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implement mebx Key namespaces #358

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Merged
podborski merged 1 commit into from
May 12, 2026
Merged

implement mebx Key namespaces #358

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5 changes: 5 additions & 0 deletions data/key-namespaces.csv
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code,description,specification
mdta,Reverse DNS naming convention,QT
me4c,Metadata sample entry four-character-code,ISO
udta,QuickTime user data,QT
uiso,ISO user data,ISO
13 changes: 13 additions & 0 deletions src/app/(rest)/registered-types/key-namespaces/page.mdx
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import { DataDisplay } from "@/components";

export const metadata = {
title: "Key Namespaces"
};

# Key namespaces

Multiplexed timed metadata tracks (`mebx`) in ISO/IEC 14496-12 use the `MetadataKeyDeclarationBox` (`keyd`) to declare the type and interpretation of metadata keys carried in each sample entry. The `key_namespace` field is a 4CC that identifies the domain and structure of the associated `key_value`.

## Registered key namespaces

<DataDisplay csv="key-namespaces" />
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