Autodesk MotionBuilder License, valid for 1 year

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Introducing MotionBuilder

MotionBuilder enables artists to work faster and more efficiently without compromising creativity.

This release introduces:

Support for Python 3

Developer-focused improvements

Workflow enhancements

All aimed at streamlining the daily work of animators and developers.

What’s New in MotionBuilder

Python 3 Support

Python 3 is now available in MotionBuilder, offering:

Improved performance and security

Modern language features

Access to the latest libraries via PIP

Python 3 is now the default on Windows and Linux. However, MotionBuilder can still run in Python 2 mode using an environment variable or command-line flag.

Developer-Focused Improvements

More Powerful Command Line

The MotionBuilder Python Command Line tool has been significantly enhanced.
The mobupy.exe tool can now be used to call the MotionBuilder Python SDK, enabling:

File processing

Command-line playback

Advanced automation workflows

Python / API Enhancements

The MotionBuilder API has been expanded with new capabilities based on developer feedback, making integration and customization more powerful.

Python Editor Updates

The Python Editor now includes:

An “X” button on each tab for quick closing

Improved management of multiple scripts

Customizable Splash Screen

Developers can now customize the startup screen using the environment variable MOTIONBUILDER_ICON_PATH, allowing studios to differentiate between projects or tool versions.

Workflow Improvements

Quaternion Support in FCurve Editor

Animators can now:

View real Quaternion rotation values

Enable “Real Quaternion Rotations” from the context menu

See a visual indicator when this mode is active

Character Extension Enhancements

A new “Add to Body Part” option allows:

Easier keyframing of character extensions

Better synchronization with body parts

Auxiliary Effect Controls

The new “Auto-Extend Auxiliaries” setting allows animators to:

Automatically display auxiliary pivots/effectors

Reduce repetitive actions in IK workflows

Relationship Constraint Updates

Users can now:

Include constraints in animation layers

Control layer weight

Better visualize relationships in the Navigator

Camera Plate Offset and Scaling

New controls provide more precise adjustments:

Offset X/Y

Scale X/Y

These work alongside existing settings like Center and Maintain Ratio.

Group / Set Enhancements

New options allow preservation of:

Show

Select

Transform (TRS) states

This improves control when toggling parent nodes.

Heads Up Display (HUD) Improvements

Drag-and-drop HUD management in the Navigator

Easier attachment to cameras

Improved rendering in the Viewer

Improved Audio Display

The Camera Switcher can now display:

Audio waveforms from clips or Story tracks

This removes the need to switch back to the FCurve Editor.

New Undo Window

A new Undo panel allows:

Detailed command history viewing

Editing of undo stack levels

Performance Improvements

Faster Image Loading

Images now load in parallel when opening scenes, significantly improving performance for large files.

C3D Import Improvements

New “Up Axis Used” option

Better control over axis alignment during import

Viewport Selection Accuracy

Improved object selection behavior for:

Cameras

Locators

Other scene elements

Story Tool Improvements

Enhanced stability and workflow improvements based on feedback from advanced users.

MotionBuilder Resources

Users can:

Share knowledge

Ask questions

Explore topics

via the MotionBuilder Forum.