W3C home > Mailing lists > Public > public-media-fragment@w3.org > November 2011

Re: Implementation Report for mediafragments.js

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Thu, 17 Nov 2011 22:43:44 +1100
Message-ID: <CAHp8n2mGAVnWdOcgS2YQrf8BC0nCiwB02XJM9hZqeVP5jcQFnw@mail.gmail.com>
To: Davy Van Deursen <davy.vandeursen@ugent.be>
Cc: Thomas Steiner <tomac@google.com>, Media Fragment <public-media-fragment@w3.org>, Erik Mannens <erik.mannens@ugent.be>, yl2@ecs.soton.ac.uk
Sounds good to me.
Silvia.

On Thu, Nov 17, 2011 at 8:51 PM, Davy Van Deursen
<davy.vandeursen@ugent.be> wrote:
> Thomas,
>
> On 17/11/2011 10:23, Thomas Steiner wrote:
>>
>> Hi Davy, all,
>>
>> As a follow-up question, TC0081-UA [1] is marked as illegal…
>>
>> t=0:00:00.
>>
>> …however, it seems to _legally_ fullfil npt-hhmmss, as defined by RFC
>> 2326 [2] (below).
>>
>> npt-time     =   "now" | npt-sec | npt-hhmmss
>> npt-sec      =   1*DIGIT [ "." *DIGIT ]
>> npt-hhmmss   =   npt-hh ":" npt-mm ":" npt-ss [ "." *DIGIT ]
>> npt-hh       =   1*DIGIT     ; any positive number
>> npt-mm       =   1*2DIGIT    ; 0-59
>> npt-ss       =   1*2DIGIT    ; 0-59
>>
>> Do you agree that TC0081-UA should be marked as _legal_? Note,
>> TC0080-UA looks very similar (t=00:00.), however, it is indeed
>> _illegal_, as there is no such concept as npt-mmss. What do you think?
>> Am i misreading the spec? The trailing dot is indeed very confusing.
>> Could anyone clarify? Thanks!
>
> First of all, I noticed a mismatch in the spec between [1] and [2]. In [1],
> npt-mmss is defined, while in [2], it is not. The group decided to make the
> hours optional (see also ACTION-191 [3]); hence the extension to RFC2326.
> However, this should be corrected in [2]. Note that in both cases
> (npt-hhmmss and npt-mmss), the trailing dot is allowed.
>
> Knowing this, TC0080-UA and TC0081-UA should be marked as valid media
> fragments according to the spec (which is at least how I interpret it :)).
>
> If no one objects, I can perform the changes (in both the spec and the test
> cases).
>
> Best regards,
>
> Davy
>
> [1]
> http://www.w3.org/2008/WebVideo/Fragments/WD-media-fragments-spec/#npt-time
> [2]
> http://www.w3.org/2008/WebVideo/Fragments/WD-media-fragments-spec/#collected-syntax-uri
> [3] http://www.w3.org/2008/WebVideo/Fragments/tracker/actions/191
>
> --
> Davy Van Deursen
>
> Ghent University - IBBT
> Department of Electronics and Information Systems - Multimedia Lab
> URL: http://multimedialab.elis.ugent.be/dvdeurse
>
>
Received on Thursday, 17 November 2011 11:44:33 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 20:52:47 UTC