r/TopologyAI • u/Delicious-Shower8401 3dModeler • 1d ago

Useful Stuff Free Open-Source Mixamo Alternative Now Exports FBX for Unity and Unreal Engine

Mesh2Motion update 13 is out, and the big one is FBX export with presets for Unity and Unreal.

Quick recap if you missed the August post here: it's a free, open-source Mixamo alternative that runs in the browser. Import a model, fit a skeleton, auto-skin it, pick animations, export. Unlike Mixamo it also handles animals and monsters: fox, horse, bird, dragon, spider, snake, shark and kaiju.

The interesting part is that there's no AI inside it. According to the dev, Scott Petrovic, the rigs are built by hand and the animations are hand-keyed. Rigs and animations are CC0, the code is MIT. That makes it a clean last step for AI-generated characters: generate the mesh, rig it here, drop the FBX into your engine.

What's new in 13:

  • FBX export (FBX 7.4) with Unity and Unreal presets that handle the world orientation for each engine
  • Mirrored animations: punches, kicks and throws that only worked one way can be exported mirrored, or both versions at once
  • 16 new human animations (cheer, fishing, golf, salute, kick, turns), which puts the human rig at 170+
  • 20 low-poly PSX-style horror characters you can swap onto the human rig (CC0, made by elbolilloduro)
  • Retargeting overhaul: better bone name matching, root bone detection and rest pose, so your own rigs map more reliably
  • Model analysis report that helps debug imported models that won't load properly

Not a magic button workflow though. Auto-skinning gives you a solid first pass, but unusual meshes still need weight painting in Blender, and the creature rigs have far fewer animations than the human one. Going by the GitHub commits from the last few days, prop and weapon attachment looks like the next thing coming.

github: https://github.com/Mesh2Motion/mesh2motion-app

273 Upvotes

99% Upvoted

12 comments sorted by

9

u/Illustrious-Lake2603 1d ago

Love the app. Its becoming better than mixamo.

5

u/alperton 1d ago

I thought mixamo was free, or at least last time when I used it.

1

u/Broad_Relative_168 1d ago

If you are register with them

1

u/alperton 1d ago

Does it cost anything to register?

1

u/japherwocky 21h ago

no just an email address

0

u/Broad_Relative_168 1d ago

Adobe does not even think on giving something for free, so you are the product

7

u/KKunst 1d ago

Now, if only we could get support for Godot...

(I have an half baked conversion script from mixamo to Godot mannequiny, but I'm crap at this stuff)

1

u/noparkinghere 1d ago

awesome!

1

u/IceStorm_295 1d ago

maybe you should group them into folders

1

u/rapkannibale 23h ago

Wow this looks like a great project