Mocap Studio release notes

Release notes for AR 51 Mocap Studio, the Windows and Linux desktop client. Newest release first. (Mocap Studio is the client; the capture server is Mocap Unleashed.)

note

A few 2.3.1 maintenance builds (2.3.1.6R through 2.3.1.26R) shipped without detailed per-change notes; they're listed with their release dates and a summary for completeness.

3.0.2.35R

2025-12-01 · Windows & Linux · since 2.3.1.26R

This is a major release. Mocap Studio moves from the 2.3 line to 3.0, adding markerless full-body solving, a new .gr51 capture workflow, richer camera tools, and Linux support alongside Windows.

New

• Full-body character solving. Live capture now drives a complete humanoid rig — spine, neck, clavicles, arms, and legs — for natural, stable motion out of the box.
• Open and export .gr51 captures. Double-click a .gr51 file, drag it onto the window, or pass it on the command line to load a capture instantly; imported captures are solved automatically and can be re-exported.
• Export to FBX, CSV, and GR51. Send takes straight to your DCC or analysis tool, with progress shown throughout the export.
• Biomechanics angles in CSV export. Joint-angle data is now included in CSV output for movement and clinical analysis.
• Per-person identity. Assign and display an entity ID or character name per tracked person, so subjects stay clearly labelled across a session.
• Camera panel search and undistort toggle. Quickly find a camera in large rigs and switch lens-distortion correction on or off directly on the feed.
• Phone cameras as capture sources. Android and Pico phone cameras can be used as capture devices.
• Server health at a glance. A new status panel shows whether the capture server is alive and lets you restart it without leaving the app.
• Linux support. Mocap Studio now ships as a native Linux build in addition to Windows.

Improved

• Smoother, more responsive exports. FBX and other exports report clear progress and no longer freeze the interface on large takes.
• Camera calibration and auto-tune. A guided auto-tune workflow with live progress makes dialing in cameras faster, and the calibration menu now shows full device names.
• Camera feed accuracy. Video overlays stay aligned with the 3D view as cameras move, and distortion correction is more faithful to each lens.
• Character setup that sticks. Character-to-subject mappings are saved to disk and validated, with clear on-screen feedback when something needs attention.
• Clearer scene readability. Person labels hide automatically when a person is hidden, and skeletons in an A-pose are colour-coded so setup state is obvious.
• Accessibility. Added colour-vision-deficiency simulation to help verify that the interface is readable for all users.

Fixed

• Capture no longer stalls when a camera drops offline mid-session.
• Corrected CSV export frame counts and improved consistency of exported data.
• Fixed video-overlay misalignment so animated cameras track the footage correctly.
• Resolved incorrect foot placement caused by faulty capture-bounds and foot-region calculations.
• Fixed finger mapping on humanoid characters.
• Corrected the camera-feed video path on Linux so live feeds display reliably.
• Numerous stability fixes to reduce crashes and unexpected hangs during long sessions.

Known issues

• Requires a compatible Mocap Unleashed capture server; older 2.3-era servers are not supported by this release.
• On Linux, launch Mocap Studio from the installed application entry so .gr51 file association and camera device access are set up correctly.

2.3.1.26R

2024-11 — Rebuild to align with the current capture server; no client-side changes in this build.

2.3.1.25R

2024-11 — Rebuild to align with the current capture server; no client-side changes in this build.

2.3.1.13R

2024-09 — Rebuild to align with the current capture server; no client-side changes in this build.

2.3.1.6R

2024-09 — Rebuild to align with the current capture server; no client-side changes in this build.

2.3.1.0R

2024-03 · since 2.3.0.3R

Opens the 2.3.1 line, carrying forward the 2.3.0 export and character work with fixes for playback and character setup.

Improved

• FBX timing. Exported FBX animation now uses exact per-frame keyframes instead of continuous time, so motion lands on frame boundaries and reimports cleanly.
• Recording playback. Playback now also finds footage stored in H.265 folders, so more of your recorded sessions play back without extra setup.

Fixed

• Fixed finger mapping on MetaHuman characters, which have an extra metacarpal joint that was previously handled incorrectly.

2.3.0.3R

2024-01 · since 2.3.0.0R

New

• Built-in update checker. Mocap Studio can now check for, download, and install a newer version from within the app.

Improved

• Clearer dialogs. Message dialogs now support an icon, up to three choices, and a remember-my-choice checkbox for smoother confirmations.
• Ready-to-use characters. Added iClone and MetaHuman characters with updated textures.

Fixed

• FBX exports now use the correct right-handed orientation, so motion no longer comes in mirrored in other software.
• Corrected root-joint detection so exported skeletons are rooted correctly.

2.3.0.0R

2024-01 · since 2.2.4.2R

New

• FBX export that works everywhere. A rebuilt FBX exporter produces files that open correctly across all major DCC and animation software.
• Motion smoothing. New Gaussian and Butterworth filtering options clean up captured motion for steadier results.
• Guided installer. A proper Windows installer that removes the previous version before installing the new one.
• Added a HandGun prop prefab.

Fixed

• Corrected viewport field-of-view while streaming, so the live view is right at any camera aspect ratio.

2.2.4.2R

2023-12 · since 2.2.4.0R

Stability and consistency fixes ahead of the 2.3.0 release.

Fixed

• Corrected the viewport vertical field-of-view while streaming, so the live 3D view is right at any camera aspect ratio, regardless of the camera-feed aspect ratio.

Improved

• Cleaner startup with the Unity splash logo hidden.

2.2.4.0R

2023-11 · since 2.2.2.12R

New

• Video playback from JPG image sequences. Review recorded captures stored as image sequences directly on the timeline.
• C3D support. Import and export the C3D format for motion-analysis interchange with biomechanics tools.
• Open GR51 files from the file menu, and a recording countdown before takes begin.

Improved

• Reworked property grid for editing settings, with faster editing and clearer controls.
• Movable pop-up windows you can drag by their title bar.
• Camera path and motion visualisation — richer trails showing tracked-marker and camera movement over time.
• More reliable timeline playback for recorded footage.

2.2.2.12R

2023-04 · since 2.2.2.8R

New

• Camera heatmaps and motion trails. Visualise camera coverage and the paths of tracked markers over time.
• Object-detection overlays. Show detected objects on the camera feed, with custom prop visuals.
• GR51 files can be opened from the file menu.
• Search bar for finding items quickly, plus a recording countdown before takes start.

Improved

• Camera feeds now show FPS and resolution and handle different aspect ratios (including vertical and 9 MP cameras) correctly.
• Zoom controls for the camera view; movable pop-up windows.
• Keyboard shortcuts for toggling heatmaps, skeleton heatmap, and the grid.

Fixed

• Fixed timeline and playback glitches during video review.
• Fixed marker-trail rendering and full-screen camera-view issues.

2.2.2.8R

2023-04 · since 2.2.2.3R

New

• Import quality control when bringing in captures.

Improved

• More reliable camera visualisation with a persistent connection to the capture server.

2.2.2.3R

2023-04

New

• FBX import and export with sample content.

Improved

• Camera settings can be adjusted directly from Mocap Studio; added device-calibration icons.

Fixed

• Service-status indicator fixes; safer handling of characters with a missing prop prefab.