Rendering AMASS motion in Blender causes the model to spin - import_motion_blender.py

[bw-pt]

Hi there,

When trying to view a sample AMASS npz motion file using import_motion_blender.py, the model would spin in space.

I am assuming it's the rotation calculation that is off, could somebody help take a look?

Thanks.

06-24-2025.09.19.32.webm

[bw-pt]

Commenting out the line that processes pelvis rotation helps quite a bit, but it means the model itself would not move spatially at all. I am this below line is where the main issue lies:

bone.rotation_euler = (sRot.from_rotvec(pose[:3]) * sRot.from_euler('xyz', np.array([np.pi / 2, 0, np.pi]))).as_rotvec()