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Liquid effect

Acid Slice

Acid Slice is a liquid video effect in FRCTL, the browser VJ studio. Hard vertical rainbow slices with digital acid drips.

Runs live on video, images, a camera or generated art. Stack it with any other effect, and route LFOs, envelopes or any of ten audio bands to its controls so it moves with the music.

The untouched demo art: an eye inside a triangle over wavy teal, blue and peach lines
Source
The eye-in-triangle illustration chopped into thin offset vertical strips in green, magenta and orange
Acid Slice, default settings

What Acid Slice does

Cuts the frame into hard-edged columns and slides each one along its length by its own amount, so the picture shatters into offset strips. A rainbow channel swap sits over every strip. Columns runs from about two dozen fat slices to over ninety thin ones, Drip sets how far strips slide and wobble, and Acid never drops below about a third of the rainbow.

Using Acid Slice

Where it works
Hard cuts on a drop, glitchy Reels and pack loops that need a digital edge. Every column keeps a clean hard edge, which reads as broken video where Acid Melt reads as paint.
With the music
B1 (kick) on Drip makes the strips jump on every kick and settle between hits. Columns is worth a MIDI fader, so you can re-cut the grid from fat to fine by hand across a build.
Starting point
Columns hard left, Drip centre, Acid a quarter, Tint hard left, then raise Columns until the subject breaks into strips.

Controls

Columns
Vertical slice column density.
Drip
Horizontal wobble and vertical drip strength.
Acid
Rainbow acid color mix vs raw slice.
Tint
Rotates the slice rainbow around the wheel.
Bands
How many rainbow stripes the slices run through. Hard left is one flat colour running in time.
Direction
Which way the slices drip.
Speed
Rate of the effect motion. Centre is the authored speed, hard left a tenth of it.

Pairs well with Acid Slice