RFC 9559, "Matroska Media Container Format Specification", October 2024

Errata ID: 8616
Status: Reported
Type: Technical
Publication Format(s) : TEXT
Reported By: Steve Lhomme
Date Reported: 2025-10-27

Section 22 says:

   (via the CueClusterPosition element). Additional non-mandated
   elements are part of the CuePoint element, such as CueDuration,
   CueRelativePosition, CueCodecState, and others that provide any
   Matroska Reader with additional information to use in the
   optimization of seeking performance.

It should say:

   (via the CueClusterPosition element). Additional non-mandated
   elements are part of the CuePoint element, such as CueDuration,
   CueRelativePosition, CueCodecState, and others that provide any
   Matroska Reader with additional information to use in the
   optimization of seeking performance.

   The absolute timestamp stored in CueTime corresponds to the sum of
   the Cluster Timestamp and the Block Timestamp.  The CodecDelay,
   DiscardPadding and SeekPreRoll are not taken in account.

Notes:

The CueTime was under specified. It wasn't clear what time elements should be included and excluded from that value.

This new chapter adds the missing part. It corresponds to this fix: https://github.com/ietf-wg-cellar/matroska-specification/pull/946

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