1 / 43

Captioning Solutions for Handheld Media and Mobile Devices

Captioning Solutions for Handheld Media and Mobile Devices. Geoff Freed Carl and Ruth Shapiro Family National Center for Accessible Media at WGBH Boston, Massachusetts http://ncam.wgbh.org/mm. About NCAM.

KeelyKia
Download Presentation

Captioning Solutions for Handheld Media and Mobile Devices

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Captioning Solutions for Handheld Media and Mobile Devices Geoff Freed Carl and Ruth Shapiro Family National Center for Accessible Media at WGBH Boston, Massachusetts http://ncam.wgbh.org/mm

  2. About NCAM • The Media Access Group at WGBH is a non-profit service (offices in Boston, Los Angeles, & New York) • The Caption Center (est. 1972) • the world's first captioning agency • makes audiovisual media accessible to audiences who are deaf or hard-of-hearing • Descriptive Video Service (est. 1990) • makes television, film & video accessible to audiences who are blind or visually impaired • The National Center for Accessible Media (est. 1993) • a research, development and advocacy entity • works to make existing & emerging technologies accessible to all audiences • digital television, convergent media, educational technologies, Web, multimedia

  3. Part I: Project Overview

  4. Project summary • Explore and prototype methods for delivering captioned media to mobile devices of all kinds • Address the technical requirements for packaging and distributing captions • Examine ways for users to access and control caption data

  5. Project summary • Launched October 1, 2007 (http://ncam.wgbh.org/mm) • Partners and participants include... • AOL • Apple • HP • Open Media Network • Research In Motion • MacNeil/Lehrer Productions • Samsung • Funding provided by the U.S. Department of Education

  6. Project goals • Publish demonstration models that show how to create, distribute, download and display captioned content on handheld devices • Publish usability research on accessible interface and caption-display options • Distribute information for content creators, service providers, and third-party tool developers to create and transcode captions • Detail the requirements necessary for non-proprietary as well as proprietary text and video formats to render captions

  7. What’s being tested? • Phones, smartphones • PDAs • PMPs • Handheld television receivers

  8. Mother says... “Come on... do people really watch TV and movies on telephones?”

  9. Part II: How movies or TV signals get to a mobile device

  10. How is video delivered to mobile devices? • Downloaded from the Web and synced to mobile device

  11. How is video delivered to mobile devices? • Downloaded or streamed via wireless network directly to mobile device

  12. How is video delivered to mobile devices? • Over data networks (e.g., EDGE, EV-DO, CDMA, GPRS, HSDPA, others) directly to mobile device

  13. How is TV delivered to mobile devices? • Via dedicated mobile-television standard (MPH, ATSC-M/H, MediaFLO (North America), DVB-H, DMB (Europe, Asia), others: • V CAST (Verizon), CV (AT&T), Sprint TV (Sprint), others

  14. How are captions delivered? • Ideally… • as data tracks in downloaded or streamed video • as data carried along with the digital mobile-TV signal • Methods available today: • closed captions encoded into video for certain Apple devices (iPhone, iPod Touch, iPod Nano) • open captions visible in any format, playable on any player

  15. Part III: Devices, evaluations

  16. What’s being evaluated? • Video support • what format(s)? • downlodable only, or streaming? • if streaming, can captions be received and controlled? • Closed-caption support • what format(s)? • how are they controlled?

  17. What’s being evaluated? • Will the device display open captions? • Characteristics • font face and size • text color • background type (transparent, translucent, solid) • background color • Can characteristics be controlled by the user?

  18. Devices currently under evaluation Apple iPhone Apple iPod Nano

  19. Apple iPhone • Video support: M4V; iPod player • Display: 3.5"/480x320 • Caption support: closed (.scc format; pop-on and roll-up) and open • Closed-caption control: yes • Characteristics: • .scc: • white monospace font, black background • no user control • open: • determined by author • no user control

  20. Apple iPhone:closed captions (pop-on)

  21. Apple iPhone:closed captions (roll-up)

  22. Apple iPhone:open captions

  23. Apple iPhone:CC settings

  24. Apple iPod Nano • Video support: M4V; iPod player • Display: 2"/320x240 • Caption support: closed (.scc format; pop-on and roll-up) and open • Closed-caption control: yes, via VideoSettings menu • Characteristics: • .scc: • white monospace font, black background • no user control • open: • determined by author • no user control

  25. Apple iPod Nano:closed captions (pop-on)

  26. Apple iPod Nano:closed captions (roll-up)

  27. Apple iPod Nano:open captions

  28. Apple iPod Nano:CC settings

  29. Devices currently under evaluation BlackBerry® Curve 8320™ Smartphone

  30. BlackBerry Curve 8320 • Video support: MP4, H.263, WMV; BlackBerry Media Player • Display: 2.5"/320x240 • Caption support: open only • Caption control: none • Characteristics: • open captions only • style determined by author • no user control

  31. BlackBerry Curve 8320:open captions

  32. Devices currently under evaluation • HP iPAQ 210 PDA • HP iPAQ 510 Voice Messenger

  33. HP 210 • Video support: WMV; Windows Media Player • Display: 4"/480x640 • Caption support: open only • Caption control: none • Characteristics: • open captions only • determined by author • no user control

  34. HP 210

  35. HP 210

  36. HP 510 • Video support: WMV; Windows Media Player • Display: 2"/176x220 • Caption support: open only • Caption control: none • Characteristics: • open captions only • determined by author • no user control

  37. HP 510

  38. Devices currently under evaluation • Samsung BlackJack II (i617)

  39. Samsung BlackJack II i617 • Video support: WMV; Windows Media Player • AT&T’s CV service (not yet evaluated) • Display: 2.4"/320x240 • Caption support: open only • Caption control: none • Characteristics: • open captions only • determined by author • no user control

  40. Samsung BlackJack II i617

  41. Part IV: Upcoming work

  42. What’s next? • Focus groups in Los Angeles and Boston • test a variety of caption-display options • ideas for caption-control interfaces • Continue studying caption-creation methods for mobile delivery • Begin creating prototypes of caption-control interfaces • Continue to work with standards groups • W3C’s Timed Text working group, Synchronized Multimedia working group, Mobile Web Initiative and the Video on the Web activity • ATSC M/H working group • Continue to work with vendors to develop and refine methods for creating and distributing caption data • Create working examples of captioned media

  43. More information • Project Web site: http://ncam.wgbh.org/mm • project summary • prototypes of captioned media for various devices • device-comparison chart

More Related