ISOBMFF Encapsulation for Carriage of G-PCC Bitstream: A Tutorial and Guidelines

This paper presents a tutorial on encapsulating Geometry-based Point Cloud Compression (G-PCC) bitstreams within the ISO Base Media File Format (ISOBMFF). To enhance the storage and transmission efficiency of point cloud data, we analyze and compare the structural characteristics, advantages, and disadvantages of single-track, multi-track, and tile-based encapsulation methods. Additionally, we introduce a method for managing various encoded versions using the alternative track mechanism. This approach enables the optimized utilization of G-PCC data in multimedia environments. This study demonstrates the potential of ISOBMFF-based encapsulation to ensure compatibility with existing media streaming systems, while improving the efficiency of 3D data transmission and storage.