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[Bug 11593] the <track> @kind attribute should include the all of the identified accessibility content types

From: <bugzilla@jessica.w3.org>
Date: Tue, 11 Jan 2011 19:26:09 +0000
To: public-html-a11y@w3.org
Message-Id: <E1Pcjr7-00042q-5O@jessica.w3.org>

--- Comment #9 from Silvia Pfeiffer <silviapfeiffer1@gmail.com> 2011-01-11 19:26:08 UTC ---
(In reply to comment #0)
> The current @kind attribute of <track>
> (http://dev.w3.org/html5/spec/Overview.html#the-track-element) only allows for
> the following kinds of content:
>  Subtitles
>  Captions
>  Descriptions
>  Chapters
>  Metadata
> The Accessibility Task Force Media Sub-Team have identified the following types
> of alternative content that should be made available to meet all User needs:
> Text-based:
>  Text video description

"text video description" is identical to "description" - already covered

>  Extended text video descriptions

This adds the pausing feature to "description", i.e. a means to make a
description cue last longer than the available synchronized time with the
video. IMO it's a feature that should be available to all "description" kinds
of content, so doesn't need a new kind.

>  Captioning

"Captioning" is identical to "Captions" - already covered

>  Enhanced captions/subtitles

This has been a matter of discussion for a while and the answer has thus far
been to use the "Metadata" type and run your own enhanced captions/subtitles.

>  Transcripts

"Transcripts" are not provided in chunks in sync with the video, but as a block
of text, so these do not need to be provided through @kind. Example uses of
transcripts are shown here:

- external linked resource:

- scrolling transcript:

> The enumerated list table should be extended to address these KINDS of
> alternative content.

Other than extended captions/subtitles, which can right now be satisfied
through "Metadata", nothing is missing IMHO.

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