Generates glows based on the distances from the edges of
the source input. Any edges in the input image, where the
brightness crosses the given threshold value, will generate an
equally bright glow into the darker side of the edges. This is best
observed when used on images with dark backgrounds.
In the Sapphire Lighting effects submenu.
Source: The current layer. The input clip that determines the glow locations
and colors. This clip is also used as the background and the glows are
layered back onto it.
Background: Defaults to None. The clip to combine the glows with. If no background is
given, the Source is also used as the Background.
Matte: Defaults to None. If provided, the source glow colors are
scaled by this input. A monochrome matte can be used to choose
a subset of Source areas that will generate glows. A color matte
can be used to selectively adjust the glow colors in different
regions. The matte is applied to the source before the glows are
generated so it will not clip the resulting glows.
- Brightness: Default: 0.8, Range: 0 or greater.
Scales the brightness of the glows.
- Color: Default rgb: [1 1 1].
Scales the color of the glows.
- Threshold: Default: 0.5, Range: 0 to 1.
Glows are generated at the edges of areas in the source
clip that are brighter than this value. A value of 0.9 causes glows
from only the brightest spots. A value of 0 causes glows for every
- Threshold Add Color: Default rgb: [0 0 0].
This can be used to raise the threshold on a
specific color and thereby reduce the glows generated on areas of the
source clip containing that color.
- Glow Width: Default: 36, Range: 0 or greater.
Scales the glow distance. This and all the width
parameters can be adjusted using the Width Widget. Note that a zero
glow width still enhances the bright areas; set the brightness
parameter to zero if you want to pass the Source through unchanged.
- Width Red: Default: 1, Range: 0 or greater.
Scales the red glow distance. If the red, green, and
blue widths are equal, the glows will be a single color given by the
Color parameter. If they are not equal, the glows will vary in color
- Width Green: Default: 1.2, Range: 0 or greater.
Scales the green glow width.
- Width Blue: Default: 1.4, Range: 0 or greater.
Scales the blue glow width.
- Affect Alpha: Default: 1, Range: 0 or greater.
If this value is positive the output Alpha channel will
include some opacity from the glows. The maximum of the red, green,
and blue glow brightness is scaled by this value and combined with
the background Alpha at each pixel.
- Glow From Alpha: Default: 0, Range: 0 to 1.
Set to 1 to generate glows from the alpha channel
of the source input instead of the RGB channels. In this case the glows
will not pick up color from the source and will typically be brighter.
Values between 0 and 1 interpolate between using the RGB and the Alpha.
- Glow Under Source: Default: 0, Range: 0 to 1.
Set to 1 to composite the Source input over the glows.
- Light Background: Default: 0, Range: 0 to 1.
Increase this to give a look of the glow casting light
onto the background image. To see this more clearly you can also
lower the Background Scale parameter or raise the Brightness
- Source Opacity: Default: 1, Range: 0 to 1.
Scales the opacity of the Source input when
combined with the glows. This does not affect the generation
of the glows themselves.
- Bg Brightness: Default: 1, Range: 0 or greater.
Scales the brightness of the background. This parameter
only has an effect if the background input is provided, and is
visible due to a partially transparent Source image or a reduced Source
Opacity parameter value.
- Invert Matte: Check-box, Default: off.
If on, inverts the Matte input so the effect is applied
to areas where the Matte is black instead of white. This has no effect
unless the Matte input is provided.
Popup menu, Default: Normal.
Determines the method used for dealing with
- All Opaque: Use this option to render slightly faster when
the input image is fully opaque with no transparency (alpha=1).
- Normal: Process opacity normally.
- As Premult: Process as if the image is already in
premultiplied form (colors have been scaled by opacity). This option
also renders slightly faster than Normal mode, but the results will
also be in premultiplied form, which is sometimes less correct.
- Show Glow Width: Check-box, Default: off.
Turns on or off the screen user interface for adjusting the
Opacity parameter.This parameter only appears on AE and Premiere,
where on-screen widgets are supported.
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