Glossary of Terms
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A
antialiasing
A method for smoothing the jagged edges (stair steps) often seen in graphics
or video. The method reduces the jagged edges by placing intermediate
shades of color or gray around the steps.
ASF
Active Streaming Format. A Microsoft file format for digital video playback
over the Internet, or on a standalone computer. Kind of a wrapper around any
of a number of compression types, including MPEG. Part of Netshow, a proprietary
streaming media solution from Microsoft. Biggest competitor is Real Networks.
While this 'wrapper' support many standard formats, ASF files are themselves
proprietary.
auto-tracking
Feature of a Pan/Tilt/Zoom camera that enables it to follow a speaker either by voice detection
(usual), by a color pattern recognition or by Radio signals (rare). Helps to allow the speaker to move
freely during a videoconference.
AVI
Audio Video Interleaved. A Microsoft format for digital audio and video playback
from Windows 3.1 Somewhat cross-platform, but mostly a Windows format. Has
been replaced by the ASF format, but still used by some multimedia developers.
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