Adaptive beat detection
Bass-energy tracker with an adaptive threshold. Locks the BPM, fires an envelope on every kick, decays gracefully. Works on techno, jazz, and an ill-advised spoken-word record.
5 visual languages
Same engine. Five completely different looks.
Five single-file variants of the same engine, each with a distinct aesthetic. Click one to open it in a new tab. Same controls, same library, same MP4 export.
01 · NEON
Neon
Electric magenta / cyan
Hot club, screen-blend stacks, sharpened easings, scanlines. Cuts on the beat, not after it.
02 · FILM
Film
Sepia / 16mm grain
Handheld warm tone, per-pixel grain, soft vignette, slow drift. Smooth easings throughout.
03 · GRID
Grid
Monochrome / hard cells
2×2 + half-cell composition, snap to the beat. Binary easings — no in-between, only on or off.
04 · SMOKE
Smoke
Cream warm / heavy blur
Everything at 0.5 opacity, slow drift, blurry and slow. The song moves through fog.
05 · HALLUCINATION
Hallucination
RGB shift / scanline body
Every reactor maxed. RGB channel shift, lighter and difference blends, noise canvas overlay.
ALL FIVE →
See them all
Directory · side by side
All five versions on a single page with thumbnails, descriptions, and direct links.
Made for these people
Who actually uses this.
The engine and its 5 versions were built for people who have audio and a release date, and zero budget for a video editor. The profiles below are the ones who reach for it first.
New
Hand-drawn mascot
Click the mascot — it requests your camera, samples frames at 8 fps, and reacts in real time. A hand-wave makes it wave back. A face held high makes it look up. Sustained motion (you're close) makes it lean in. Long quiet after activity makes it ease back. Head tilts toward your face. No model, no CDN.
→swr-mascot-camera.client.js
Best fit
♪
Indie musician
Releasing a single with no video budget. Loads the mastered WAV, picks a style, gets a 30s MP4 for the post.
→versions/neon.html
▰
Beatmaker
Selling beats on BeatStars / Airbit. Renders a 15s preview per track so the listing beats a static waveform.
→versions/grid.html
◐
DJ
Promoting a mix or a set. 60s vertical teaser with BPM burned in frame 1, cuts on the downbeat, ready for Reels.
→versions/smoke.html
✦
Small label
3–10 artists a year, one brand voice. Uses the same version across the roster so every release reads as the label.
→versions/film.html
Best fit
◎
Belgrade / Serbian artist
Local pricing (€25 vs €40+ in the EU), in-person demo at KC Grad, Drugstore, or Dot. Same engine, different margin.
→campaign.html
≋
Podcaster
One long episode, ten short clips. Renders each pull-quote moment as a 15s visual to drive follows from the audio feed.
→versions/film.html
⌗
Sound designer
Sample pack creator showcasing the patches. The visualizer becomes the cover art — engine output doubles as marketing.
→versions/hallucination.html
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Music manager / agency
Visual content for the whole roster. One tool, one workflow, ten artists' worth of social posts per month.
→profit-plan.html