use this https://gitee.com/cmoyuer/vrchat-avatar-toolkit/releases, and it works pretty fine, it takes in a VMD and returns to what it looks like a ScriptableObject that contains the newly created AnimationClip that’s the same as the provided VMD but now as an AnimationClip.

You can find it in here https://forum.ripper.store/topic/43500/frieren-by-kleymir_?_=1733745252524