DMX lighting and LEDs, in sync with sound and video

Control fixtures over Art-Net, sACN and DMX USB, design LED pixel effects with shaders, and synchronise everything with music, video and sensors on one timeline. Free and open-source, on Windows, macOS, Linux and Raspberry Pi.

Download ossia score 3.9.0 Try it in your browser Read the documentation

Free and open-source (GPLv3) · Windows, macOS, Linux, Raspberry Pi and web browser

ossia score drives DMX fixtures and LEDs directly: it can run all the lights of a show or an installation, on the same timeline as sound, video and interaction. It is a good fit for theatre and dance, concerts, immersive rooms, installations and LED art, wherever lights must follow the media precisely.

What you can do

DMX output over Art-Net, sACN and DMX USB interfaces, with a fixture library based on the Open Fixture Library (DMX device).
Automate fixture parameters with curves, cue complete looks, and fade between them on the timeline (cues).
LED pixel mapping: generate LED patterns with shaders or arrays, and drive NeoPixel strips over SPI from a Raspberry Pi (LED design).
Sound-to-light: drive lights from audio analysis, beat tracking or MIDI.
Interactivity: trigger and change lighting from sensors, cameras, OSC or MIDI controllers.
Unattended: run headless on a small computer or a Raspberry Pi, starting automatically (headless mode).
Detailed fixtures: 16-bit channels, colour and gobo wheel names, fixtures with LED matrices, and quick creation of dimmers and RGB pars.
Shaders to LEDs: turn any shader into RGB or RGBW values in your strip’s channel order, preview it, and send colour arrays to Art-Net universes of any size (LED view, LED device).
DMX interfaces such as the Enttec DMX USB Pro and Pro Mk2.
DMX input: receive and record Art-Net and sACN, then replay or transform it.

Lighting needs, and how ossia score answers them

What you need	How ossia score does it
Running the lights of a show or an installation, with no other lighting software	DMX straight from ossia score over Art-Net, sACN or DMX USB, with a fixture library, cues and curves.
Lights precisely synchronised with sound and video	Lights, sound and video share one timeline and one clock.
LED strips and pixel effects	LED patterns from shaders or arrays, and NeoPixel strips over SPI from a Raspberry Pi.
Lights that react to music, sensors or performers	Audio analysis, beat tracking, sensors, cameras, OSC and MIDI can drive any fixture parameter.
A permanent installation on small hardware	Headless mode with autostart, on a mini PC or a Raspberry Pi.

To receive Art-Net, only one program per computer can listen on its port: if another program also receives Art-Net, use separate network interfaces or machines. Sending is not affected.

Download ossia score 3.9.0 Try it in your browser Read the documentation

Free and open-source (GPLv3) · Windows, macOS, Linux, Raspberry Pi and web browser

More ways to use ossia score

Stage and music

Show control — Cues, scenes and timecode for theatre, concerts and events.
Live electronic music — Synths, drum machines, sampler, step sequencers and plug-ins, in sync with MIDI clock, timecode and visuals.
Spatial audio — DBAP, GBAP and trajectories over any loudspeaker layout, up to 1024 channels, and control of spatialisation renderers.
Dance and interactive theatre — Pose detection, depth cameras, sensors and tracking drive sound, video and light, inside cues and scenes.
Contemporary music and live electronics — Interactive scores that wait for the performers, cues from pedals, live processing and spatial sound.

Video and light

Video, mapping and VJing — Video playback, multi-projector mapping, shaders, 3D and NDI, synchronised with sound and light.
Generative art — Shaders, 3D, gaussian splats and live coding, performed live or rendered frame by frame.
Recording and streaming — Cameras, SDI, NDI and SRT in; ProRes or MP4 recording, RTMP streaming and NDI or Spout out.

Spaces and experiences

Interactive installations — Sensors, cameras and tracking, sound and video, running unattended on a PC or a Raspberry Pi.
Museums and exhibitions — Exhibits that run all day without staff, with monitoring, a staff control panel and kiosk apps.
Escape rooms and attractions — Puzzles, props and sensors driving sound, video and lights, with game logic and a game master panel.
Kinetic art and robotics — Motors, pumps and robots written on a timeline, reacting to sensors, in sync with sound, video and lights.

Tools and research

OSC, MIDI and DMX timeline — Automate any OSC, MIDI or DMX parameter on an interactive timeline, with triggers and conditions.
Visual programming — Patch audio, video and interaction with nodes and a timeline, and run your Pure Data patches.
Real-time AI — Pose detection, depth from a webcam, real-time image generation, language models and machine learning by example, run locally.
Protocol bridge — Convert between MIDI, OSC, DMX, MQTT, serial, HTTP and Bluetooth LE, with mapping and filtering, always on.
Research, sonification and biosignals — LSL, HDF5 and CSV data, sonification, biofeedback, and sessions recorded and replayed on a timeline.
Teaching and workshops — One free tool for sound, video, light, sensors and code, on every OS, in the browser and on Raspberry Pi.
Custom apps — Package a project with your own interface as an app for Windows, macOS, Linux or the web.

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