Skip to main content

Matroska Media Container Codec Specifications

The information below is for an old version of the document.
Document Type
This is an older version of an Internet-Draft whose latest revision state is "Active".
Expired & archived
Authors Steve Lhomme, Moritz Bunkus, Dave Rice
Last updated 2024-01-02 (Latest revision 2023-07-02)
RFC stream Internet Engineering Task Force (IETF)
Additional resources Mailing list discussion
Stream WG state WG Document
Associated WG milestone
Jun 2025
Submit specification for Matroska Media Container Codec Specifications to IESG (Standards Track)
Document shepherd (None)
IESG IESG state Expired
Consensus boilerplate Yes
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document defines the Matroska codec mappings, including the codec ID, layout of data in a Block Element and in an optional CodecPrivate Element.


Steve Lhomme
Moritz Bunkus
Dave Rice

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)