HD

Glossary 1079
audio meter A meter that lets you monitor audio output levels from your computer.
You use the audio meters in Final Cut Express HD when you capture, mix, and output
your program.
audio track A track in the Timeline into which you can edit audio clip items.
Audio Units The standard real-time audio filter format for audio applications running
on Mac OS X.
Auto Render A feature that allows Final Cut Express HD to render open sequences
whenever a specified number of idle minutes have passed.
average loudness The average audio level in decibels. Determines the apparent
volume of an audio signal to a listener.
averaging meter A meter that displays the average audio level. Unlike peak meters,
which always show the exact level of an audio signal including every peak, averaging
meters have weighted ballistics so that they give a more readily apparent
representation of the average loudness of an audio signal.
AVI (Audio-Video Interleaved) Microsoft’s older standard format for digital video.
axis The pitch, roll, and yaw of a camera shot determines its axis. In an edited
sequence, the axis can be used to determine visual continuity from shot to shot.
back light A light source that comes from behind and above the subject. It outlines
the subject and differentiates it from the background. Also called a rim light.
batch capture A process in which previously logged clips’ media is captured from a
VTR or camcorder to your hard disk. The timecode in each clip is used to automatically
cue source tapes, using remote device control, to the location of each clip.
batch recapture A process in which you recapture, at a higher resolution, the parts of
logged clips that you actually use in your sequences. Helps to conserve disk space.
Bezier curve In its simplest form, a line defined by two end points and two associated
control points, or “handles”. Pulling the control points adjust the line into a curve.
Named after Pierre Bezier, who discovered the mathematical formula for these curves.
In Final Cut Express HD, Bezier curves are used to adjust keyframed effects and to
create curves in motion paths.
Bezier handles Controls that let you modify the curve of a line segment between a
handle and the next point on either side of it. The farther a handle is dragged from its
vertex point, the more it bends or curves the line segment. Used for smoothing keyframes.
bin A container (or folder) inside of the Browser that can contain clips, sequences,
transitions, effects, and generators. You use bins to organize these elements, sort them,
add comments, rename items, and so on.