Operation Manual

265
Glossary
Last updated 10/4/2016
final cut The final video production, assembled from high-quality clips, and ready for export to the selected delivery
media. Compare to rough cut .
FireWire The Apple® Computer trade name for IEEE 1394 .
fps Frames per second; the standard for measuring the rate of video playback. At 15 fps and lower, the human eye can
detect individual frames, causing video to appear jerky.
frame A single still image in a sequence of images that, when displayed in rapid succession, creates the illusion of
motion. The more frames per second (fps), the smoother the motion appears.
frame rate The number of frames per second displayed during playback.
frames per second See fps .
frequency The number of audio cycles per second, expressed in hertz (Hz). Frequency determines the pitch of a sound.
gamut The range of color or brightness values allowed for a video signal. Values that exceed the gamut may cause
distortion.
grayscale The series of visual tones that range from true black to true white. In video applications, grayscale is usually
expressed in 10 steps.
GPU Graphics processing unit. A microprocessor with built-in capabilities for handling 3D graphics more efficiently
than a CPU (central processing unit).
HDTV High Definition TV. A broadcast format that allows for a higher resolution signal than the traditional formats,
NTSC, PAL, and SECAM.
HDV High Definition Video. The format used to record HDTV-quality data with video camcorders.
hue The distinction between colors (for example, red, yellow, and blue). White, black, and gray tones are not
considered hues.
IEEE 1394 The interface standard that enables direct transfer of DV between devices, such as a DV camcorder and a
computer. IEEE 1394 also describes the cables and connectors utilizing this standard. Also called FireWire or i.LINK.
See also USB .
i.LINK Sony® trade name for IEEE 1394.
image stabilizer Also referred to as electronic image stabilizer. A technique used to remove the movement caused by
camera shake.
interframe compression A compression scheme, such as MPEG, that reduces the amount of video information by
storing only the differences between a frame and those preceding it.
interlacing A system developed for early TV and still in use in standard TV displays. An electron gun illuminates the
phosphors coating the inside of the screen, first drawing the even, and then drawing the odd horizontal lines across the
screen. By the time the even lines are dimming, the odd lines are illuminated. We perceive these interlaced fields as
complete pictures.
interpolation A method for establishing new data points between known data points.
J-cut An edit in which the audio starts before the video, giving the video a dramatic introduction. Also known as an
audio lead.
JPEG Joint Photographic Experts Group. Also, a file format defined by that group for compressing still images. Because
video is a sequence of still images, JPEG compression can be used to compress video. See also MJPEG .
key A method for creating transparency, such as a bluescreen key or a chroma key.