Glowing light is generated from areas of the source clip that are brighter
than the given threshold. Raise the threshold parameter to produce glows
in fewer areas. Adjust the Width RGB parameters to make glows with
different color falloffs, and adjust the Width XY parameters to make
horizontal or vertical glows.
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: 2, Range: 0 or greater.
Scales the brightness of all the glows.
- Color: Default rgb: [1 1 1].
Scales the color of the glows. The colors and brightnesses
of the glows are also affected by the Source and Matte inputs.
- Threshold: Default: 0, Range: 0 to 1.
Glows are generated from locations in the source clip
that are brighter than this value. A value of 0.9 causes glows at
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 X: Default: 1, Range: 0 or greater.
Scales the horizontal glow width. Set to 0 for vertical only.
- Width Y: Default: 1, Range: 0 or greater.
Scales the vertical glow width. Set to 0 for horizontal only.
- Width Red: Default: 1, Range: 0 or greater.
Scales the red glow width. If the red, green,
and blue widths are equal, the glows will match the color of the
source clip. If they are not equal, the glows will vary in color with
- 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.
- Subpixel: Check-box, Default: off.
Enables glowing by subpixel widths. Use this for
smoother animation of the Width parameters.
- 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.
- Expand Borders: Check-box, Default: off.
If enabled, transparent borders are added to the
input image before processing. This allows the result to include soft
edges beyond the original image size. When off, the effect only
occurs within the frame and the result will retain an edge
at the borders. This parameter does not appear in FCP or DF because
those applications don't support image expansion.
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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