But how do AI images and videos actually work? | Guest video by Welch Labs

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3Blue1Brown·1.9M views · Jul 2025

Clips

1. 10:170:20Comparing DDPM sampling with and without noise in Stable Diffusion 2The demo shows the difference in output quality when generating a 'tree in the desert' using Stable Diffusion 2, contrasting a sharp image with a blurry one when the noise step is removed.Stable Diffusion· AI Image Generator
2. 33:080:29Adjusting Classifier-Free Guidance scale in Stable DiffusionThe demonstration shows how increasing the guidance scale alpha from 0 to higher values causes a tree to physically grow and gain detail within a desert scene in Stable Diffusion.Stable Diffusion· AI Image Generator