Captioning solutions for handheld media and mobile devices
Download
1 / 43

Captioning Solutions for Handheld Media and Mobile Devices - PowerPoint PPT Presentation


  • 405 Views
  • Uploaded on

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.

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 'Captioning Solutions for Handheld Media and Mobile Devices' - KeelyKia


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
Captioning solutions for handheld media and mobile devices l.jpg

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 l.jpg
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


Slide3 l.jpg

Part I:

Project Overview


Project summary l.jpg
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


Project summary5 l.jpg
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


Project goals l.jpg
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


What s being tested l.jpg
What’s being tested?

  • Phones, smartphones

  • PDAs

  • PMPs

  • Handheld television receivers


Slide8 l.jpg

Mother says...

“Come on... do people really watch

TV and movies on telephones?”


Slide9 l.jpg

Part II:

How movies or TV signals

get to a mobile device


How is video delivered to mobile devices l.jpg
How is video delivered to mobile devices?

  • Downloaded from the Web and synced to mobile device


How is video delivered to mobile devices11 l.jpg
How is video delivered to mobile devices?

  • Downloaded or streamed via wireless network

    directly to mobile device


How is video delivered to mobile devices12 l.jpg
How is video delivered to mobile devices?

  • Over data networks (e.g., EDGE, EV-DO, CDMA, GPRS, HSDPA, others) directly to mobile device


How is tv delivered to mobile devices l.jpg
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


How are captions delivered l.jpg
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


Slide15 l.jpg

Part III:

Devices, evaluations


What s being evaluated l.jpg
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?


What s being evaluated17 l.jpg
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?


Devices currently under evaluation l.jpg
Devices currently under evaluation

Apple iPhone

Apple iPod Nano


Apple iphone l.jpg
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


Apple iphone closed captions pop on l.jpg
Apple iPhone:closed captions (pop-on)


Apple iphone closed captions roll up l.jpg
Apple iPhone:closed captions (roll-up)


Apple iphone open captions l.jpg
Apple iPhone:open captions


Apple iphone cc settings l.jpg
Apple iPhone:CC settings


Apple ipod nano l.jpg
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


Apple ipod nano closed captions pop on l.jpg
Apple iPod Nano:closed captions (pop-on)


Apple ipod nano closed captions roll up l.jpg
Apple iPod Nano:closed captions (roll-up)


Apple ipod nano open captions l.jpg
Apple iPod Nano:open captions


Apple ipod nano cc settings l.jpg
Apple iPod Nano:CC settings


Devices currently under evaluation29 l.jpg
Devices currently under evaluation

BlackBerry® Curve

8320™ Smartphone


Blackberry curve 8320 l.jpg
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



Devices currently under evaluation32 l.jpg
Devices currently under evaluation

  • HP iPAQ 210 PDA

  • HP iPAQ

    510 Voice Messenger


Hp 210 l.jpg
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




Hp 510 l.jpg
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



Devices currently under evaluation38 l.jpg
Devices currently under evaluation

  • Samsung BlackJack II

    (i617)


Samsung blackjack ii i617 l.jpg
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



Slide41 l.jpg

Part IV:

Upcoming work


What s next l.jpg
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


More information l.jpg
More information

  • Project Web site: http://ncam.wgbh.org/mm

    • project summary

    • prototypes of captioned media for various devices

    • device-comparison chart


ad