Video, projection mapping and VJing
Play video, map it on several projectors, generate visuals with shaders and 3D, and share them over NDI, Spout and Syphon — synchronised with sound, lights and sensors. Free and open-source, on Windows, macOS and Linux.
Download ossia score 3.9.0
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Read the documentation
Free and open-source (GPLv3) · Windows, macOS, Linux, Raspberry Pi and web browser
ossia score has a complete GPU video and 3D pipeline. It is used for video installations, projection mapping on buildings and stages, fulldome shows and audio-reactive visuals, often in the same project as the sound and the lights.
What you can do
- Video playback of most formats (HAP, H.264, ProRes, image sequences…), looping and mixing, with an eight-input video mixer (video, mixing and mapping).
- Multi-projector mapping with per-region perspective warping and edge blending, and fulldome fisheye output (multi-projector mapping, window device).
- Generative visuals with ISF shaders and compute shaders, Context Free Art and Structure Synth (shaders).
- 3D scenes since version 3.9: glTF, FBX, OBJ and other models with animations, PBR materials, instancing, point clouds and gaussian splats, all on the GPU (3D pipeline).
- Video in and out: NDI, Spout, Syphon, cameras and screen capture, RTSP and SRT streams, PipeWire and GStreamer, and capture and playout cards (AJA built in and tested at 8K60; Blackmagic DeckLink and Magewell with a custom build); recording to MP4, ProRes, DNxHD or AV1.
- Interaction: audio-reactive visuals, computer vision (blobs, optical flow, contours), pose detection with ONNX models, depth cameras, MIDI and OSC control (pose detection).
- Timeline: everything can be automated and cued, so a 20-minute show plays the same way every night, or reacts to the audience.
- HDR and cinema formats: HDR window output on macOS and Windows (HLG, BT.2100, Display P3), 12-bit DCI X’Y’Z’ and EXR half-float images (video formats).
- Hardware decoding through Vulkan Video, Direct3D 12 and VideoToolbox, without copies whenever the graphics backend allows it, with HAP, DXV, Cineform and H.265.
- Shaders from the web: drop a Shadertoy link and it becomes an ISF shader; vertex shader art, video-bending effects, and any FFmpeg filter graph (vertex shader art).
- Slides and text for lecture-performances and conferences, with presentation and advanced text objects.
- Exact-frame offline rendering to image files from a script, for previews or fixed-media pieces.
Video needs, and how ossia score answers them
| What you need | How ossia score does it |
|---|---|
| Mapping video onto several projectors or surfaces | Per-region warping, edge blending and fulldome fisheye output. |
| A written or interactive show that plays the same every night, or reacts | Every video, shader and 3D parameter can be cued, automated or triggered from the timeline. |
| Generative and 3D visuals, at any resolution | ISF and compute shaders, a GPU 3D pipeline, and no resolution limit or watermark. |
| Interactive theatre and dance with cameras and sensors | Pose detection, depth cameras, computer vision and tracking protocols. |
| Exchanging video with other software and hardware | NDI, Spout, Syphon, RTSP, SRT, and capture and playout cards. |
| Video, sound and lights from one computer, Linux included | One project and one machine, on Windows, macOS or 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