PyNifly

Export/Import tools between Blender and the Nif format, using Bodyslide/Outfit Studio's Nifly layer. Works with official Blender versions 3.0-4.2. Can handle nifs for Skyrim LE, Skyrim SE, Fallout 4, and Fallout 76, Fallout New Vegas, and Fallout 3.

Windows only.

Full documentation in the wiki.

Features

• Supports FO4, Skyrim LE, Skyrim SE
• Handles tris and base mesh in one step. No need to separate UV seams or triangulate before exporting
• Handles expression and chargen tri files for Skyrim and FO4
• Import tris into an existing mesh or on their own
• Supports Bodyslide tri files on import and export for body morphs
• Handles multiple bodyweights in one step. Export _0 and _1 armor weights for Skyrim from a single mesh.
• Handles Skyrim and FO4 partitions and FO4 segments
• Handles skinned and unskinned meshes correctly. Exports head parts to SE correctly.
• Handles shaders correctly. Set them up in Blender and export.
• Special handling for FO4 connect points on weapons, armor, and workshop parts.
• Some support for animations in nifs.
• Import-and-forget. What you import will behave correctly on export without fiddling.

Background

Outfit Studio has working export/import for a bunch of the Bethesda games. I'm a modder and I've been using the niftools scripts for years, but I've started modding for Fallout 4 and there's no direct support for that at all.

BS/OS has separated much of their code to deal with nif files into a separate library, nifly. I've used this library and some additional OS code as the core of an export/import addon for Blender.

My interest is primarily Skyrim, Skyrim SE, and Fallout 4 so I'll be focusing on supporting those games.

Status

Import/Export of most nifs is complete works well.

Import/Export of animations is currently under development.

Import/Export of Skyrim collisions is complete except for MOPP collisions. Those may never happen. Fallout 4 collisions are not implemented but there's a tool that ships with Fallout to help with that. Check the Collisions page of the wiki (https://github.com/BadDogSkyrim/PyNifly/wiki/Collisions) for more.