Iris Input Parameters
Parameter Type
Description
The Input parameters for the Iris effect create a wipe transition. For more information, see Iris.
Use of Controls
Amount
Sets the proportion of each clip to be displayed. A value of 0 displays all of the foreground clip; a value of 100 displays all of the background clip. Typical keyframing would be from 0 at the first keyframe to 100 at the last keyframe.

Softness
Sets the size of the area over which the pixels are faded from the foreground clip to the background clip.

X, Y
Sets the center of the iris wipe.

Swap Sources
Specifies whether to apply the effect to incoming or outgoing video.
  This parameter is not keyframeable.

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