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As needed, these channels are mapped into the absorption, scattering, and emission channels.

VDB Color : Because Octane uses VDB channels or grids to shade the volume, it is essential to have similar channels in the Explosia VDB output.

The same grid can be mapped to all three Octane.

If not, Octane will make an arbitrary choice frame by frame, which can result in certain undesirable results. If a VDB contains multiple channels, these channels must be assigned.

VDB Object Grids/Channels : All VDBs give channels/grids that contain various types of data.

It is necessary to make the Z value negative (typically -1) in order to correct this.

Explosia Volume Position Offset : Because Octane and Explosia use different coordinate systems, the location of the Explosia volume when loaded into the Octane VDB Volume object will be different.

If motion blur is needed, enable the Velocity channels before to simulation and save them as part of the Octane VDB Volume object. Explosia must first be simulated and then saved in OpenVBD format before being loaded into the Octane VDB Volume object and rendered. Octane will render Explosia output using the Octane VDB Volume object.