ISO/IEC 13818-4:2004/COR2:2011 is a corrigendum linked to the technical framework for moving pictures and associated audio information, specifically the conformance testing guidance in ISO/IEC 13818-4. As a supporting document to the parent reference, it is relevant when organizations need to review updates, corrections, or clarifications that affect verification activities, technical validation, and compliance workflows. For engineering teams, test laboratories, and procurement specialists, ISO/IEC 13818-4:2004/COR2:2011 helps ensure that documented evaluation aligns with the corrected requirements used in conformity assessment and product review.

Overview of ISO/IEC 13818-4:2004/COR2:2011

ISO/IEC 13818-4:2004/COR2:2011 is the second corrigendum to Part 4 of the ISO/IEC 13818 series, which addresses conformance testing for coded moving pictures and associated audio information. In practical terms, it is intended to modify or clarify the parent document rather than serve as a standalone technical specification. That makes it useful during technical review, laboratory evaluation, and documentation control, particularly where precise interpretation of testing provisions affects engineering documentation, compliance preparation, or product evaluation.

Compliance applications of ISO/IEC 13818-4:2004/COR2:2011

This corrigendum is typically consulted in compliance workflows where conformance testing criteria must remain aligned with the corrected text of the parent reference. It may be used by laboratories validating coded audio-visual systems, by manufacturers maintaining technical documentation, and by procurement teams confirming that the required reference set is complete. For organizations managing quality workflows, the document supports operational consistency in test planning, documented evaluation, and conformity assessment preparation tied to ISO/IEC 13818-4:2004/COR2:2011.

Importance of compliance with ISO/IEC 13818-4:2004/COR2:2011

Using the corrigendum alongside the parent standard helps reduce the risk of relying on outdated or inconsistent conformance testing text. That is important for interoperability, technical validation, and repeatable test outcomes across engineering and laboratory environments. In procurement and compliance contexts, it also supports clearer specification review and more reliable conformity assessment preparation. For teams responsible for maintaining technical documentation, ISO/IEC 13818-4:2004/COR2:2011 can help preserve quality assurance and regulatory readiness by ensuring the corrected requirements are reflected in the workflow.

• Supporting corrigendum to the conformance testing provisions in the ISO/IEC 13818 series
• Relevant for technical review, test planning, and documented evaluation activities
• Useful in compliance workflows that depend on the corrected wording of the parent reference
• Helps maintain consistency in laboratory validation and conformity assessment records
• Supports procurement and engineering documentation control for audio-visual coding systems