Glossary

Key Terms

Video Formats - Video is the technology of electronically capturing, recording, processing, storing, transmitting, and reconstructing a sequence of still images representing scenes in motion. Different video formats are used by different programs and/or operating systems. A few of the most popular formats for digital video are .avi (Microsoft), .mov (Quicktime), .wmv (Windows), and .flv (Flash). 

Streaming - This is a method of data transfer which involves a constant stream of data. An example of this is if you are watching a movie or video clip online, the data is being downloaded as you watch it. For example Ustream is a website where movies/video clips can be viewed online.

File Compression - Reducing the size of files for ease of storage and transfer. WinZip is an example of an application that compresses files. 

Aspect Ratios - The ratio of image width to image height. Common motion-picture ratios are 1.85:1 and 2.35:1. Television screens are usually 1.33:1 (also known as 4:3). 4:3 for standard systems, 5:4 for 1K x 1K, and 16:9 for HDTV.

Frame Rates - The rate at which frames are played or recorded.