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Furthermore, this document, as amended by the corresponding amendment for Gaussian splat support, also specifies the use of the visual volumetric video-based coding mechanism for 3D scenes represented using Gaussian splat. In such representations, each point of the point cloud corresponds to a Gaussian primitive in 3D space and is described by a set of parameters, including at least its 3D position and additional attributes such as covariance, opacity and appearance coefficients. These parameters are mapped to geometry and attribute components within the V-PCC framework and coded using the same video-based mechanism. This enables efficient compression of Gaussian-splat-based scene representations and provides a coding solution suitable for Gaussian splat coding applications.