Velo
0.9 betaWindows and macOS · free and open source→

Sound shapes light.

Live visuals played by the music, for VJs, DJs and anyone with a projector. Velo hears what your computer plays and every picture moves with it.

Download Get started
Move the pointer to lean the light. Click for a kick.
Computer audio, no cablesKick · Snare · Hat · MelodyAuto BPMTap tempoAbleton LinkMIDI clockMIDI learnSoft takeoverOSC inSpoutNDIFullscreen on any displayWGSL shaders, reloaded on saveISF importHAP · H.264 · HEVC65k GPU particlesFeedbackAutopilotBlackout · FreezeTest patternMCP server
V BeamsPlasmaLiquid ChromeFireLasersFractalCode RainAuroraGalaxySynthwaveHyperspaceFerrofluidMetaballsVoronoiTruchetStarfieldIridescenceLight RaysGlitchVHSLED WallGod RaysHalftoneShake

The patch

Wires you can feel.

Every node shows its picture. A signal plugs into a jack at the foot of the card it moves, and cables bundle under a tie you slide along them. Go on: drag the cards, drag the tie.

Audio InLevelBassMidHighVeloSHADERAudio In · Bass → SpreadAudio In · Mid → SmokeAudio In · High → RaysFeedbackEFFECTOutputOUTPUT

What it does

An instrument, not a timeline.

TouchDesigner’s patching and Resolume’s stage, small enough to learn in five minutes and fast enough for a whole night.

Hears the music

The computer’s own sound or any input, split into level, bass, mid, high, kick, snare, hat and melody. The tempo heard, tapped, or followed from Ableton Link or a MIDI clock.

Makes pictures

Generators, effects and composites, 40 shader presets and 25 effect presets. Particles on the GPU, stills, GIFs and movies in HAP, H.264 and HEVC.

Patches by hand

One graph per scene, every node showing its picture. Tab opens the node menu, wires snap into ports, and cables bundle under ties.

Plays live

Scenes launched on the beat, the bar or four bars, through Cut, Crossfade, Wipe, Zoom, Glitch or Flash. Eight macros a scene and variations that morph.

Goes out

Fullscreen on any display with the picture’s shape kept. Spout to Resolume, TouchDesigner, OBS or MadMapper, NDI to any computer on the network.

Builds with AI

Describe a visual and Claude Code, Codex or a local model builds it from Velo’s own nodes. Velo is an MCP server too.

40shader presets
25effect presets
8macros a scene
6transitions
65kparticles on the GPU

Builds with AI

Describe it. Watch it build.

The AI panel turns a few words, and pictures as references if you like, into a scene made of Velo’s own nodes, one undo step for all of it. Claude Code and Codex use their own sign-in; Ollama and LM Studio run on your computer; OpenAI, Anthropic, Gemini, OpenRouter and Groq take a key.

Velo is an MCP server too: Claude Code, Claude Desktop or Cursor can drive it from outside.

Connect an AI

See it

Calm on the laptop, loud on the wall.

A dark interface that stays out of the way of the picture. Click one to look closer.

The Velo scene live: Audio In’s bands moving a V Beams shader, the preview, the inspector and the deck of macros and sources.
The demoThe Velo scene live: Audio In’s bands moving a V Beams shader, the preview, the inspector and the deck of macros and sources.

Five minutes

From silence to a projector.

  1. 01

    Play some music

    Velo hears what the computer plays. No cables, no setup.

  2. 02

    Press Tab

    On the canvas, pick a visual: type a few letters, then Enter.

  3. 03

    Drag Kick onto a slider

    From the sources at the bottom. Now the kick moves it.

  4. 04

    Output → a display

    It goes fullscreen there. B blacks it out, F freezes it.

The five minutes, step by step →

Play some music.

Velo is free and open source. Download it, or build it from the sources.

Download VeloGitHub

The app is GPL-3.0-or-later; its libraries are MIT or Apache-2.0.

Velo. Sound shapes light.