Instructional designers have used video for years as a strategy to reach certain audiences or perhaps to teach or demonstrate certain topics more effectively. Another benefit of using video is that it has the asynchronous capacity to bridge the time and distance factor between learner and instructor.
Video is a powerful tool in the instructional designer's toolkit.
Some military studies have been done which show that video enhances communication. The most popular applications include distance learning, corporate training, sales presentations, video conferencing and for use in kiosks.