Unreal PSK Importer for Autodesk Maya

Unreal PSK Importer is a full-featured plugin for Autodesk Maya. It brings raw Unreal Engine .psk skeletal meshes directly into Maya — including geometry, skeleton, weights, materials, UVs, vertex colors, and morph targets. Pivot handling, orientation, and clean binding are all built-in.

Key Features

• Pivot-safe group rotation - Root joint or bounding box pivot, with optional baked orientation.
• Geometry - Fast mesh creation via Maya API, correct face winding, normals (imported or softened).
• Skeleton & Skinning - Creates joint hierarchy, applies scale & bone length, binds with fast weights (MFnSkinCluster.setWeights).
• Materials - Imports PSK materials + per-face assignments, reuses existing materials, supports .props.txt references.
• UVs - Main UVs (map1) plus all EXTRAUVS* channels → EXTRAUV0, EXTRAUV1….
• Vertex colors - Imports per-face-vertex or per-point colors, handles SRGBA → linear space.
• Morph targets - Converts PSK morphs into Maya blendShapes.
• Options - Fully customizable import via flags.

Compatibility

• Autodesk Maya 2022-2025+
• Python 3 only

Installation

1. Copy unrealPSKImporter.py into your Maya plug-ins folder:
   C:\Users\<username>\Documents\maya\<version>\plug-ins
2. In Maya: Windows → Settings/Preferences → Plug-in Manager
3. Enable Loaded (and optionally Auto Load).

Usage

• File → Import → choose .psk
• File → Import → Unreal PSK → Options → File Type Specific Options – here you can enable/disable import of skeleton, mesh, UVs, vertex colors, morphs, etc.
• Import options can also be passed via options string.
• Python command:
  import maya.cmds as cmds;
cmds.file("path/to/model.psk", i=True, type="Unreal PSK")

Why use this tool?

Importing PSK assets into Maya is notoriously messy. This plugin provides a fast, clean, and production-ready workflow:

• Accurate skeleton & weights
• Preserved UVs & materials
• Optional vertex colors & morphs
• Pivot/orientation handling built in

With this importer you can bring Unreal Engine assets into Maya with full fidelity, ready for animation, rigging, or further development.

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