Make a clip look like wet paint running down the screen. Colors along strong edges stretch downward into streaks that fade toward their tips.
Edges that drip
Edge Threshold picks which boundaries shed trails. High values restrict the drip to silhouettes and bold shapes; low values let skin and background texture run too, which crowds the frame. Night footage with bright signs on dark walls gives the cleanest result, because only the letters pass the threshold.
Length and spread
Drip Length sets the longest trail and Trail Spread varies the trail widths. Long, wide trails cover the lower half of the frame quickly; reduce length or spread before amount when detail below the subject disappears.
A melt on every frame
Trails are chosen again on every frame, so the effect reads as a restless, flickering melt, suited to music visuals and horror title cards more than to a slow, continuous run of paint.