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Multimedia: Problems and Opportunities

Multimedia: Problems and Opportunities. OZeWAI 2002. Presenters. John McKenna, Telstra Brendan Wylie, PC Ephone Andrew Arch, Vision Australia Foundation Charles McCathieNevile, W3C. Web on the Move. John McKenna Brendan Wylie. The Web on the Move. PC –EPhone CDMA mobile phone

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Multimedia: Problems and Opportunities

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  1. Multimedia:Problems and Opportunities OZeWAI 2002

  2. Presenters • John McKenna, Telstra • Brendan Wylie, PC Ephone • Andrew Arch, Vision Australia Foundation • Charles McCathieNevile, W3C OZeWAI

  3. Web on the Move John McKenna Brendan Wylie

  4. The Web on the Move • PC –EPhone • CDMA mobile phone • 640x480, 256 colour, 2000dpi TFT LCD • Windows CE • Internet Explorer • Pocket Word • PIM software • Email software http://www.pcephone.com.au/ OZeWAI

  5. Multimedia Accessibility What Can Be Done(How Do We Record It) Andrew Arch

  6. What is Multimedia? • Graphics • GIF, JPEG, PNG • Scalable Vector Graphics (SVG) • Audio • Video • QuickTime • Realmedia • Interactive objects • Flash • Shockwave OZeWAI

  7. Accessible Multimedia • Alt text • Transcripts • Multilingual audio tracks and captions • Described images & actions • Text to speech conversion • Multi-device access, eg. keyboard navigation OZeWAI

  8. SMIL & SVG • Synchronised Multimedia • use for TV-like multimedia presentations • can synch auditory tracks and transcripts • MAGpie from WGBH is freehttp://ncam.wgbh.org/webaccess/magpie/index.html • Scaleable Vector Graphics • describes 2-dimensional graphics in XML • images scale, unlike GIF, JPG, PNG • text is text, not graphics • can consume bandwidth OZeWAI

  9. SMIL & SVG • Demonstrations • SVG • www.adobe.com/svg/demos/main.html • SMIL • ncam.wgbh.org/richmedia/showcase.html • realnetworks.com/resources/realoneplayer/demostutorials.html OZeWAI

  10. Flash • Issues • non-mouse access • audio • images and video • interactivity • player required • assistive technology access • Resources • Macromedia accessibility http://www.macromedia.com/macromedia/accessibility/features/flash/ OZeWAI

  11. Flash MX & Player 6 • Accessibility enhancements • Microsoft Active Accessibility • Reveals regular text to screen readers • JFW 4.5; WindowEyes 4.2 • Alt text and button names • Tab order and reading order is settable • Object grouping • Captioned video • Font and colour can be set • The Learning Federation requires high levels of accessibility for their Learning Objects OZeWAI

  12. Cataloguing Multimedia for Accessibility • W3C EARL • IMS Global • Dublin Core OZeWAI

  13. W3C EARL • Evaluation and Report Language • RDF based framework for recording, transferring and processing data about resources • A notation for recording and sharing evaluations http://www.w3.org/WAI/ER/intro.html OZeWAI

  14. Dublin Core • DC.Accessibility • Looking for ways to use DC metadata to aid identifying accessible resources as part of resource discovery • DC metadata is very pervasive, especially within Government • DC 2002 – “digital libraries are there to make information accessible” hence accessibility is an issue for the DCMI community http://www.dublincore.org/groups/access OZeWAI

  15. IMS Global - Metadata • IEEE Learning Object Metadata (LOM) Draft Standard defines a set of meta-data elements that can be used to describe learning resources • IMS developed a representation of the meta-data in XML • Moving to convergence with DC • Working on accessibility elements http://www.imsglobal.org/metadata/index.cfm OZeWAI

  16. IMS Global - LIP • Learner Information Packaging • Includes accessibility information such as ‘learner preferences’, ‘language information’, ‘disability/accessibility information’ and ‘technical/physical preferences’ • XML based • Students will be able to select materials or modules according to their disability profile http://www.imsglobal.org/profiles/primer1.html OZeWAI

  17. IMS Global - Accessibility • Guidelines for developing accessible learning applications • Text, audio, images, multimedia • Asynchronous communication and collaboration tools • Synchronous communication and collaboration tools • Interfaces and interactive environments • Testing and assessment • Authoring tools http://www.imsglobal.org/accessibility/accv1p0/imsacc_guidev1p0.html OZeWAI

  18. The Learning Federation • Accessible multimedia learning objects • Metadata for resource discovery, including accessibility description • Student profiles, including disability and technology http://www.thelearningfederation.edu.au OZeWAI

  19. Multimedia - Usability & Accessibility Charles McCathieNeville

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