanks for catching these, I will correct them.
>>
>>> Further on a note that Davy put into 4.2.3 Track Dimension:
>>> "We can also reference the HTML5 Media Multitrack API here, when it's
>>> mentioned in the HTML5 spec. "
>>> ->    yes, we absolutely should
>>> Do you want me to formulate an example?
>>
>> Yes, please do!
>>
>>> Finally about section 5.2.3 Server triggered redirect:
>>> can I suggest that instead of dropping it we re-set the example to use
>>> "chapters", because that would explain exactly how they are done?
>>
>> Do you mean something like:
>>
>> GET /video.ogv HTTP/1.1
>> Host: www.example.com
>> Accept: video/*
>> Range: chapter=chapter1
>>
>> results in
>>
>> HTTP/1.1 307 Temporary Redirect
>> Location: http://www.example.com/video.ogv#t=10,20
>> Accept-Ranges: bytes, t, chapter
>> Content-Length: 0
>> Content-Type: video/ogg
>> Link:<http://www.example.com/video.ogv#chapter=chapter1>;rel="fragment"
>> Vary: *
>
>
> Yes, I wonder if that would be useful. Admittedly I haven't thought
> through it fully.
>
>
>> ? (Also, I'm not sure 'fragment' is in this case the right relationship
>> naming for the Link header ...)
>
> Yeah... I don't know. I was just trying to start thinking through how
> we would resolve a chapter link so that it results in a time link and
> can eventually be mapped to byte ranges.

I committed a proposal for the retrieval of chapter fragments, using a 
redirect (see section 5.2.3 [1]). Comments are welcome and should be 
discussed in the following phone conf.

Best regards,

Davy

[1] 
http://www.w3.org/2008/WebVideo/Fragments/WD-media-fragments-spec/#server-triggered-redirect

-- 
Davy Van Deursen

Ghent University - IBBT
Department of Electronics and Information Systems - Multimedia Lab
URL: http://multimedialab.elis.ugent.be/dvdeurse
Received on Friday, 27 May 2011 07:43:57 UTC

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