DropShadow Generates a shadow on the Back clip using the Matte clip, then composites the Front over the Back to give the final result. Inputs: Front: foreground clip to composite over the background. Back: The clip to use as background. Matte: Specifies the opacities of the Front clip. Only the red channel of this input is used.

Parameters:

Load Preset: Push-button .
Brings up the Preset Browser to browse all available presets for this effect.

Save Preset: Push-button .
Brings up the Preset Save dialog to save a preset for this effect.

Shift: X & Y,   Default: [0.0278 -0.0309], Range: any.
The horizontal and vertical offset of the shadow, in pixels. This parameter can be adjusted using the Shift Widget.

Blur: Default: 0.1, Range: 0 or greater.
Determines the softness of the shadow.

Color: Default rgb: [0 0 0].
The color of the shadow.

Opacity: Default: 1, Range: 0 or greater.
The opacity of the shadow, use values near 0 for subtle transparent shadows, or values near 1.0 for stronger shadows.

Front Opacity: Default: 1, Range: 0 or greater.
Scales the opacity of the Front input without affecting the shadow. Lowering this can be used to fade out the foreground, or setting it to zero prevents the foreground from being composited over the result at all.

Comp Premult: Check-box,  Default: off.
Enable this for a better composite if the Foreground pixel colors have been pre-multiplied by their Matte values. This is also known as an 'additive' composite.

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

Params2:

Params3:

Mocha: Default: 0, Range: 0 or greater, Shared .
Brings up the Mocha window for tracking footage and generating masks.

Blur Mocha: Default: 0, Range: 0 or greater, Shared .
Blurs the Mocha Mask by this amount before using. This can be used to soften the edges or quantization artifacts of the mask, and smooth out the time displacements.

Mocha Opacity: Default: 1, Range: 0 to 1, Shared .
Controls the strength of the Mocha mask. Lower values reduce the intensity of the effect.

Invert Mocha: Check-box,  Default: off, Shared .
If enabled, the black and white of the Mocha Mask are inverted before applying the effect.

Show Mocha Only: Check-box,  Default: off, Shared .
Bypass the effect and show the Mocha Mask itself.

Bypass Mocha: Check-box,  Default: off, Shared .
Ignore the Mocha Mask and apply the effect to the entire source clip.

See Also:

Blur Sapphire Plug-ins Introduction