Gaussian Splat Animation and Voxelization in Houdini
Animate and voxelize Gaussian splat using GSOP, point attribute and copy to point
Animation
Create Mask in Attribute Wrangle SOP with relbbox function in VEX
Final Output
Voxelization
Copy boxes to points with original attribute from GSOP
Node Setup
Equalize Scale - scale attribute from GSOP is vector not pscale (see in geometry spreadsheet)
Remove Orientation and Alpha
Final Output
To export animation with colors, set Pack Primitives to Unpack in USD Export SOP