Accessibility/Video a11y Aug09 - Revision history

Silviapfeiffer: /* Video Accessibility Status Aug 2009 & Nov 2009 & Feb 2010 update */

2010-02-07T11:42:35Z

Video Accessibility Status Aug 2009 & Nov 2009 & Feb 2010 update

← Older revision		Revision as of 11:42, 7 February 2010
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	This is a status report on the progress of video accessibility. I thought I'd publish this snapshot since it is a nice collection of resources around where video accessibility stands right now.		This is a status report on the progress of video accessibility. I thought I'd publish this snapshot since it is a nice collection of resources around where video accessibility stands right now.

			Update Feb 10:
			The new [http://www.w3.org/WAI/PF/HTML/wiki/Main_Page W3C HTML5 Accessibility Task Force] has been founded in Dec 09 and activities for specification improvements and trial implementations are now [http://lists.w3.org/Archives/Public/public-html-a11y/ happening there].

Silviapfeiffer: added open bugs at W3C

2010-02-07T11:28:49Z

added open bugs at W3C

← Older revision		Revision as of 11:28, 7 February 2010
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	Update Feb10:		Update Feb10:
	* a specification that was created from a discussion in the W3C Accessibility Task Force is available from: http://www.w3.org/WAI/PF/HTML/wiki/Media_MultitrackAPI		* a specification that was created from a discussion in the W3C Accessibility Task Force is available from: http://www.w3.org/WAI/PF/HTML/wiki/Media_MultitrackAPI


	=== Demo implementations using javascript ===		=== Demo implementations using javascript ===
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	Update Nov09:		Update Nov09:
	* "Elephants Dream" following the second itext specification is available at http://www.annodex.net/~silvia/itext/elephant_no_skin_v2.html		* "Elephants Dream" following the second itext specification is available at http://www.annodex.net/~silvia/itext/elephant_no_skin_v2.html


	=== Related open bugs in Mozilla ===		=== Related open bugs in Mozilla ===
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	* "Implement UI for subtitles on html5 video/audio" https://bugzilla.mozilla.org/show_bug.cgi?id=515898		* "Implement UI for subtitles on html5 video/audio" https://bugzilla.mozilla.org/show_bug.cgi?id=515898
	* "Ogg Theora video with two audio tracks fails to play" https://bugzilla.mozilla.org/show_bug.cgi?id=516323		* "Ogg Theora video with two audio tracks fails to play" https://bugzilla.mozilla.org/show_bug.cgi?id=516323


			=== Related open bugs in W3C HTML WG ===

			* http://www.w3.org/Bugs/Public/show_bug.cgi?id=8659

			* http://www.w3.org/Bugs/Public/show_bug.cgi?id=5758


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	* "HTML5 Video element discussions at TPAC meetings"		* "HTML5 Video element discussions at TPAC meetings"
	http://blog.gingertech.net/2009/11/16/html5-video-element-discussions-at-tpac-meetings/		http://blog.gingertech.net/2009/11/16/html5-video-element-discussions-at-tpac-meetings/
			* "Tutorial on HTML5 open video at LCA 2010" http://blog.gingertech.net/2010/01/26/tutorial-on-html5-open-video-at-lca-2010/

Silviapfeiffer: added update Feb 10

2010-02-07T11:12:51Z

added update Feb 10

← Older revision		Revision as of 11:12, 7 February 2010
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	=== Specifications ===		=== Specifications: associating external text ===

	Specifications for how to associate out-of-band time-aligned text with a HTML5 video (and audio) tag as well as how to parse multitrack media files and expose the same attributes, DOM API and JavaScript API are in the making.		Specifications for how to associate out-of-band time-aligned text with a HTML5 video (and audio) tag as well as how to parse multitrack media files and expose the same attributes, DOM API and JavaScript API are in the making.
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	Update Feb10:		Update Feb10:
	* a specification that was created from a discussion in the W3C Accessibility Task Force is available from: http://www.w3.org/WAI/PF/HTML/wiki/Media_TextAssociations		* a specification that was created from a discussion in the W3C Accessibility Task Force is available from: http://www.w3.org/WAI/PF/HTML/wiki/Media_TextAssociations
			* discussions about standard formats tend towards: SRT and DFXP


			=== Specifications: JavaScript API for multitrack media ===

			Update Feb10:
			* a specification that was created from a discussion in the W3C Accessibility Task Force is available from: http://www.w3.org/WAI/PF/HTML/wiki/Media_MultitrackAPI

	=== Demo implementations using javascript ===		=== Demo implementations using javascript ===

Silviapfeiffer: started updating with Feb 10 state

2010-02-07T10:50:52Z

started updating with Feb 10 state

← Older revision		Revision as of 10:50, 7 February 2010
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	== Video Accessibility Status Aug 2009 & Nov 2009 update ==		== Video Accessibility Status Aug 2009 & Nov 2009 & Feb 2010 update ==

	by Silvia Pfeiffer		by Silvia Pfeiffer
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	* a [http://svn.annodex.net/itext/elephants_dream/oggkate/kate_encode.sh script has been added to create Ogg Kate files and merge them with Ogg Video files] - the binary files are not in the repository		* a [http://svn.annodex.net/itext/elephants_dream/oggkate/kate_encode.sh script has been added to create Ogg Kate files and merge them with Ogg Video files] - the binary files are not in the repository
	* 1 [http://svn.annodex.net/itext/elephants_dream/elephant.audio_description.ogg audio description file] which can also be added to a Ogg video file using oggz-merge		* 1 [http://svn.annodex.net/itext/elephants_dream/elephant.audio_description.ogg audio description file] which can also be added to a Ogg video file using oggz-merge
	* added 1 subtitle file in [http://svn.annodex.net/itext/elephants_dream/elephant.smi ~~SMIL~~ format] and one in [http://svn.annodex.net/itext/elephants_dream/elephant.sub2 Substation2 format], thanks to Guillaume Olivrin		* added 1 subtitle file in [http://svn.annodex.net/itext/elephants_dream/elephant.smi SAMI Microsoft Synchronized Accessible Media Interchange format subtitle file] and one in [http://svn.annodex.net/itext/elephants_dream/elephant.sub2 Substation2 format], thanks to Guillaume Olivrin
	* added 1 [http://svn.annodex.net/itext/elephants_dream/sasl.ogv sign language file] in South African Sign Language provided by Nare Mmonwa		* added 1 [http://svn.annodex.net/itext/elephants_dream/sasl.ogv sign language file] in South African Sign Language provided by Nare Mmonwa

			Further accessibility-related files have been added (Feb '10):
			* 1 [http://svn.annodex.net/itext/elephants_dream/elephant.dfxp DFXP W3C Timed Text format subtitle file]


	=== Specifications ===		=== Specifications ===
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	* an second specification for out-of-band time-aligned text files for HTML5 video is available from https://wiki.mozilla.org/Accessibility/HTML5_captions_v2, with a main change being the introduction of a structuring element itextlist		* an second specification for out-of-band time-aligned text files for HTML5 video is available from https://wiki.mozilla.org/Accessibility/HTML5_captions_v2, with a main change being the introduction of a structuring element itextlist
	* Feedback and discussions are collected at https://wiki.mozilla.org/Accessibility/Experiment2_feedback		* Feedback and discussions are collected at https://wiki.mozilla.org/Accessibility/Experiment2_feedback

			Update Feb10:
			* a specification that was created from a discussion in the W3C Accessibility Task Force is available from: http://www.w3.org/WAI/PF/HTML/wiki/Media_TextAssociations


	=== Demo implementations using javascript ===		=== Demo implementations using javascript ===
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	A collection of JavaScript implementations for associating time-aligned text with audio/video is starting to emerge.		A collection of JavaScript implementations for associating time-aligned text with audio/video is starting to emerge.

	There are 4 demos at http://www.annodex.net/~silvia/itext/ - their open source code is available from http://svn.annodex.net/itext/.		There are demos at http://www.annodex.net/~silvia/itext/ - their open source code is available from http://svn.annodex.net/itext/.

	The demos consist of the following:		The demos consist of the following:

Silviapfeiffer: added more publications and talks

2009-11-26T01:02:37Z

added more publications and talks

@@ Line 77: / Line 77: @@
 * “HTML5 audio element accessibility”
 http://blog.gingertech.net/2009/09/16/html5-audio-element-accessibility/
 Also the following relate to media fragment addressing, which will enable a deeper interaction with audio and video and thus improve accessibility as well:
@@ Line 87: / Line 98: @@
 * “URI fragments vs URI queries for media fragment addressing”
 http://blog.gingertech.net/2009/09/08/uri-fragments-vs-uri-queries-for-media-fragment-addressing/

Silviapfeiffer: added second demo

2009-11-26T00:56:26Z

added second demo

← Older revision		Revision as of 00:56, 26 November 2009
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	* "Elephants Dream" with a demonstration of how to directly jump to time offsets in videos through URL changes		* "Elephants Dream" with a demonstration of how to directly jump to time offsets in videos through URL changes

			Update Nov09:
			* "Elephants Dream" following the second itext specification is available at http://www.annodex.net/~silvia/itext/elephant_no_skin_v2.html

	=== Related open bugs in Mozilla ===		=== Related open bugs in Mozilla ===

Silviapfeiffer: added second specification

2009-11-26T00:55:22Z

added second specification

← Older revision		Revision as of 00:55, 26 November 2009
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	* Feedback and discussions are collected at https://wiki.mozilla.org/Accessibility/Experiment1_feedback		* Feedback and discussions are collected at https://wiki.mozilla.org/Accessibility/Experiment1_feedback

			Update Nov09:
			* an second specification for out-of-band time-aligned text files for HTML5 video is available from https://wiki.mozilla.org/Accessibility/HTML5_captions_v2, with a main change being the introduction of a structuring element itextlist
			* Feedback and discussions are collected at https://wiki.mozilla.org/Accessibility/Experiment2_feedback

	=== Demo implementations using javascript ===		=== Demo implementations using javascript ===

Silviapfeiffer: added more files to collection

2009-11-26T00:45:23Z

added more files to collection

← Older revision		Revision as of 00:45, 26 November 2009
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	== Video Accessibility Status Aug 2009 ==		== Video Accessibility Status Aug 2009 & Nov 2009 update ==

	by Silvia Pfeiffer		by Silvia Pfeiffer
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	* 1 lrc and 1 qttext file for lyrics for “Chocolate Rain” video and music file CC-licensed by Tay Zonday – this tests different file formats for text annotations and support of accessibility for audio		* 1 lrc and 1 qttext file for lyrics for “Chocolate Rain” video and music file CC-licensed by Tay Zonday – this tests different file formats for text annotations and support of accessibility for audio

			Further accessibility-related files have been added (Nov 09):
			* all 34 srt files have been converted to utf-8 for use with Kate
			* a [http://svn.annodex.net/itext/elephants_dream/oggkate/kate_encode.sh script has been added to create Ogg Kate files and merge them with Ogg Video files] - the binary files are not in the repository
			* 1 [http://svn.annodex.net/itext/elephants_dream/elephant.audio_description.ogg audio description file] which can also be added to a Ogg video file using oggz-merge
			* added 1 subtitle file in [http://svn.annodex.net/itext/elephants_dream/elephant.smi SMIL format] and one in [http://svn.annodex.net/itext/elephants_dream/elephant.sub2 Substation2 format], thanks to Guillaume Olivrin
			* added 1 [http://svn.annodex.net/itext/elephants_dream/sasl.ogv sign language file] in South African Sign Language provided by Nare Mmonwa

	=== Specifications ===		=== Specifications ===

Silviapfeiffer at 23:32, 16 September 2009

2009-09-16T23:32:48Z

← Older revision		Revision as of 23:32, 16 September 2009
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	The following bugs relate to video and audio accessibility at Mozilla:		The following bugs relate to video and audio accessibility at Mozilla:

	* "Support for Kate overlay streams in <video> tag" https://bugzilla.mozilla.org/show_bug.cgi?id=481529		* "Support for Kate overlay streams in video tag" https://bugzilla.mozilla.org/show_bug.cgi?id=481529
	* "Implement UI for subtitles on html5 video/audio" https://bugzilla.mozilla.org/show_bug.cgi?id=515898		* "Implement UI for subtitles on html5 video/audio" https://bugzilla.mozilla.org/show_bug.cgi?id=515898
	* "Ogg Theora video with two audio tracks fails to play" https://bugzilla.mozilla.org/show_bug.cgi?id=516323		* "Ogg Theora video with two audio tracks fails to play" https://bugzilla.mozilla.org/show_bug.cgi?id=516323

Silviapfeiffer: started page

2009-09-16T23:31:30Z

started page

New page

== Video Accessibility Status Aug 2009 ==

by Silvia Pfeiffer

This is a status report on the progress of video accessibility. I thought I'd publish this snapshot since it is a nice collection of resources around where video accessibility stands right now.

=== Test File Collection ===

A collection of time-aligned text files for testing is starting to emerge.

Text files for video/audio in different formats are available from: http://svn.annodex.net/itext/elephants_dream/ and
http://svn.annodex.net/itext/chocolate_rain/

These include:
* 34 srt files for captions/subtitles in 34 different languages for “Elephants Dream” Blender Foundation movie – these are good for tests of srt support and different charactersets (i18n)
* 1 srt file and audio recording of audio description in English for “Elephants Dream” – these are good to test audio descriptions for the blind in two different formats
* 1 srt file for chapter markers for “Elephants Dream” – this tests sectioning and direct access to chapters
* 1 lrc and 1 qttext file for lyrics for “Chocolate Rain” video and music file CC-licensed by Tay Zonday – this tests different file formats for text annotations and support of accessibility for audio

=== Specifications ===

Specifications for how to associate out-of-band time-aligned text with a HTML5 video (and audio) tag as well as how to parse multitrack media files and expose the same attributes, DOM API and JavaScript API are in the making.

* an initial specification for out-of-band time-aligned text files for HTML5 video is available from https://wiki.mozilla.org/Accessibility/HTML5_captions
* initial discussions have been had on the mailing lists of the following communities: W3C HTML WG, WHATWG, W3C WAI-XTECH, Free ARIA community, Xiph accessibility
* Feedback and discussions are collected at https://wiki.mozilla.org/Accessibility/Experiment1_feedback

=== Demo implementations using javascript ===

A collection of JavaScript implementations for associating time-aligned text with audio/video is starting to emerge.

There are 4 demos at http://www.annodex.net/~silvia/itext/ - their open source code is available from http://svn.annodex.net/itext/.

The demos consist of the following:
* "Elephants Dream" with subtitles and captions, chapter markers, and textual audio annotations for screen readers
* "Elephants Dream" with a different video player skin to test video player controls accessibility
* "Chocolate Rain" as video with subtitles and as audio with lyrics
* "Elephants Dream" with a demonstration of how to directly jump to time offsets in videos through URL changes

=== Related open bugs in Mozilla ===

The following bugs relate to video and audio accessibility at Mozilla:

* "Support for Kate overlay streams in <video> tag" https://bugzilla.mozilla.org/show_bug.cgi?id=481529
* "Implement UI for subtitles on html5 video/audio" https://bugzilla.mozilla.org/show_bug.cgi?id=515898
* "Ogg Theora video with two audio tracks fails to play" https://bugzilla.mozilla.org/show_bug.cgi?id=516323

=== Publications ===

Silvia posted the following blog posts relating to video accessibility:
* “First experiments with itext”
http://blog.gingertech.net/2009/07/29/first-experiments-with-itext/
* “The different aspects of video accessibility”
http://blog.gingertech.net/2009/08/03/aspects-of-video-accessibility/
* “ARIA – A Brief Introduction”
http://blog.gingertech.net/2009/08/21/aria-a-brief-introduction/
* “Updated video accessibility demo”
http://blog.gingertech.net/2009/09/14/updated-video-accessibility-demo/
* “Open Standards for Sign Languages”
http://blog.gingertech.net/2009/09/16/open-standards-sign-language/
* “HTML5 audio element accessibility”
http://blog.gingertech.net/2009/09/16/html5-audio-element-accessibility/

Also the following relate to media fragment addressing, which will enable a deeper interaction with audio and video and thus improve accessibility as well:
* “Jumping to time offsets in HTML5 video”
http://blog.gingertech.net/2009/08/19/jumping-to-time-offsets-in-videos/
* “Media Fragment addressing into a live stream”
http://blog.gingertech.net/2009/08/26/media-fragment-addressing-into-a-live-stream/
* “Demo of deep hyperlinking into HTML5 video”
http://blog.gingertech.net/2009/09/02/demo-of-deep-hyperlinking-into-html5-video/
* “URI fragments vs URI queries for media fragment addressing”
http://blog.gingertech.net/2009/09/08/uri-fragments-vs-uri-queries-for-media-fragment-addressing/