ISO IEC 14496-15-2024 amd1-2025 PDF

Full title and description

Information technology — Coding of audio‑visual objects — Part 15: Carriage of network abstraction layer (NAL) unit structured video in the ISO base media file format — Amendment 1: Support for neural‑network post‑filter supplemental enhancement information and other improvements. This amendment updates ISO/IEC 14496‑15:2024 to add carriage and signaling mechanisms for neural‑network post‑filters (SEI messages and file‑format containers), plus related clarifications and improvements.

Abstract

This amendment specifies how Supplemental Enhancement Information (SEI) messages related to neural‑network post‑filters are carried and signaled in ISO Base Media File Format (ISOBMFF) material that contains NAL‑unit structured video (e.g., AVC, HEVC, VVC). It introduces or amends elements such as an SEI information box, neural‑network representation items and configuration properties, and updates normative references to support neural‑network model description and VSEI capabilities. The goal is to permit embedding base post‑processing filters and synchronized neural‑network updates with video samples to enable AI‑based post‑processing during playback.

General information

• Status: Published.
• Publication date: 29 January 2025.
• Publisher: ISO/IEC (International Organization for Standardization / International Electrotechnical Commission).
• ICS / categories: 35.040.40 — Coding of audio, video, multimedia and hypermedia information.
• Edition / version: 7 (Amendment 1 to ISO/IEC 14496‑15:2024).
• Number of pages: 9.

Basic publication metadata above is drawn from the official publication records for ISO/IEC 14496‑15:2024 and its Amendment 1 (issued January 2025).

Scope

This amendment applies to ISO/IEC 14496‑15:2024 (Part 15 of the MPEG‑4 / ISOBMFF family) and deals specifically with the carriage of network abstraction layer (NAL) unit structured video in ISO base media files. It introduces file‑format and metadata enhancements to carry neural‑network post‑filter SEI messages and associated neural‑network representation/configuration units so players and tools can discover, retrieve and apply AI‑based post‑processing filters synchronized with decoded video samples. The amendment is intended for use with AVC, HEVC, VVC and related NAL‑based codecs transported in ISOBMFF.

Key topics and requirements

• Definition and carriage of neural‑network post‑filter SEI messages (e.g., NNPFC and NNPFA types) to describe base post‑filters and activation/update sequences for neural filters in bitstreams.
• Introduction / revision of an SEI Information Box (seii) for ISOBMFF sample entries so players can identify required vs optional SEI messages and optimize playback handling.
• Mechanisms to package neural‑network representation items and configuration properties (nnr1, nnrC / similar) in ISOBMFF to carry neural‑network bitstream units and model configuration alongside media samples.
• Sample entry and scheme information updates allowing signaling of required post‑decoder handling (restricted‑video mechanism / aSEI scheme) so authors can indicate mandatory vs optional SEI processing.
• Normative references and cross‑standard alignment (for example ISO/IEC 15938‑17 for neural network compression and ISO/IEC 23002‑7 for VSEI enhancements) to ensure consistent model description and SEI semantics.
• Editorial and interoperability improvements to ensure robust carriage across ISOBMFF implementations and to facilitate adoption by streaming, playback and content‑creation ecosystems.

Typical use and users

Primary users include media‑file tool and player implementers, codec and encoder vendors, streaming and OTT platforms, content‑delivery and transcoding services, post‑production tool developers, and standards integrators. Typical uses are embedding AI post‑filters and updates in packaged media, enabling players to discover and apply neural post‑processing synchronized with playback, and providing metadata that distinguishes required playback enhancements from optional quality improvements.

Related standards

Closely related documents include ISO/IEC 14496‑15:2024 (the base Part 15 standard), ISO/IEC 15938‑17 (neural network compression format for multimedia descriptors), ISO/IEC 23002‑7 (Versatile Supplemental Enhancement Information — VSEI) and codec standards referenced by ISOBMFF such as ISO/IEC 14496‑10 (AVC/H.264), ISO/IEC 23008‑2 (HEVC/H.265) and ISO/IEC 23090‑3 (VVC/H.266). The amendment aligns SEI semantics and ISOBMFF packaging with these referenced standards.

Keywords

ISOBMFF, NAL units, neural‑network post‑filter, SEI, NNPFC, NNPFA, SeiInformationBox (seii), neural‑network representation (nnr), nnrC, VSEI, MPEG, AVC, HEVC, VVC, media packaging.

FAQ

Q: What is this standard?

A: It is Amendment 1 (2025) to ISO/IEC 14496‑15:2024, a technical amendment that adds support for carrying neural‑network post‑filter supplemental enhancement information and related file‑format improvements within ISO Base Media File Format packages.

Q: What does it cover?

A: It defines how SEI messages for neural‑network post‑filters are represented and signaled in ISOBMFF, adds or updates boxes/entries (for example, an SEI information box), and provides ways to carry neural‑network representation and configuration data so players can apply AI‑based post‑processing synchronized with video samples.

Q: Who typically uses it?

A: Media player developers, packagers, encoder/transcoder vendors, streaming service engineers, content creators who wish to embed AI post‑processing metadata, and standards/interoperability testers.

Q: Is it current or superseded?

A: Current — the amendment was published 29 January 2025 and applies to ISO/IEC 14496‑15:2024. It is an active published amendment and is intended to be used together with the 2024 Part 15 text.

Q: Is it part of a series?

A: Yes — it is Part 15 of the broader ISO/IEC 14496 (MPEG‑4 / ISOBMFF family) series of standards; it specifically amends the Part 15 document that governs carriage of NAL‑unit structured video in ISOBMFF.

Q: What are the key keywords?

A: Neural‑network post‑filter, SEI, ISOBMFF, NAL, NNPFC, NNPFA, seii, nnr, nnrC, MPEG, VSEI.