Uploaded April 2025 | Updated September 2026, 4 hours ago
Creating animated backgrounds is a frequent task as a Motion Designer. In this After Effects tutorial, I show you how to animate this unique background quickly with basic expressions.
The first step is to randomly animate the scale and position of the shape with wiggle expressions.
Then we randomly colorise the shape with the seedRandom and random expression.
The seedRandom expression defines the random value, the random expression generates it.
A random colour value between white and black. After Effects uses decimal colour values between 0 and 1.
We delay the animation of the layers with the valueAtTime expression and the index expression.
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Creating animated backgrounds is a frequent task as a Motion Designer. In this After Effects tutorial, I show you how to animate this unique background quickly with basic expressions.
The first step is to randomly animate the scale and position of the shape with wiggle expressions.
Then we randomly colorise the shape with the seedRandom and random expression.
The seedRandom expression defines the random value, the random expression generates it.
A random colour value between white and black. After Effects uses decimal colour values between 0 and 1.
We delay the animation of the layers with the valueAtTime expression and the index expression.
► Sign up for my Newsletter: bit.ly/j-m-newsletter
► My After Effects Courses + Resources: bit.ly/ae-courses
► My After Effects Project Files: gumroad.com/manueldoesmotion
► Follow my Socials:
Instagram: instagram.com/manueldoesmotion
TikTok: tiktok.com/@manueldoesmotion
------------
► All music I use is from Artlist: bit.ly/artlist-music-for-video
Get 2 additional months for free!
► All you need to create stunning videos: bit.ly/motion_array
SAVE €50 on an annual subscription!
Some of my links are affiliate links. By purchasing through these links I earn some money at NO extra cost to you. It’s a Great way to support my channel! Thanks!










