• New

vAEriable

Enter or load values directly from the timeline and solve arithmetic, algebra, and cross-multiplication.

  $0.00
  • Free Trial
Description

Solve for x inside After Effects

I realized most of the math I needed when working inside After Effects was simple arithmetic and algebra, or cross multiplication to maintain ratios.

So rather than leave After Effects to get the answer, I built vAEriable.


New feature in v1.1.0

Compare selected values with one click or hotkey. topcompare-demo-v2.gif

When the top fields are empty and you have two keyframes or properties selected, clicking Calculate brings up a window comparing the two values.

vAEriable also comes with a standalone Calc-vAEr.jsxbin script that allows you to compare selections with a hotkey, so you don't even need to use the panel.


If position or anchor point keyframes/properties are selected, the window shows the difference per axis, as well as the Net Distance (a straight line from start to finish).

If scale is selected, the window shows the difference in scale, along with the scale multiplier to scale from the smaller to larger value, and to scale from the larger to smaller value.

If a single-value property is selected, the window shows the difference in value.

  

How arithmetic/algebra works

topcalculate-demo.gif

Fill two fields, leaving one blank to be solved.
You can enter values manually or load them from selections.

You can load one or two keyframes or properties from one or two layers.
If your selection is an array, choose what dimension to load

Click the operator to cycle through operations, or right-click to choose from the dropdown menu.

Click Calculate. The answer will be copied to the clipboard.

Right-click the Calculate button to set if the copied answer is the true value (can be positive or negative), or absolute value (always positive).

  

How Cross Multiplication Works

bottomcalculate-demo.gif

Fill three fields, leaving one blank to be solved.
You can enter values manually or load from selection.

What Load reads, in order of priority

  1. Selected mask - loads the mask's bounding-box size
  2. Selected layer - loads the layer's size
  3. Selected comp or footage item in the Project panel - loads its dimensions

Right click the Load button to set if you want to load the source value of the selection, or the scaled value (source multiplied by scale)

Click Calculate. The answer will be copied to the clipboard.


  • 0:00 - Intro
  • 00:26 - Overview of arithmetic/algebra portion
  • 00:54 - Copying true value or absolute value of answer
  • 01:11 - Loading values for arithmetic/algebra
  • 02:56 - Loading values that are arrays
  • 04:00 - Using vAEriable to determine scale percentages
  • 05:10 - Overview of cross multiplication portion
  • 05:25 - Loading width/height for cross multiplication
  • 06:11 - What can be loaded for cross multiplication
  • 06:59 - Loading Source vs loading Scale
  • 07:59 - Outro

Discussions

Want to talk about it?

Head over to r/aescripts to chat with fellow users about this product.

Need Support?

Please open a support ticket to be connected directly with the author of this product

Version History

1.1.0 -

Jul 7, 2026

Added one-click compare feature. When the top fields in the panel are empty, select two keyframes or matching properties across layers, click the top Calculate and a window pops up comparing the values. Also included Calc-vAEr.jsxbin which is a standalone script to run the compare function without the vAEriable panel. Can be tied to a hotkey or used with KBar.

1.0.0 -

Jul 1, 2026

Initial release

Compatibility

After Effects

2026, 2025, 2024, 2023, 2022, 2021, 2020

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Updated: Oct 21, 2025 1:35 AM

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