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THE WAY I SEE IT: DVD: The new library video format?

by Gary Bravy

About the author

Gary Bravy is the media/reference librarian at Georgetown University Law Center Library, e-mail: bravy@wpgate.law3. georgetown.edu

DVD—Digital Video Disk—has become the new entertainment buzzword. Newspapers and magazines are filled with articles and advertisements about the format, seemingly implying that the ‘-inch VHS tape format (the standard in many libraries) is essentially doomed to obsolescence.

While DVD has many advantages for serious film lovers, what, if any, unique characteristics of the format will be suitable for library and educational purposes?1 Promises of greatly improved video resolution and multiple channels of sound are certainly interesting; however, the criteria by which librarians and educators evaluate video formats are different from those that deal with the optimal presentation of theatrical films.

Although VHS is looked down upon by video purists, it does offer some strong advantages: the format is inexpensive, relatively durable, and both software and hardware are widely available.

While VHS video is not of terribly high quality, in many situations that limitation is not a detraction from the training and educational properties of the format. Because VHS has been the standard for some time, huge amounts of software for both education and entertainment are available.

DVD’s features

DVD is a digital format that looks like a CD; the computer version of DVD is referred to as DVD-ROM.2 (This article will be primarily concerned with DVD used in a “set top” or “viewing station” context, much in the way that current VHS cassettes are used.)

DVD can store about two hours of highquality video. Sound can be encoded in theater formats with standard stereo sound and a variety of other formats. Discs can be either oneor two-sided.3 Because the format is digital, it does not need to be used in a strictly linear manner; with appropriate programing, a somewhat interactive ambiance can be created.4

For educational applications, one of DVD’s more intriguing features is the potential to present multiple views of a scene. For some material, the ability to see a process or object from various aspects and the enhanced video quality of DVD may be especially appealing.

Finally, because the format is new, it could very well be used in ways that are hard to visualize at this point. Simply as a format, DVD is a flexible and multidimensional product with awesome technical and creative potential beyond anything VHS can offer.5 Nevertheless DVD may not become the standard format for the next decade.

Should libraries continue to purchase VHS material?

Although DVD is extremely intriguing, its possibilities at this point as a video format for educational purposes are generally untested and unknown. While this article is limited to consideration of the use of DVD in a set top situation, that limitation may be unrealistic, particularly as more experience is gained with using it.

Libraries and media centers may find, at least until the middle or end of the next decade, that they have a variety of formats available, some of which may be computer-based (with VHS continuing to play an important role for many programs), while DVD will be used to provide interactivity, multiple views, and higher resolution for those programs that need those qualities. It may well be that the increased capabilities of technology could lead to a situation where there is no standard format. The definition of a video may also evolve from that of a linear program viewed through a player with very limited manipulative capabilities to a much broader definition embracing multimodal and multimedia concepts.

Given the rapid pace of technology, predicting the future of video in libraries is speculative at best. There has been nothing to indicate that, at least for the next five years or possibly longer, DVD will make the VHS format obsolete. Library and media professionals can continue to purchase materials in the VHS format without fear. In the long term, video will become a primarily digital medium; almost surely DVD in some form will play a part in this transition.

Notes

  1. One of the primary reasons for developing DVD was to allow home video users to take advantage of the independent surroundand low-frequency effects [LFE] channels available in theatrical sound formats.
  2. There are also “hybrid” disks that can be used in both computers and players as well as a projected DVD-audio format. A version will probably be developed that is fully compatible with the new high definition (HDTV) standard. The format is still evolving.
  3. Additional technical information about DVD can be found at DVD Frequently Answered Questions at http://www.videodiscovery.com/vdyweb/ dvd/dvdfaq.html.
  4. That interactivity does not necessarily come easily, see Philip De Lande and “Shadoan Reborn,” E Media Professional 12 (January 1999): 51.
  5. For some indication of the potential of DVD using a full-featured player see: Robert A. Starrett, “Pioneer DVD-V7200 Industrial DVD-Video Player” E Media Professional 12 (March 1999): 33. ■
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