Subject: [Cellar] [Technical Errata Reported] RFC9559 (8615)
From: RFC Errata System <[email-masked]>
To: [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked], [email-masked]
Cc: [email-masked], [email-masked], [email-masked]
Date: Mon, 27 Oct 2025 06:54:28 -0700 (PDT)
List-Id: Codec Encoding for LossLess Archiving and Realtime transmission <cellar.ietf.org>

The following errata report has been submitted for RFC9559,
"Matroska Media Container Format Specification".

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You may review the report below and at:
https://www.rfc-editor.org/errata/eid8615

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Type: Technical
Reported by: Steve Lhomme <[email-masked]>

Section: 5.1.4.1.24

Original Text
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   path:  \Segment\Tracks\TrackEntry\AttachmentLink
   maxOccurs:  1
   maxver:  3

Corrected Text
--------------
   path:  \Segment\Tracks\TrackEntry\AttachmentLink
   maxver:  3

Notes
-----
The "maxOccurs" set to 1 is bogus. There can more more than one AttachmentLink in a TrackEntry. It should be removed to allow any number of AttachmentLink per TrackEntry.

This corresponds to this fix: https://github.com/ietf-wg-cellar/matroska-specification/pull/932

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RFC9559 (draft-ietf-cellar-matroska-21)
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Title               : Matroska Media Container Format Specification
Publication Date    : October 2024
Author(s)           : S. Lhomme, M. Bunkus, D. Rice
Category            : PROPOSED STANDARD
Source              : Codec Encoding for LossLess Archiving and Realtime transmission
Stream              : IETF
Verifying Party     : IESG