Broadcast Colors effect
Note: The Color Finesse plug-in included with After Effects
includes excellent tools that can help you keep your colors within
the broadcast-safe range. For more information, see the Color Finesse
documentation in the following folder: Adobe After Effects CS3/Additional
Documentation/Color Finesse 2.
The Broadcast Colors effect alters pixel color values to keep signal amplitudes within the range allowed for broadcast television.
Use the Key Out Unsafe and Key Out Safe settings for How To Make
Color Safe to determine which portions of the image will be affected
by the Broadcast Colors effect at the current settings.
Note: A more
reliable way to keep colors within the broadcast-safe range for
your output type is to use color management features to set the
output color profile accordingly, such as to SDTV (Rec. 601 NTSC).
This ensures that color values between 0.0 and 1.0 in your working
color space are converted to broadcast-safe values. (See Broadcast-safe colors.)
This effect works with 8-bpc color.
- Broadcast Locale
- The broadcast standard for your intended output. NTSC (National Television Standards Committee) is the North American standard and is also used in Japan. PAL (Phase Alternating Line) is used in most of Western Europe and South America.
- How To Make Color Safe
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How to reduce signal amplitude:
- Reduce Luminance
- Reduces a pixel’s brightness by moving it toward black. This setting is the default.
- Reduce Saturation
- Moves the pixel’s color toward a gray of similar brightness, making the pixel less colorful. For the same IRE level, reducing saturation alters the image more noticeably than does reducing luminance.
- Maximum Signal
- The maximum amplitude of the signal in IRE units. A pixel with a magnitude above this value is altered. The default is 110. Lower values affect the image more noticeably; higher values are more risky.
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