Overview
ISO/IEC 23090-26:2025 specifies the conformance suite and reference software for carriage of geometry‑based point cloud compression (G‑PCC) data as defined in ISO/IEC 23090‑18. The standard documents the architecture, modules and public API of the reference implementation (libGPCCCarriage and GPCCCarriageApp), the status of ISOBMFF encapsulation support, and a set of conformance test vectors and sample files to validate implementations and interoperability.
Key keywords: ISO/IEC 23090-26, G‑PCC, point cloud compression, ISOBMFF, reference software, conformance suite, GPCCCarriageApp, libGPCCCarriage.
Key topics
- Purpose and scope
- Reference software to validate the written ISO/IEC 23090‑18 specification.
- Conformance test vectors for interoperability testing across applications.
- Architecture
- Extension of the ISOBMFF reference software; consists of a carriage library (libGPCCCarriage) and a command‑line tool (GPCCCarriageApp) for multiplexing/demultiplexing.
- Feature support list
- Documented table of supported boxes, sample entries and features (e.g., GPCCConfigurationBox, GPCCComponentInfoBox, single and multi‑track GPCCSampleEntry, multiplexing/demultiplexing, sub‑samples), including items marked OK, In progress, or Not implemented to indicate implementation status.
- Public API
- Functions for box creation and parsing (e.g., GPCCCreateBox, GPCCParseBox, GPCCParseUnknownBox).
- Sample entry and configuration management routines (e.g., GPCCNewBitstreamSampleEntry, GPCCNewMultiTrackGPCCSampleEntry, GPCCSetGPCCConfigurationRecord, GPCCGetConfigurationInfoFromSampleEntry).
- All public prototypes are provided in GPCCCarriage.h.
- Conformance and test vectors
- Timed and non‑timed G‑PCC conformance tests, with packaged example files to demonstrate feature usage and to exercise interoperability scenarios.
Applications and users
- Codec and tool developers implementing G‑PCC carriage in media players, encoders, packagers and file format tools.
- Media service providers and streaming platform engineers validating point-cloud delivery workflows using ISOBMFF.
- Test labs and QA teams running conformance and interoperability tests against the reference implementation and provided vectors.
- Standards bodies and integrators verifying specification clarity and implementation completeness.
Related standards
- ISO/IEC 23090‑18 - Carriage of geometry‑based point cloud compression data (normative reference).
- ISOBMFF (ISO base media file format) - container and encapsulation practices used by the reference software.
Reference implementation and conformance files are available from the ISO standards portal (see the ISO/IEC 23090‑26:2025 entry).