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SMPTE Metadata Registry / ST 335 (Society of Motion Picture Television Engineers)

Code System Media specification sold

Since its founding in 1916, SMPTE has developed more than 800 standards, recommended practices, and engineering guidelines, that are currently in force....

SMPTE, from their own og:description

Other media data models

C2PA Content Credentials Information Model EIDR Code System IMF (Interoperable Master Format) SMPTE ST 2067 Information Model IPTC Photo Metadata Standard (International Press Telecommunications Council) Metadata Model MovieLabs Common Metadata (MDDF) Metadata Model MovieLabs Ontology for Media Creation (OMC) Ontology / Vocabulary MPEG-7 / MPEG-21 (Moving Picture Experts Group) Metadata Model
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Model Details
Steward SMPTE
Origin United States national body
Layer Code System
Domain Media
Status live
Access Specification sold by the steward
Go to the steward →
How I know this

Compiled for the API Evangelist data model catalog, then confirmed against the steward's own site.

Confirmed 2026-08-11

Evidence: name evidence 2/3. Found something wrong? Tell me — corrections are cheap and I would rather be right.

Modernity Profile
Access Enclosed
Assessed 33.0% of the rubric

Not enough of this standard was readable to place it in a band. That is a limit of what I could see, not a finding against the standard.

A separate measure from the Kin Score, which rates API providers. This rates how current a standard is in how it is expressed, published and paid for — not how good it is. EDIFACT and X12 score low here and move an enormous share of world trade.

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