What kind of data are you looking for?

Grayscale Images
2D Object Data
(Centroids, size...)
Reconstructed
3D Points
Rigid Bodies
Skeletons

Available interface options:

NatNet SDK

A client-server data streaming protocol for connecting to OptiTrack's real-time stream of reconstructed 3D points, rigid bodies (definitions and position/orientation), and skeletal data (definitions and joint angles).

Compatible with Motive, Expression, Arena, and Tracking Tools. Learn more

MATLAB Interface

MATLAB .NET interface and sample program (MatNet.m) for live streaming 3D points, rigid bodies, or skeletons. The MatNet sample program works directly with MATLAB core, requiring no additional MATLAB modules.

Unity Plugin

A sample controller script that can be attached to any object or character in your Unity scene, linking those objects to the Motive data stream. Compatible with both the free and Pro versions of Unity. Learn More

Direct UDP

Cross-platform protocol for streaming data to Unix, Python, Java, or other clients that require direct depacketization.

VRPN

Real-time interface for streaming 6DoF rigid body data to applications that support the VRPN protocol. The VRPN server is built directly into Motive.

Camera SDK

C/C++ interface to OptiTrack cameras and supporting hardware, for control of and access to raw camera frames, image processing modes, camera settings, 2D object data, and camera synchronization. Learn more

MotionBuilder Plugin

Free, real-time client plugin for MotionBuilder (2009 - 2016). Enables streaming of markers, rigid bodies, and skeletons. Learn More

Unreal Plugin

Unreal Engine 4 plugin which provides an easy-to-use component to drive the position and orientation of an actor in your Unreal scene with 6DoF rigid body data streamed from Motive. Also includes a modified Oculus Rift HMD plugin that supports OptiTrack positional tracking and drift correction. Source code for the rigid body streaming implementation is provided. Learn More

Motive API

Provides headless command and control of Motive via C/C++ interface. Access 2D camera images, marker centroid data, unlabeled 3D points, labeled markers, and rigid bodies.