Features

• Dockable & Floatable UI: The panel can be docked anywhere in the Godot editor or used as a floating window
• Multiple Animations: Add as many animation FBX files as you need
• Texture Conflict Detection: Automatically detects and warns about conflicting textures between files
• GLTF/GLB Export: Supports both GLTF and GLB output formats

Installation

1. Copy the addons/animation_combiner folder to your Godot project directory
2. Open your project in Godot
3. Go to Project > Project Settings > Plugins
4. Enable the "Animation Combiner" plugin
5. Add the path to the blender executable if not installed on the system
6. Add in your base model
7. Add in the animations you want to combine into that base model
8. Assign an export path, make sure to put the extension at the end of your path otherwise it wont work (.gltf or .glb)
9. Click "Export Combined GLTF"

So far I have only used this with Mixamo downloads. The other available tools were buggy.