hixie: Enumerate the many ways you can make video accessible now. (whatwg r6426)

hixie: Enumerate the many ways you can make video accessible now.
(whatwg r6426)

http://dev.w3.org/cvsweb/html5/spec/Overview.html?r1=1.5130&r2=1.5131&f=h
http://html5.org/tools/web-apps-tracker?from=6425&to=6426

===================================================================
RCS file: /sources/public/html5/spec/Overview.html,v
retrieving revision 1.5130
retrieving revision 1.5131
diff -u -d -r1.5130 -r1.5131
--- Overview.html 11 Aug 2011 22:02:32 -0000 1.5130
+++ Overview.html 11 Aug 2011 22:24:39 -0000 1.5131
@@ -21384,10 +21384,21 @@
   them of how to access the video contents.<p class="note">In particular, this content is not intended to
   address accessibility concerns. To make video content accessible to
   the blind, deaf, and those with other physical or cognitive
-  disabilities, authors are expected to provide alternative media
-  streams and/or to embed accessibility aids (such as caption or
-  subtitle tracks, audio description tracks, or sign-language
-  overlays) into their media streams.<p>The <code><a href="#the-video-element">video</a></code> element is a <a href="#media-element">media element</a>
+  disabilities, a variety of features are available. Captions can be
+  provided, either embedded in the video stream or as external files
+  using the <code><a href="#the-track-element">track</a></code> element. Sign-language tracks can be
+  provided, again either embedded in the video stream or by
+  synchronizing multiple <code><a href="#the-video-element">video</a></code> elements using the <code title="attr-media-mediagroup"><a href="#attr-media-mediagroup">mediagroup</a></code> attribute or a
+  <code><a href="#mediacontroller">MediaController</a></code> object. Audio descriptions can be
+  provided, either as a separate track embedded in the video stream,
+  or a separate audio track in an <code><a href="#the-audio-element">audio</a></code> element <a href="#slaved-media-elements" title="slaved media elements">slaved</a> to the same controller
+  as the <code><a href="#the-video-element">video</a></code> element(s), or in text form using a
+  <span>WebVTT file</span> referenced using the <code><a href="#the-track-element">track</a></code>
+  element and synthesized into speech by the user agent. WebVTT can
+  also be used to provide chapter titles. For users who would rather
+  not use a media element at all, transcripts or other textual
+  alternatives can be provided by simply linking to them in the prose
+  near the <code><a href="#the-video-element">video</a></code> element.<p>The <code><a href="#the-video-element">video</a></code> element is a <a href="#media-element">media element</a>
   whose <a href="#media-data">media data</a> is ostensibly video data, possibly
   with associated audio data.<p>The <code title="attr-media-src"><a href="#attr-media-src">src</a></code>, <code title="attr-media-preload"><a href="#attr-media-preload">preload</a></code>, <code title="attr-media-autoplay"><a href="#attr-media-autoplay">autoplay</a></code>, 
   <code title="attr-media-mediagroup"><a href="#attr-media-mediagroup">mediagroup</a></code>, 
@@ -21653,9 +21664,14 @@
   them of how to access the audio contents.<p class="note">In particular, this content is not intended to
   address accessibility concerns. To make audio content accessible to
   the deaf or to those with other physical or cognitive disabilities,
-  authors are expected to provide alternative media streams and/or to
-  embed accessibility aids (such as transcriptions) into their media
-  streams.<p>The <code><a href="#the-audio-element">audio</a></code> element is a <a href="#media-element">media element</a>
+  a variety of features are available. If captions or a sign language
+  video are available, the <code><a href="#the-video-element">video</a></code> element can be used
+  instead of the <code><a href="#the-audio-element">audio</a></code> element to play the audio,
+  allowing users to enable the visual alternatives. Chapter titles can
+  be provided to aid navigation, using the <code><a href="#the-track-element">track</a></code> element
+  and a WebVTT file. And, naturally, transcripts or other textual
+  alternatives can be provided by simply linking to them in the prose
+  near the <code><a href="#the-audio-element">audio</a></code> element.<p>The <code><a href="#the-audio-element">audio</a></code> element is a <a href="#media-element">media element</a>
   whose <a href="#media-data">media data</a> is ostensibly audio data.<p>The <code title="attr-media-src"><a href="#attr-media-src">src</a></code>, <code title="attr-media-preload"><a href="#attr-media-preload">preload</a></code>, <code title="attr-media-autoplay"><a href="#attr-media-autoplay">autoplay</a></code>, 
   <code title="attr-media-mediagroup"><a href="#attr-media-mediagroup">mediagroup</a></code>,
   <code title="attr-media-loop"><a href="#attr-media-loop">loop</a></code>,

Received on Thursday, 11 August 2011 22:25:00 UTC