Operation Manual

Appendix
171
GOP pattern (Group of Pictures pattern) A pattern in MPEG
encoding made up of groups of pictures
(consisting of I-, B-, and P-frames), which have
certain dependent relationships during
encoding. Changes to this pattern can cause
playback errors in some players.
hold time Used to describe the time a moving effect (PiP
or title effect) remains stationary on the screen.
HQ (High Quality) The highest video quality you
may select in PowerDirector.
hue The attribute of a color that distinguishes it
from other colors.
interlacing Flickering or artefacts caused by the way video
signals are broadcast. (Each frame of video is
made up of a number of lines. When video
frames are broadcast, the odd lines of the
screen display are illuminated first, then the
even lines. This causes the interlacing problem,
which is most evident when the video contains
motion.)
key frame A key frame is defined as a frame in a video
sequence that does not require information
from a previous frame for decompression.
More key frames yield better video quality but
require greater amounts of disk space.
LP (Long Play) The lowest video quality you may
select in PowerDirector.
menu A page on a DVD that contains links to the
chapters the DVD contains.
Term Description