© 2014 by GATIMEDIA

GM_LIQUID_DISTORTION

'Liquid Distortion' using a pattern generated with expression to create fluid-like distortion.

CONTRAST

Allows you to adjust the contrast of the distortion pattern.

SCALE

Allows you to adjust the scale of the distortion pattern.

SPEED

Allows you to adjust the speed of the distortion pattern transformation.

OFFSET

Allows you to offset the pattern transformation.

BLUR
Allows you to add blur to a distortion pattern.

CROP
Allows you to crop the image to a size of the input's format.

MIX
Allows you to adjust the overall effect. 

/MASK input

The mask input uses an alpha value as an area where the effects will be used.

When the input is not in use the effects appear on the whole image.

Hope you will find it useful! 

 

Here's the GitHub link ( just select the text and copy to Nuke )

Animated distortion