Video recording

This thesis presents a survey of multimedia networks and the techniques to improve the capacity of video on demand systems. A survey was conducted and comparative evaluation was done to determine the multimedia capabilities of various networks. Video on demand is an electronic video rental system in which clients request and play videos on-demand. Video on-demand system can be implemented over an existing cable TV network or an upgraded ADSL network. The two techniques used to improve the capacity of video on-demand systems are segmentation and multicasting. Segmentation consists of dividing the video into several fixed length segments, and then transmitting the segments at regular intervals instead of transmitting the video continuously. With multicasting, more than one user requesting the same video are served by a single video stream. Multicasting further assumes that each subscriber has a limited storage space, so same video segments can be multicast to subscribers simultaneously even if the requests for a video are not synchronous.

This thesis surveys the uses of videotape in the business and industrial
setting, citing several cases of successful use of the medium
in training and development applications. Data from a survey of a
selected sample of the membership of the American Society for Training
and Development is presented. These data indicate uses of videotape
and the subjective evaluations of the respondents of the effectiveness
of the medium in sales training, safety training, operations
or production training and management development applications. Two
objective studies of the effectiveness of videotape are presented.
These studies, carried out by the author, involve safety training and
production training.