BlurMotionCurves Performs a motion blur and optionally transforms the source clip using the animated curves of the Z Dist, Rotate and Shift parameters. If these parameters are constant, no motion blur will occur. Inputs: Source:  The clip to be processed.

Parameters:

Effect:   Popup menu,  Default: Transform and Blur.
Allows disabling of the transformation.

Transform and Blur:  transforms the Source as well as blurring.

Blur Only:  this can be useful if the motions have already occurred. The curves are used only to apply the corresponding motion blur in place, and no transformation is performed.

Z Dist:   Default: 1,  Range: 0.001 or greater,  Shared.
The 'distance' of the image from the camera, about the Center position. The rate of change of this parameter is also used for the motion blur. Values greater than 1.0 move it farther away and make it smaller. Values less than 1.0 move the image closer and enlarge it. This parameter can be adjusted using the Transform Widget.

Rotate:   Default: 0,  Range: any,  Shared.
Rotates the image by this amount in degrees, about the Center. The rate of change of this parameter is also used for the motion blur. Note that for high rotation speeds, the motion blur will become less accurate. This parameter can be adjusted using the Transform Widget.

Shift:   X & Y,   Default: [0 0],  Range: any,  Shared.
Translates the source image by this amount. The rate of change of this parameter is also used for the motion blur. It is in screen coordinates for easy use with tracker data. This parameter can be adjusted using the Transform Widget.

Center:   X & Y,   Default: [0 0],  Range: any,  Shared.
The center of rotation and zooming, in screen coordinates relative to the center of the frame. The shift values should be zero for this location to make sense. This parameter can be adjusted using the Center Widget.

Shutter Duration:   Default: 1,  Range: 0 or greater,  Shared.
The amount of time, in frames, to apply the motion blur over. Larger values cause more blurring, smaller values cause less. The curves are sampled at plus and minus half of this value.

Shutter Shift:   Default: 0,  Range: any,  Shared.
The time-shift in frames of the motion blur. If the Shutter Speed is 1.0 and Shutter Shift is 0, the blur is calculated between the current frame -.5 and +.5. If the Shutter Shift is instead .5 then the motion blur would be calculated between the current frame and the next frame.

Exposure Bias:   Default: 0.5,  Range: 0 to 1,  Shared.
Determines the variable amount of exposure along the path between the From and To transformations. A value of 0 causes more exposure at the From end, 0.5 causes equal exposure along the path, and 1.0 causes more exposure at the To end. If you have bright spots on a dark background, a 0 value would cause the processed spots to be brighter at the From end and dark at the To end, and a 1.0 value would cause the opposite.

Scale Result:   Default: 1,  Range: 0 or greater,  Shared.
Scales the brightness of the result.

Wrap:   X & Y,  Popup menu,  Default: [NO NO].
Determines the method for accessing outside the borders of the source image.

NO:  gives black beyond the borders.

TILE:  repeats a copy of the image.

REFLECT:  repeats a mirrored copy. Edges are often less visible with this method.

Subpixel:   Check-box,  Default: on,  Shared.
If enabled, uses a better quality but slightly slower method for performing the blur.

Blur Res:   Popup menu,  Default: FULL.
Selects the resolution factor for the motion blur. This is similar to the general 'Res' factor parameter, but does a better job of averaging down to lower resolution and interpolating back up to the result. Higher resolutions give better quality, lower resolutions give faster processing.

FULL:  Full resolution is used.

1/2:  The motion blurring is performed at half resolution.

1/4:  The motion blurring is performed at quarter resolution.

See Also:

BlurMotion Blur Streaks WarpRepeat WarpChroma EdgeRays

Sapphire Plug-ins Introduction

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