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Re: Survey ready on Media Text Associations proposal

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Thu, 11 Mar 2010 15:10:01 +1100
Message-ID: <2c0e02831003102010x534a01d3j7bdfef20f5e364bf@mail.gmail.com>
To: Philip Jägenstedt <philipj@opera.com>
Cc: Michael Smith <mike@w3.org>, HTML Accessibility Task Force <public-html-a11y@w3.org>
On Thu, Mar 11, 2010 at 2:56 PM, Philip Jägenstedt <philipj@opera.com> wrote:
> On Thu, 11 Mar 2010 07:46:01 +0800, Silvia Pfeiffer
> <silviapfeiffer1@gmail.com> wrote:
>> + clarify that an "enabled" attribute in the markup expresses the
>> intention of the page author to have this track activated. The UA may
>> overrule this intent where it has extra knowledge about user
>> preferences, e.g. for selecting a more appropriate alternative out of
>> a trackgroup.
>> + update the selection algorithm for the trackgroup at
>> http://www.w3.org/WAI/PF/HTML/wiki/Media_TextAssociations#Resource_selection_algorithm
>> to basically signify:
>> For each track in a trackgroup
>>  - the UA can decide to set the enabled attribute based on 'lang'
>> and/or 'media' attributes on track elements.
>>  - If there exists tracks with the enabled attribute:
>>      Select the first such track.
>>    Else:
>>      Do not use any of the tracks
> Is the intention that we specify a track selection algorithm with exact
> rules for which track to enable based on settings, or should this be left to
> UAs to override ad-hoc?

I don't think anything is prescribed to UAs in the HTML spec - if at
all we can only make recommendations on what override rules a UA uses.

Received on Thursday, 11 March 2010 04:10:56 UTC

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