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Adapting Video for VI Learners

Design Issues

We start by suggesting some design issues and approaches: general design principles for producing video which attend to VI needs. You'll see these scattered around in other sections: we bring them together here as reminders about perceptual issues; designing in support for supplementary information such as text and speech; and how to capitalise on new presentation modes such as interactive choice between multichannel video streams, and when to exploit branching.

Technologies and techniques

  • Digital Versatile Disc has multichannel sound, extra graphical tracks and interactivity.

    Colleges could be developing VI-friendly video-rich multimedia and creating VI-friendly Web materials. They will probably be doing this using CD-ROM and/or access to the Web.

    The video clips used in multimedia, Web materials and on DVD and CD-Rom have a lot in common, and we'll discuss these techniques together, touching on graphical and textual as well as technical aspects of their use.

    One theme will keep recurring: plan for the future by creating richer assets than you think you need. In practical terms this means that even if you are presently working in a more traditional format like VHS, assume that you will soon be called on to rework your programme into a more powerful, non-linear format with much better support for VI students. When that happens, you'll be glad you took those close-ups, multiple camera views, and high quality still shots.