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 current layer.   The clip to use as foreground. Background:  Defaults to None.   The clip to use as background. Matte:  Defaults to None.   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: 8,  Range: 0 or greater.
The width of the flashing.

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 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.

Opacity:   Popup menu,  Default: Normal.
Determines the method used for dealing with opacity/transparency.

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 Flash 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.

See Also:

Blur EdgeBlur EdgeDetect Glow Sapphire Plug-ins Introduction

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