Video recording, streaming and routing

Bring in cameras, capture cards and network streams, process them on the GPU with sound, 3D and graphics, then record to file, stream online or send the image to other software. Free and open-source, on Windows, macOS and Linux.

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 has a complete video pipeline: images come in from cameras and the network, go through shaders, 3D, text and AI, and go out to screens, files, other software and streaming services, in sync with sound and the rest of the show.

What you can do

Inputs: webcams and USB cameras, screen and window capture, network streams (RTSP, SRT), NDI with PTZ camera control, Spout and Syphon, PipeWire and GStreamer pipelines, DSLR cameras through gphoto2 (camera, NDI, FFmpeg device).
Capture cards: AJA cards built in, with GPUDirect, 10-bit and V210 formats, tested at 8K60; Blackmagic DeckLink and Magewell with a custom build.
Processing: shaders, video mixing, keying and computer vision, 3D scenes, titles and slides, any FFmpeg filter graph, on the GPU (video, video mixing).
Recording: write the program output to MP4, MKV, ProRes, DNxHD or AV1 files with its sound, or record sound alone to WAV (FFmpeg device, audio recorder).
Streaming: send audio and video to an RTMP service, or over RTP or UDP, directly from ossia score, without a separate encoder (livestreaming, stream in and out).
Routing to other software: NDI (GPU zero-copy, tested at 8K), Spout, Syphon and PipeWire outputs, to feed streaming studios, video conferences or other media software (Spout, Syphon).
Colour: HDR and wide-gamut sources and outputs (HLG, PQ, BT.2020, Display P3), with tonemapping (video formats and colour).
Automated: start and stop recordings, switch cameras and change graphics from the timeline, from cues or from any OSC or MIDI controller.

Video production needs, and how ossia score answers them

What you need	How ossia score does it
Streaming a concert or a performance with its visuals	The same project renders the visuals, mixes the sound and sends both to the streaming service.
Bringing remote or network video into a show	SRT, RTSP, NDI and capture card inputs, processed like any other texture.
Recording the program for archive or editing	Recording to ProRes, DNxHD, MP4 or AV1, triggered from the timeline.
Sending images to the rest of the setup	NDI, Spout, Syphon and PipeWire outputs alongside the screens.
Camera switching driven by the show	Cues, scenes and sensors choose cameras and graphics automatically.

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.
DMX lighting and LEDs — Art-Net, sACN and DMX USB with a fixture library, LED pixel mapping, all in sync with sound and video.
Generative art — Shaders, 3D, gaussian splats and live coding, performed live or rendered frame by frame.

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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