DVDs are designed for random access and built-in interactivity. Figuring out how to use these navigational opportunities most effectively for a given DVD title is, in large part, what makes the DVD production process different from that of linear video format and interactive CD-ROM.

Another crucial distinction between these two formats is ability to support detailed graphical elements of computer graphics vs. video graphics, because interlaced video can create all kinds havoc on text and graphic elements. The real problem comes when the client wants to put equal emphasis on both set-tops and computers.

Good information architecture is important for any interactive project. The goal is a user experience that lets them get anywhere within the content with the least number of clicks – especially when navigating with a remote. Remote-versus-mouse has a ripple effect on the function, graphic design, and programming of the menus. The design and functionality of menu structure is extremely important when creating a DVD. For our customers, this functionality is generally what makes the difference between using DVD and using videotape. Here are a few design considerations when planning your own DVD menus structure:

Make important states explicit: Provide more feedback so the user knows what has been selected and what is happening. Make it easy to back out -- return to the previous spot -- if the new page is not what was wanted.

Speed up the transitions: Rapid response improves the user experience. Unnecessary animations detract from the experience after the first showing. With the careful use of motion, any effect that you can create in video can be used as a transitional element."

Develop interactive standards for selection and cursor movements, perhaps for other parts of the experience.

Have the user test the result: Ask average viewers to do simple things, such as find a scene of interest. Ask them to change DVD settings, etc.

Consider accessibility: the principles discussed in the NN Group's recent guidelines for making websites and intranets easier to use for users with disabilities also apply to DVDs.

Tim Desley – Creative Director
KDG InterActive - an award winning marketing, communications and training firm.
www.kdg.com