W3C home > Mailing lists > Public > public-media-fragment@w3.org > July 2009

Re: ACTION-76 : Question if MPEG-21 Part 17 got registered on IANA as a media mime type for fragments

From: Michael Hausenblas <michael.hausenblas@deri.org>
Date: Mon, 13 Jul 2009 12:02:53 +0100
To: David Singer <singer@apple.com>
CC: Media Fragment <public-media-fragment@w3.org>
Message-ID: <C680D2ED.6599%michael.hausenblas@deri.org>
David,

> mpeg-4 and mpeg-21 chose to take the route that the mime registration
> was merely a registration, a pointer from the code point (the mime
> type) to the spec.  Is that a problem?

Honestly, I'm not in the position to tell if this is a problem, however,
when I did my review [1] I implicitly was working under this assumption,
yes.

Anyway, I think we are on the safe side, as the original question was about
frag IDs in audio/*, image/*, and video/*' and we learned that MPEG21 has
not registered anything there (but only in their own application/mp21).

Cheers,
      Michael

[1] http://www.w3.org/2008/WebVideo/Fragments/wiki/MediaTypeReview

-- 
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: David Singer <singer@apple.com>
> Date: Mon, 13 Jul 2009 12:48:37 +0200
> To: Michael Hausenblas <michael.hausenblas@deri.org>
> Cc: Media Fragment <public-media-fragment@w3.org>
> Subject: Re: ACTION-76 : Question if MPEG-21 Part 17 got registered on  IANA
> as   a media mime type for fragments
> 
> At 11:40  +0100 13/07/09, Michael Hausenblas wrote:
>> David,
>> 
>>>  correct, but I don't think they need to be; the fragment details are
>>>  in the referenced specifications, so the fragment scheme is defined
>>>  for both, in the formal sense...
>> 
>> Frankly, I'm not totally convinced. If you compare the application/mp21
>> registration with application/xhtml+xml [1] you will find that there the
>> fragment identifiers semantics have been explicitly mentioned.
>> 
>> Thoughts?
> 
> If that section is in the MIME registration but not the spec of XHTML
> 1.0, I am not sure that's right, as the two documents have to be in
> sync..  If it's in both, we hope that they agree, and I'm afraid of
> overlap.
> 
> mpeg-4 and mpeg-21 chose to take the route that the mime registration
> was merely a registration, a pointer from the code point (the mime
> type) to the spec.  Is that a problem?
> 
>> 
>> Cheers,
>>       Michael
>> 
>> [1] http://tools.ietf.org/html/rfc3236#section-3
>> 
>> --
>> 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: David Singer <singer@apple.com>
>>>  Date: Mon, 13 Jul 2009 11:47:20 +0200
>>>  To: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
>>>  Cc: erik mannens <erik.mannens@ugent.be>, Media Fragment
>>>  <public-media-fragment@w3.org>
>>>  Subject: Re: ACTION-76 : Question if MPEG-21 Part 17 got registered on
>>> IANA
>>>  as  a media mime type for fragments
>>>  Resent-From: Media Fragment <public-media-fragment@w3.org>
>>>  Resent-Date: Mon, 13 Jul 2009 09:49:48 +0000
>>> 
>>>  At 19:40  +1000 13/07/09, Silvia Pfeiffer wrote:
>>>>  I checked the documents - while the mime types are registered, the
>>>>  proposed fragment addressing schemes are not part of those
>>>>  registration documents. I think that was the point that Erik was
>>>>  trying to make. If this is incorrect, please explain - maybe the
>>>>  fragment addressing schemes were registered differently.
>>>> 
>>>>  Regards,
>>>>  Silvia.
>>> 
>>>  correct, but I don't think they need to be; the fragment details are
>>>  in the referenced specifications, so the fragment scheme is defined
>>>  for both, in the formal sense...
>>> 
>>>> 
>>>>  On Mon, Jul 13, 2009 at 6:38 PM, David Singer<singer@apple.com> wrote:
>>>>>   The MPEG-21 and MPEG-4 media types are both registered, MPEG-21
>>>>> recently.
>>>>> 
>>>>>   From: "Amanda Baber via RT" <iana-mime@iana.org>
>>>>> 
>>>>>   Date: July 8, 2009 2:22:47 AM GMT+02:00
>>>>> 
>>>>>   Cc: christian.timmerer@itec.uni-klu.ac.at, singer@apple.com
>>>>> 
>>>>>   Subject: [IANA #249445] Media Type Registration Reviews -
>>>>> Standards Tree/No
>>>>>   Internet  Draft
>>>>> 
>>>>>   Reply-To: iana-mime@iana.org
>>>>> 
>>>>>   Dear Christian and David,
>>>>> 
>>>>>   Per the IESG, IANA has registered the following media type with
>>>>>   David as the point of contact:
>>>>> 
>>>>>   application/mp21
>>>>> 
>>>>>   Please see
>>>>> 
>>>>>   http://www.iana.org/assignments/media-types/application/
>>>>> 
>>>>>   If you need to update the contact information, please send a
>>>>>   message to iana@iana.org.
>>>>> 
>>>>>   Best regards,
>>>>> 
>>>>>   Amanda Baber
>>>>>   Internet Assigned Numbers Authority (IANA)
>>>>> 
>>>>> 
>>>>> 
>>>>>   At 10:34  +0200 8/07/09, erik mannens wrote:
>>>>> 
>>>>>   Dear all,
>>>>> 
>>>>>   As one of the MPEG-21 editors notified, they did not register
>>>>> any mime-type
>>>>>   for their fragmenting scheme (as we expected). During the next phoneconf
>>>>>   this action can therefore be closed.
>>>>> 
>>>>>   Sincere greetings,
>>>>> 
>>>>>   Erik
>>>>> 
>>>>>   -----Original Message-----
>>>>>   From: myriam [mailto:myriam.amielh@cisra.canon.com.au]
>>>>>   Sent: donderdag 2 juli 2009 1:58
>>>>>   To: erik mannens
>>>>>   Cc: sylvain.devillers@francetelecom.com
>>>>>   Subject: Re: Quick question if MPEG-21 Part 17 got registered
>>>>> on IANA as a
>>>>>   media mime type for fragments
>>>>> 
>>>>>   Dear Eric,
>>>>>   no we did not propose any mime type registration.
>>>>>  feel free to contact me again should you have any questions,
>>>>>   Best regards
>>>>>   Myriam
>>>>> 
>>>>>   Research Manager
>>>>>   Canon Information System Research Australia
>>>>> 
>>>>>   erik mannens wrote:
>>>>>> 
>>>>>>   Dear Myriam, Sylvain,
>>>>>> 
>>>>>>   As co-chair of W3C's Media Fragments group [1] I ask you as editors of
>>>>>>   MPEG-21 Part 17 if your fragmenting scheme was ever registered as a
>>>>>>   media mime type for fragments on IANA? Thanks in advance for the
>>>>>>   prompt reply and have a nice day.
>>>>>> 
>>>>>>   Sincere greetings,
>>>>>> 
>>>>>>   Erik Mannens
>>>>>> 
>>>>>>   Project Manager
>>>>>> 
>>>>>>   Gaston Crommenlaan 8 bus 201
>>>>>> 
>>>>>>   B-9050 Ledeberg-Ghent, Belgium
>>>>>> 
>>>>>>   T: +32 9 331 49 93
>>>>>> 
>>>>>>   F: +32 9 331 48 96
>>>>>> 
>>>>>>   M: +32 473 27 44 17
>>>>>> 
>>>>>>   http://multimedialab.elis.ugent.be
>>>>>> 
>>>>>>   [1]: http://www.w3.org/2008/WebVideo/Fragments/
>>>>>> 
>>>>> 
>>>>>   --
>>>>> 
>>>>>   David Singer
>>>>>   Multimedia Standards, Apple Inc.
>>> 
>>> 
>>>  --
>>>  David Singer
>>>  Multimedia Standards, Apple Inc.
>>> 
> 
> 
> -- 
> David Singer
> Multimedia Standards, Apple Inc.
Received on Monday, 13 July 2009 11:03:36 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Wednesday, 21 September 2011 12:13:34 GMT