accessible video in two parts n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Accessible Video in Two Parts PowerPoint Presentation
Download Presentation
Accessible Video in Two Parts

Loading in 2 Seconds...

play fullscreen
1 / 38

Accessible Video in Two Parts - PowerPoint PPT Presentation


  • 103 Views
  • Uploaded on

Accessible Video in Two Parts. Terrill Thompson Techology Accessibility Specialist University of Washington tft@ uw.edu http://staff.washington.edu/tft http:// terrillthompson.com. Agenda. Part 2: Making the Case Exploring enterprise-wide strategies for making video accessible.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Accessible Video in Two Parts' - treva


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
accessible video in two parts

Accessible Video in Two Parts

Terrill Thompson

Techology Accessibility Specialist University of Washington

tft@uw.edu

http://staff.washington.edu/tft

http://terrillthompson.com

agenda
Agenda

Part 2: Making the Case

  • Exploring enterprise-wide strategies for making video accessible

Part 1: Nuts and Bolts

  • Closed captions
  • Description
  • Accessible media players
approaches to captioning
Approaches to Captioning
  • Let machines do it for you
  • Hire a captioning vendor
  • Recruit and manage volunteers (crowdsourcing)
  • Do it yourself! (DIY)
free or cheap captioning tools
Free or Cheap Captioning Tools
  • MAGpie (Windows)
    • http://ncam.wgbh.org/invent_build/web_multimedia/tools-guidelines/magpie
  • Subtitle Workshop (Windows)
    • http://www.urusoft.net/products.php?cat=sw&lang=1
  • Movie Captioner (Mac & Windows; not free)
    • http://www.synchrimedia.com/
more free or cheap captioning tools
More Free or Cheap Captioning Tools
  • CapScribe
    • from U of Toronto
    • also supports audio description
    • http://cnice.idrc.ocad.ca/tools.php
free online captioning tools
Free Online Captioning Tools
  • Amara (formerly Universal Subtitles)
    • http://amara.org
  • DotSub
    • http://dotsub.com
  • Subtitle Horse
    • http://subtitle-horse.com
  • CaptionTube
    • http://captiontube.appspot.com
the closed captioning process
The Closed Captioning Process
  • Transcribe video into caption-sized segments
  • Use a captioning tool to timestamp the transcript
  • Save to an output file that is appropriate for your media type
flavors of closed captions
Flavors of Closed Captions
  • SubRip – SRT file, very simple and widely supported
  • Timed Text Markup Language (TTML) – A W3C standard
  • WebVTT – The preferred format for HTML5
  • And many more…
s upports video accessibility
supports video accessibility

<video src="myvideo.mp4">

</video>

supports captions
supports captions

<video controls>

<source src="myvideo.mp4" type="video/mp4">

<source src="myvideo.webm" type="video/webm">

<track kind="captions" src="mycaptions.vtt" default>

</video>

description a k a
Description, a.k.a.
  • Audio description
  • Video description
  • Described video
  • Descriptive narration
what is description
What is Description?
  • A separate narrative track, for people who can’t see critical visual content
  • Can be avoided by assuring that all important information is communicated visually and audibly
types of description in descending order by quality cost
Types of Description(in descending order by quality/cost)
  • Recorded audio, remixed into video production
  • Recorded audio as a separate audio file, synched with video by the media player
  • WebVTT text-based description, read by assistive technologies during playback
diy text based description
DIY Text-based Description
  • Use a captioning tool to compose description text and synch it with the video
  • Insert brief descriptions during periods when there is no competing audio content
  • Allow enough time for a screen reader to read the description (your best estimate)
  • Include all on-screen text
  • Include succinct descriptions of any visual information that is integral to the communication
  • Export to WebVTT for (theoretical) use in HTML5 video player
supports description too
supports description too!

<video controls>

<source src="myvideo.mp4" type="video/mp4">

<source src="myvideo.webm" type="video/webm">

<track kind="captions" src="mycaptions.vtt" default>

<track kind="descriptions" src="mydesc.vtt">

</video>

hiring vendors
Hiring Vendors
  • Captioning Service Vendors
    • http://www.dcmp.org/ai/10/
  • Description Service Vendors
    • http://www.dcmp.org/ai/179/

Source for both: Described and Captioned Media Program (DCMP)

media player considerations
Media Player Considerations
  • Does it support closed captions?
  • Are controls accessible by keyboard?
  • Are controls properly labeled for screen reader users?
  • Does it support closed text-based description?
  • Does it include an Application Program Interface (API) so you can extend its functionality (e.g., with video search or an interactive transcript)?
ump features
UMP Features
  • Support for closed captions
  • Support for closed text-based description
  • Support for description via swapping to an alternative video source
  • Fully accessible player controls
  • A fallback player (JW Player) that looks and behaves exactly like the main player
  • Ability to search videos using their captions
  • An interactive transcript (assembled using captions and description)
  • Controllable with hot keys from anywhere on the page
  • Customizable via Settings button
more on do it video and ump
More on DO-IT Video and UMP
  • Our website:
    • http://uw.edu/doit/video
  • The open source Universal Media Player (UMP):
    • Coming soon
    • Watch http://terrillthompson.com/blog
agenda1
Agenda

Part 2: Making the Case

  • Exploring enterprise-wide strategies for making video accessible

Part 1: Nuts and Bolts

  • Closed captions
  • Description
  • Accessible media players
making the case who benefits from accessible video
Making the case: Who benefits from accessible video?
  • People who are unable to hear the audio
  • People who are unable to see the video
  • People who are unable to use a mouse
  • People with cognitive disabilities
making the case who else benefits from accessible video
Making the case: Who else benefits from accessible video?
  • People whose first language is not the one spoken in the video
  • People who don't understand the language of the video at all
  • People who have low Internet bandwidth
  • People who need to search for particular video content
  • People who are busy
video search is here
Video search is here

Example from MIT OpenCourseware: http://interactive.3playmedia.com/mitocw/

video translation is here
Video translation is here

Example is from youtube.com

captioned video supports research
Captioned video supports research

Example is from http://www.aljazeera.com/indepth/interactive/

we want all videos to be captioned
We want all videos to be captioned

Percent of a university's video accessibility barriers removed by captioning one academic course as an individual accommodation

various models
Various Models
  • Make it affordable
    • Negotiate a great price with a vendor
  • Make it easy
    • Simple web portal for getting and receiving captioned media
  • Crowdsourcing?
    • Academic credit or work study for students
    • Worthwhile project for alumni & other volunteers
  • Develop an in-house service
tedtalks a crowdsourcing success story
TEDTalks: A Crowdsourcing Success Story
  • 43,490 translations
  • 101 languages
  • 9915 volunteer translators
inspiring people to use what you build
Inspiring People to Use What you Build
  • Evangelize – talk about the benefits
  • Persuade your institution to embrace and implement the benefits (search, translation, interactive transcripts, etc.)
  • Create a culture where anyone who is not captioning their video is square
  • Institutional policy: All video must be accessible