An apparatus, a method and a computer program for video

The introduction of a processing order nesting (PON) SEI message within the aggregate SEI message framework addresses the limitations of existing SEI message wrapping designs by ensuring consistent persistence and enabling the indication of alternative processing steps and chains, thereby enhancing the efficiency and flexibility of SEI message processing in video coding.

WO2025061324A1 Publication Date: 2025-03-27NOKIA TECHNOLOGIES OY
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Patent Information

Application Number
PCT/EP2024/068666
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-21
Filing Date
2024-07-03
Publication Date
2025-03-27

AI Technical Summary

Technical Problem

The existing SEI message wrapping design for the SEI processing order SEI message has drawbacks such as differing persistence of wrapped SEI messages compared to the SEI processing order SEI message, and inability to indicate alternative processing steps or processing chains.

Method used

An apparatus and method that utilize an aggregate SEI message, referred to as a processing order nesting (PON) SEI message, which includes at least one SEI message with the same persistence and is used in indicated positions within the processing order, allowing for the inclusion of indications relating to alternative processing steps and processing chains.

Benefits of technology

The proposed solution ensures consistent persistence of SEI messages, allows for the indication of alternative processing steps and chains, and improves the efficiency and flexibility of SEI message processing in video coding.

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Abstract

A method comprising: obtaining at least two supplemental enhancement information (SEI) messages relating to a coded video bitstream, the SEI messages being configured to be applied in predetermined positions of a decoding processing chain; arranging at least one of said at least two SEI messages in an aggregate SEI message configured to indicate positions of said at least two SEI messages in said decoding processing chain; and transmitting the aggregate SEI message in or along the coded video bitstream.
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