Apple Compressor (4.0) - Manual (Page 157)

Chapter 7 Advanced functions 157
Brightness and Contrast
Alters the overall color and luminance values of your output media file to a brighter or darker
level. Some QuickTime codecs darken your video file, so you can use this filter to compensate.
Choose any number between –100 and 100, but avoid extreme settings, because they confer a
very washed-out quality.
The Brightness and Contrast filter contains the following controls:
•
Brightness: Adjusts brightness to any number between –100 and 100.
•
Contrast: Adjusts contrast to any number between –100 and 100.
Color Correct Highlights, Color Correct Midtones, Color Correct Shadows
Depending on which of these three filters you choose, corrects white balance inaccuracies and
creates color effects on the bright, midtone, or dark areas of your clip. You can adjust red, green,
and blue values independently between –100 and 100.
The three Color Correct filters contain the following controls:
•
Red: Adjusts the red value between –100 and 100.
•
Green: Adjusts the green value between –100 and 100.
•
Blue: Adjusts the blue value between –100 and 100.