The Input parameters for the FluidBlur effect create a motion blur. For more information, see FluidBlur.

Blur Amount

The level of blur for objects that are moving.

The amount of blur ramps linearly from 0 to Blur Amount as the pixel motion increases from the Lower Motion Threshold value to the Upper Motion Threshold value. This means that the faster an object moves, the more it is blurred.

Lower Motion Threshold, UpperáMotion Threshold

Objects moving less than the Lower Motion Threshold number of pixels between frames or fields are not blurred. Objects moving more than the Upper Motion Threshold number of pixels between frames or fields are not blurred. Objects whose movement falls between the two values are blurred by the Blur Amount.

Trail

Instructs the system to add an amount from the previous frame's (or field's) blur to the current frame. This produces smooth movement, especially as objects move along curved paths.

Sharpen Leading Edge

Allows you to keep the front edge of an object crisp and clear while other portions are blurred.

Progressive Source

Use this option if your footage was captured or converted to progressive footage (i.e., not interlaced). If your sources are progressive, enabling Progressive Source produces smoother results. This option has no effect in 24p projects because the system assumes that you are using progressive footage.