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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. Part 2: Making the Case Exploring enterprise-wide strategies for making video accessible.

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Accessible Video in Two Parts

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  1. Accessible Video in Two Parts Terrill Thompson Techology Accessibility Specialist University of Washington tft@uw.edu http://staff.washington.edu/tft http://terrillthompson.com

  2. 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

  3. Part 1

  4. Approaches to Captioning • Let machines do it for you • Hire a captioning vendor • Recruit and manage volunteers (crowdsourcing) • Do it yourself! (DIY)

  5. 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/

  6. More Free or Cheap Captioning Tools • CapScribe • from U of Toronto • also supports audio description • http://cnice.idrc.ocad.ca/tools.php

  7. 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

  8. 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

  9. 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…

  10. Captioning Tools • MAGpie http://ncam.wgbh.org/webaccess/magpie • HiCaption http://www.hisoftware.com/hmcc • Captionate (for Flash)http://www.buraks.com/captionate • AutomaticSynchttp://www.automaticsync.com

  11. Description, a.k.a. • Audio description • Video description • Described video • Descriptive narration

  12. 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

  13. 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

  14. 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

  15. 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)

  16. 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)?

  17. supports video accessibility <video src="itaccess.mp4"> </video>

  18. supports captions & description <video controls> <source src="itaccess.mp4" type="video/mp4"> <source src="itaccess.webm" type="video/webm"> <track kind="captions" src="itaccess.vtt"> <track kind="description" src="itaccess_desc.vtt"> </video>

  19. Internet Explorer 10 has good support for accessibility

  20. Universal Media Player (UMP)

  21. 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

  22. Video Search

  23. Interactive Transcript

  24. Customizable

  25. 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

  26. Part 2

  27. 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

  28. 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

  29. 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

  30. Video search is here Example from MIT OpenCourseware: http://interactive.3playmedia.com/mitocw/

  31. Video translation is here Example is from youtube.com

  32. Interactive transcripts are here

  33. Captioned video supports research Example is from http://www.aljazeera.com/indepth/interactive/

  34. 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

  35. How do we get there?

  36. 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

  37. TEDTalks: A Crowdsourcing Success Story • 43,490 translations • 101 languages • 9915 volunteer translators

  38. 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

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