After Effects countdown expressions tutorial

Quickly Create a Countdown in After Effects

Editing Notes

By Pixel Li · June 15, 2022

中文原文 →

Reference: After Effects Tutorial - Creating a Countdown Timer Using Expressions

Core code

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slider = thisComp.layer("Slider Control").effect("Slider Control")("Slider");

sec = Math.floor(slider%60);
min = Math.floor(slider/60);


function zero(x) {
	
if (x<10) return "0" + x
		
else return x
		
}
	
zero(min) + ":" + zero(sec)

Steps

  1. Create a new Null layer, name it Slider Control, and add a “Slider Control” property. Slider Control
  2. Create a new text layer.
  3. In the text layer, Alt+left-click “Source Text” and paste the core code into it.
  4. Alt+left-click the Slider Control property on the Null layer and enter value - time;
  5. Adjust the value of the Slider Control property on the Null layer; the value = the number of minutes you want for the countdown x 60. For example, for a 10-minute countdown, enter 600, i.e., 10x60.
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