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Smear (Studio Version Only)
The Smear effect simulates motion blur in a clip by blending a user-definable number of frames.
— Frames Either Side: Determines the number of frames that are blended on either side of the current frame. For instance, entering a value of 2 uses two frames before and two frames after the current frame to create the effect.
— Luma Threshold: This control sets how bright a pixel must be to contribute to the smear effect. A lower value causes only darker pixels to be smeared. A higher value includes brighter pixels in the effect.
— Chroma Threshold: This control sets how saturated a pixel must be to contribute to the smear effect. A lower value causes only low saturated pixels to be smeared. A higher value includes more saturated pixels in the effect.
Stop Motion
This plugin is used to replicate the stuttering motion effect found in stop motion animations. Traditional stop motion animation exposes each frame of the shot individually, while the subject is manually moved in tiny increments between frames. An extremely labor intensive process, often individual frames were repeated in a shot to speed up the production which resulted in a staccato motion cadence.
Advanced Options
— Input Alpha: The choices in the Input Alpha menu determine how the Alpha channel is used for blending the frames. All options assume there is an Alpha channel present on the clip that has the Motion Trail applied.
— Ignore: This is the default option and will cause the alpha channel to be ignored. Disabling the Use Alpha checkbox when Ignore is selected will cause the Alpha to act as a stencil effect for the trails.
— Use in Compositing: This option uses the Alpha channel for the trails and compositing over the lower video track, assuming the Use Alpha checkbox is enabled.