JVET-AC0346 Draft Errata report items for VVC, VSEI, HEVC, AVC, Video CICP, and CP Usage TR [B. Bross, I. Moccagatta, C. Rosewarne, G. J. Sullivan, Y. Syed, Y.-K. Wang (editors)]

This document contains a list of reported errata items for VVC, VSEI, HEVC, AVC, Video CICP, and the TR on usage of video signal type code points, for tracking purposes. Some of the items have been confirmed by the JVET and have been agreed to require fixing, while some other items have not yet been confirmed (items that are to be confirmed are explicitly indicated). This document also provides publication status backgrounds of these standards.

Incorporated items at the JVET-AB meeting:

• For VVC, incorporated the following items:
  • JVET-AB0223: Text improvement for Timing / DU information SEI message in HEVC and VVC
  • Added a NOTE in the HRD text to mention that "leading pictures" associated with a DRAP picture may not be correctly decodable, per the discussion of JVET-AB0055 (On leading pictures design in DRAP SEI Message).
  • Added a NOTE to mention that the definition of IRAP in VSEI covers the case of GDR with ph_recovery_poc_cnt equal to 0, per the discussion of JVET-AB0057 (On the associated IRAP for DRAP and EDRAP pictures).
  • Tickets #1564, #1568, #1569, and #1572 (it was noted that the fix suggested for #1564 is editorial)
  • JVET-AB0120: Addition of interpolation for "initial CPB removal delay offset"
• For HEVC, incorporated the following items:
  • JVET-AB0223: Text improvement for Timing / DU information SEI message in HEVC and VVC
  • On conformance indication of the Multiview Main, Scalable Main, Scalable Main 10, and 3D Main profiles (resulted from a discussion between Alexis Tourapis and Gary Sullivan – thanks!)
  • On inference of high_precision_offsets_enabled_flag (resulted from a discussion between Andy Fu and Gary Sullivan – thanks!)
  • On a redundant sentence in the definitionn of next_bits( n ) from Gary Sullivan
  • On addition the parenthetic abbreviation TB to the text in clause 9.3.3.1 (suggested by Cliff Reader– thanks!)
  • On indention of item 3 in the paragraph just below Equation 8-14 in clause 8.4.1 (reported and suggested by Cliff Reader – thanks!)
  • On redudnant call to clause 8.6.1 (reported by Cliff Reader – thanks!)
  • JVET-AB0120: Addition of interpolation for "initial CPB removal delay offset"
• For AVC, incorporated the following items:
  • JVET-AB0120: Addition of interpolation for "initial CPB removal delay offset"

Incorporated items at the JVET-AA meeting:

• For VVC: Added an errata item for VVC conformance.
• For VSEI: Added a pointer of some HEVC errata items that also apply for VSEI in section 4.2.
• For HEVC: Removed various items that have been addressed during the editing of the DIS text of HEVC 5^th edition in WG05 N00128, and added some editor's notes for the remaining items.
• For AVC:
  • Added changes on motion vector value ranges, based on JVET meeting minutes noted under JVET-AA0222.
  • Added a pointer of some HEVC errata items that also apply for AVC in section 4.2.

Incorporated items at the JVET-Z meeting:

• For AVC, corrections to texts related to alpha blending corresponding to the changes adopted to VSEI from JVET-Z0119.
• Updated the summary and publication status for VVC.
• Updated the summary and publication status for VSEI.
• Updated the summary for HEVC.

Incorporated items at the JVET-Y meeting:

• Removed all errata items for VVC and VSEI, due to that for both VVC and VSEI the second edition texts are being prepared by both ITU-T and ISO/IEC, and all the errata items have been incorporated therein, including fixes for bug tickets #1533 and #1534 for VVC (fixes for these two tickets have not been included in previous versions of the errata report).
• Removed errata items for AVC that have been resolved in both the latest ITU-T text (08/2021) and the new submission (MDS21132_WG05_N00098) of the ISO/IEC 10th edition text.

Incorporated items at the JVET-X meeting:

• Updated the publication status of the standards
• For VVC (the changes are included in an attachment to this document):
  • Some changes resulted from reports/suggestions by Yue Yu and Frank Bossen (thanks!)
  • Various changes resulted from reports/suggestions by Peter de Rivaz (huge thanks!)
• For HEVC (the changes are included both below and in an attachment to this document):
  • Some changes resulted from reports/suggestions by Yue Yu, Frank Bossen, and Cliff Reader (thanks!)
  • Some changes to the semantics of the entry point offset syntax element, resulted from the discussion of JVET-X0050
  • Changes to the semantics of the alpha channel information SEI message resulted from the discussion of JVET-X0059
• For AVC (the changes are included in an attachment to this document):
  • Some changes to the semantics of the alpha blendnig related syntax elements in clause 7.4.2.1.2, message resulted from the discussion of JVET-X0059

Incorporated items at the JVET-W meeting:

• For VVC (the changes are included in an attachment to this document):
  • Fix for tickets #1488, #1511, #1491, #1493, #1494
• For HEVC:
  • Added the attachment for HEVC from JVET-W0187, which includes the following fixes:
    • Correcting an “off by one” error in the loop counter for ar_num_object_updates, which indicates the number of updated annotated objects for the annotated regions SEI message.
    • Adding a description of the purpose of some variables that are derived in the semantics of the annotated regions SEI message
    • Adding a missing descriptor to specify the type of coding for the depth_nonlinear_representation_model[ i ] syntax element (the same as used in another specification, so clearly what was intended) for the depth representation information SEI message
    • Adding missing range specifications for a few syntax elements of the depth representation information SEI message
    • Miscellaneous very small cleanups of consistency, grammar and clarity, and correction of typographical errors.
• For AVC:
  • Added the attachment for HEVC from JVET-W0187, which includes the same list of fixes as above for HEVC.

Incorporated items at the JVET-V meeting:

• For VVC (the changes are included in an attachment to this document):
  • Fix for ticket #1486
• For HEVC
  • Removed the item on the absence of “persistence flag” for the annotated regions SEI message (this was agreed to be removed at the JVET-T meeting in October 2020, but the decision was overlooked)

Incorporated items at the JVET-U meeting:

• For VVC (the changes are included in an attachment to this document):
  • Some minor editorial corrections and improvements (JVET-U0073, JVET-U0085, and one item from Hendry)
  • Fixes for tickets #1416, #1428, #1432, #1454, and #1469
• For AVC: Added a reference to JVET-T1006-v1 for the errata changes, and removed the actual errata text changes from this document. (JVET-U0049)

Decision: All items of JVET-AC0346 confirmed. Items remain in JVET-AC1004 until corresponding changes are done in both ITU-T and ISO/IEC versions. It is intended to include all clarified items into the HEVC FDIS and VVC preliminary FDIS.