SysMocap
SysMocap is a free, open-source application for real-time, video-driven motion capture and 3D virtual-character rendering.
What SysMocap is
SysMocap is a free, open-source application for real-time, video-driven motion capture and 3D virtual-character rendering. It targets VTuber, live, AR, and VR use on Linux, macOS, and Windows. Users can drag 3D models into the application; VRM 0.x and 1.0 files are supported, and VRoid Studio is identified for avatar creation. Demonstrations cover facial, half-body, half-body with hands, and full-body capture. Automatic skeleton detection works with VRM and Mixamo-format FBX files, while other skeletons can be mapped manually. The viewer includes bone and dressing controls. SysMocap supports OBS live-streaming and forwards motion data to the WebXR API over HTTPS. Its Material Design 3 interface includes dark mode and is described as multilingual, including English and Chinese. Windows packages target 64-bit Windows 10 and 11; macOS packages cover Intel and Apple Silicon. The project uses Mozilla Public License 2.0.
Good
- Free and open source
- Runs on Linux, macOS, and Windows
- Full-body and hand motion capture
- Automatic VRM and Mixamo skeleton detection
- OBS and WebXR forwarding
Watch out
- macOS setup may require disabling Gatekeeper checks
- Other skeletons require manual mapping
- Source setup requires current Node.js and npm
Who it suits
It suits VTuber creators, streamers, and AR or VR users needing free motion capture with imported 3D avatars. Developers can also run it from source with Node.js and npm.
Verdict
SysMocap offers broad platform support, avatar import, body tracking, and streaming connections without a license fee. Manual mapping for unsupported skeletons and the extra macOS or source setup are important considerations.
The facts
Each one read from SysMocap's own pages, with the date it was checked.
What it does
- Avatar tools
- The README says users can create avatars with VRoid Studio and that VRM 0.x and 1.0 are supported.checked 9 Oct 2026
- Data forwarding note
- The README notes that HTTP and HTTPS use the same port in Mocap Data Forward.checked 9 Oct 2026
- Dependencies
- The project credits MediaPipe Holistic for motion capture, Kalidokit for motion-capture data calculations, and Electron and Vue.js for the GUI framework.checked 8 Oct 2026
- Interface
- The software has a Material Design 3 interface with dark mode support.checked 8 Oct 2026
- Language
- The README describes the software as multilingual, including English and Chinese.checked 9 Oct 2026
- License
- The GitHub repository lists the MPL-2.0 license.checked 9 Oct 2026
- Model compatibility
- The README identifies VRoid Studio as a way to create avatars and says VRM 0.x and 1.0 are supported.checked 8 Oct 2026
- Model import
- The README says users can import 3D models by dragging them into the app.checked 9 Oct 2026
- Model viewer
- The model viewer includes bone and dressing controls.checked 9 Oct 2026
- Motion capture
- The software supports full-body motion capture.checked 9 Oct 2026
- Purpose
- SysMocap is a real-time, video-driven motion-capture and 3D virtual-character rendering system for VTuber, live, AR, and VR use.checked 9 Oct 2026
- Skeleton detection
- It supports automatic skeleton detection for VRM 0.x and 1.0 files and Mixamo-format FBX files, plus manual mapping for other skeleton structures.checked 9 Oct 2026
- Skeleton support
- It supports automatic skeleton detection for VRM 0.x and 1.0 files and Mixamo-format FBX files, plus manual mapping for other skeleton structures.checked 8 Oct 2026
- Source setup
- Running from source requires a current Node.js installation and uses npm install followed by npm start.checked 8 Oct 2026
- Streaming
- The README says SysMocap supports OBS live streaming.checked 9 Oct 2026
- WebXR
- Motion-capture forwarding supports the WebXR API over HTTPS only.checked 9 Oct 2026
Where it runs
- macOS requirements
- The README lists Intel macOS packages for macOS 10.15 or later and separate Apple Silicon packages.checked 9 Oct 2026
- macOS setup
- The README advises users to disable Gatekeeper checks and provides a command to remove quarantine attributes if macOS reports the app as damaged.checked 9 Oct 2026
- Platforms
- Prebuilt packages are available for Windows and macOS; Linux is listed as source code only.checked 9 Oct 2026
- Windows requirements
- The README lists 64-bit Windows 10 and 11 packages for x86_64 and ARM64 processors.checked 9 Oct 2026
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