User Guide

324 Glossary
program stream Stream containing multiplexed video and audio. Compare with elementary
stream.
progressive scanning Method for displaying a video signal on a computer monitor (and on
high-definition television). In a progressive scanning system, each scan line is displayed in
sequence. To prevent flicker, the scanning frequency must be twice that of a standard
television, but this produces a higher quality picture. Compare with interlaced scanning.
project file File that tells Product Name where all the video, audio, and graphics in a DVD
project are located, and how to assemble and process them to create a DVD disc. This file
has the extension .dvd.
QuickTime Software standard for playing compressed, full-motion video with synchronized
audio. Developed by Apple Computer, Inc.
resampling Process of converting a digital image from one resolution (size) to another.
resolution Size (width by height) of a digital image, measured in pixels.
RGB The red-green-blue color model used in computer monitors. The color of each pixel in
an image is made up of a red component, a blue component, and a green component,
because these are the three colors that the human eye can perceive. In a full-color (24 bits
per pixel) image, each component can be one of 256 values, from zero (darkest) to 255
(lightest). If all three components have a value of zero, the pixel is perceived as black. If all
three components have a value of 255, the pixel is perceived as white. Compare with YUV.
rip To extract music from an audio CD to a computer hard drive.
sample rate Number of times per second that a digital sample is taken of an analog audio
source. Expressed in kHz. The sample rate for audio CDs is 44.1 kHz; for DVD-Video, the
sample rate is 48 kHz. Higher sample rates result in a more accurate reproduction of the
original sound.
sample size Number of bits allocated to each digital sample of an analog audio source.
Larger sample sizes result in greater dynamic range and better reproduction of the original
sound. DVD-Video uses sample sizes of 16, 20, or 24 bits.