Tapes are more easily produced and, unlike discs, do not require broadcast-quality video equipment or mastering at an external facility. These drawbacks may be overcome by using videodiscs. The disc frames can be accessed singly or by continuous playing. When played continuously, the disc stores 30 minutes of video per side and 30 minutes of audio on each of 2 audio tracks per side. The basic configuration for learner interaction with video features an interactive video station into which learners enter responses and from which they receive information.
Computer programs provide text, graphics, and an operating system.
This step includes assessing needs and reviewing current methods of instruction, defining goals, analyzing tasks, and organizing and sequencing learning behaviors. The use of storyboards allows for successive review and revision before expensive production is begun at this point in the process. This step includes selecting field sites, determining facility and equipment needs, and training instructional staff. Techniques may include pretesting, computer analysis of performance data, and postinstructional interviews and tests. In developing interactive video materials, the storyboard is used as a guideline for the production of graphics, video, audio, computer text, and computer programs.