Reaction diffusion video tool
TekDetek is a reaction diffusion video tool and reaction-diffusion filter on your webcam or file: living stripes, dots, and mazes that move with the clip. No separate simulator window.
TekDetek is not completely free. Phone RD looks are free to swipe and edit. Recording a Pro-gated look, or adding the RD node on the desktop graph, needs Pro. Free export is always watermarked and 20 seconds.
Free
Open the app. Swipe and edit looks — phone reaction-diffusion and cellular automata included. Luma detection. Hand. Watermarked MP4 or PNG up to 20 seconds. Watermarked OBS up to 5 minutes (restart anytime).
Pro
Clean export — no watermark. Record and OBS as long as you want. Full preset library, Shuffle, Depth, Alt ASCII. Add RD, CA, PreText, GEO 3D, and Sonify on the desktop graph. Higher detection caps. Buy Pro on Gumroad.
Live video, GPU sim
The field updates every frame. Seed from motion or run full-frame. Edit crawl, scale, and tint on phone or in the RD node inspector on desktop.
Use it as a reaction diffusion webcam pass for club beds, music-video backgrounds, or still grabs.
Pair with ASCII or CA
Layer RD under ASCII for a readable foreground. Or run RD alone for abstract projection.
Cellular automata is the stepped-grid sibling. Try both on the same clip.
FAQ
What is free?
Open the app in a browser, swipe and edit looks (phone reaction-diffusion and cellular automata included), luma detection, Hand, watermarked MP4 or PNG up to 20 seconds, and watermarked OBS up to 5 minutes (restart anytime).
What requires Pro?
Clean export with no watermark, unlimited record and OBS, the full preset library, Shuffle, Depth and Alt ASCII, adding RD / CA / PreText / GEO 3D / Sonify on the desktop graph, and higher detection caps. TekDetek is not completely free.
What is reaction-diffusion video?
A generative field painted on your webcam or file, updating every frame — stripes, spots, mazes, motion. TekDetek runs it in-browser.
Webcam required?
No. Upload MP4 for offline passes.