S_EdgeFlash Adds a glow from the Front clip onto the Back clip, and vice versa, then composites the Front over the Back. This can be used to make a composite look more natural with light flashing between the layers as if exposed on film together. In the Sapphire Composite effects submenu. Inputs: Foreground:  The clip to use as foreground. Background:  The clip to use as background. Matte:  Optional.   The alpha channel of this input specifies the opacities of the Foreground input. If this input is not provided, the alpha channel of the Foreground input is used instead. This input can be affected by the Invert Matte or Matte Use parameters.

Parameters:

Fg Flash Amp:   Default: 0.8,  Range: 0 or greater.
The amount of flashing from the Front onto the Back.

Bg Flash Amp:   Default: 0.8,  Range: 0 or greater.
The amount of flashing from the Front onto the Back.

Flash Width:   Default: 0.022,  Range: 0 or greater.
The width of the flashing. This parameter can be adjusted using the Flash Width Widget.

Fg Lights:   Default: 1,  Range: any.
Scales the Front input by this value. Increase for a brighter result

Fg Darks:   Default: 0,  Range: any.
Adds this gray value to the darker regions of the Front input. This can be negative to increase contrast.

Fg Saturation:   Default: 1,  Range: 0 or greater.
Scales the color saturation of the Front input. Increase for more intense colors. Set to 0 for monochrome.

Bg Lights:   Default: 1,  Range: any.
Scales the Back input by this value. Increase for a brighter result

Bg Darks:   Default: 0,  Range: any.
Adds this gray value to the darker regions of the Back input. This can be negative to increase contrast.

Bg Saturation:   Default: 1,  Range: 0 or greater.
Scales the color saturation of the Back input. Increase for more intense colors. Set to 0 for monochrome.

Output:   Popup menu,  Default: Comp.
Selects between different output options.

Foreground:  outputs only the Front clip with flashing from the Back.

Background:  outputs only the Back clip with flashing from the Front.

Comp:  flashes both, composites the Front over the Back, and outputs the result.

Subpixel Widths:   Check-box,  Default: off.
Enables flashing by subpixel amounts. Use this for smoother animation of the flash width.

Comp Premult:   Check-box,  Default: on.
Disable this if you have provided a separate Matte input and the Foreground pixel values have not been pre-multiplied by this Matte.

Matte Use:   Popup menu,  Default: Alpha.
Determines how the Matte input channels are used to make a monochrome matte.

Luma:  the luminance of the RGB channels is used.

Alpha:  only the Alpha channel is used.

Invert Matte:   Check-box,  Default: off.
If enabled, the black and white of the matte are inverted before use.

Show Flash Width: Check-box, Default: on.
Turns on or off the screen user interface for adjusting the Flash Width parameter.

See Also:

Blur EdgeBlur EdgeDetect Glow

Sapphire Plug-ins Introduction

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