Institute for Telecommunication Sciences / Research / Quality of Experience / Video Quality Research / Guides and Tutorials / Video Resources / Tools for Video Quality in Public Safety / Guide to Defining Video Quality Requirements / Generalized Use Class Aspects / GUC Aspects - Usage Timeframe
VQiPS Usage Timeframe
Definition
Specifies whether the video will be used in real-time or will be recorded. Sometimes the same camera is used for both live surveillance and recorded evidence. In this case, it is important to examine both uses separately to develop requirements.
Live Usage
Live video is used for real-time applications such as, live surveillance or live tactical control of a situation.
Future Usage
Recorded video is stored for later use such as, for evidence in a case. Recorded video carries with it the ability to rewind, freeze, zoom, and further process the capture. Conversely, live video that is not stored carries no capture progress control and is used only in real-time.
Use Characteristics
