This filter applies time-varying 2D Gaussian Blur to the source.Click here to see variation controls in detail. Dynamic Size Dynamic Size and Angle Parameters: Size D1 Controls the blur power in D1 direction. Value of 1.0 sets the maximum blur, but you can enter in edit field values up to 4.0 and get more blur, but with a slightly reduced quality. Size D2 Controls the blur power in D2 direction. Value of 1.0 sets the maximum blur, but you can enter in edit field values up to 4.0 and get more blur, but with a slightly reduced quality. Variation Controls Blur power variations. Random values are separate for D1 and D2 directions. Angle Controls the blur angle. If the angle is 0.0, D1 is horisontal. Value of 1.0 = one full rotation (360 degrees). Variation Controls how much and how fast the blur angle vary over time. See also Dynamic Gaussian 2D variations: Gaussian Blend - Blur an image and blend with the original. Variable size - control the blur power within the frame with a Radial Mask, or Linear Mask.