Apple Compressor (4.1.2) - Manual (Page 75)

Chapter 5 Advanced tasks 75
Turn an effect off or on
After adding an effect to a setting, you can turn its properties off or on. This can be useful when
previewing an effect.
m Click the blue activation checkbox next to the effect properties. When the checkbox is blue, the
effect is turned on. When the checkbox is black, the effect is turned off.
Remove an effect from a setting
m Choose a checkmarked item from the Add Video Effect pop-up menu (at the bottom of the
Video inspector) or the Add Audio Effect pop-up menu (at the bottom of the Audio Inspector).
The effect’s properties are removed from the list below the pop-up menu.
Video effects
Choose a video effect from the Add Video Effect pop-up menu in the Video inspector:
•
Black/White Restore: Compresses the solid black and white areas (luminance) in the video, such
as backgrounds. This effect can restore nearly black colors to pure black and restore nearly
white colors to pure white without affecting colors in the rest of the image. Drag the sliders to
set the black and white values between 0 and 100. (You can also double-click the values and
type new values.)
•
Brightness and Contrast: Brightens or darkens the overall color and luminance of the video. For
example, use this effect to counteract the darkening to video that some QuickTime codecs can
cause. It’s recommended that you avoid extreme settings, because they can make colors look
washed-out. Drag the sliders to set brightness and contrast values between –100 and 100. (You
can also double-click the values and type new values.)
•
Color Correct Highlights, Color Correct Midtowns, Color Correct Shadows: Correct white balance
inaccuracies and create color effects on the bright, midtone, or dark areas of the video. Drag
the sliders to set red, green, and blue values between –100 and 100. (You can also double-click
the values and type new values.)
•
Fade In/Out: Adds a dissolve and a matte color at the beginning and end of the clip. This effect
has the following properties:
•
Fade in duration/Fade out duration: Enter a time (use a decimal to specify tenths of seconds)
in the text field to set the duration of the fade-in and fade-out effects.
•
Fade in opacity/Fade out opacity: Drag the sliders to set the opacity of the clip’s video at the
first and last frames. (You can also double-click the values and type new values.) A value of
0.0 sets the clip video to be completely covered by the matte color; a value of 0.5 sets the
clip to be 50 percent covered by the matte color; and so on.
•
Fade color: Click the color well to set the fade-in and fade-out color.
•
Gamma Correction: Controls the range of brightness in an image. This effect can be used to
remove detail from an underexposed clip or to reduce the saturation of an overexposed clip.
Drag the slider to set gamma values between 0.1 and 4.0. (You can also double-click the value
and type a new value.)
Note: Computers using different operating systems have different monitor settings. For cross-
platform viewing, correcting the gamma will improve the image for all platforms.
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