System information
Frame Rate (Video)
The speed at which individual images in the video are displayed on the screen during playback. A faster
frame rate results in smoother motion in the video. The television frame rate in the US (NTSC) is 29.97
frames per second (fps). In many parts of Europe and Japan, the television standard is PAL at 25 fps.
Frequency Spectrum
The Frequency Spectrum of a signal refers to its range of frequencies. In audio, the frequency range is
basically 20 Hz to 20,000 Hz. The frequency spectrum sometimes refers to the distribution of these
frequencies. For example, bass-heavy sounds have a large frequency content in the low end (20 Hz - 200
Hz) of the spectrum.
G
Gamma
Determines the brightness of the video and is used to compensate for differences between the source and
output video and sometimes needs to be calibrated to match the source or destination. Higher gamma
values result in lighter or brighter video as displayed on your computer's monitor.
Gamut
Gamut refers to the complete range of something. In video editing, you want to ensure that your colors are
within the acceptable range for your broadcast standard. When colors are outside the NTSC or PAL gamut,
you can introduce image problems or noise into the video stream. You can use the video scopes to analyze
your video before rendering and correct out-of-gamut colors with video plug-ins. For more information, see
"Monitoring Video with Scopes" on page 481.
When you're using the color picker, a warning is displayed when you choose an out-of-gamut color.
Click the color swatch below the warning to correct the color.
H
Hertz (Hz)
The unit of measurement for frequency or cycles per second (CPS).
GLOSSARY639