Search Results for "JVET-U0073"
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JVET-U0073 AHG2: Errata on referencing of parameter sets [K. Sühring, R. Skupin, Y. Sanchez, T. Schierl (Fraunhofer HHI)]
In the discussion of merge request #1971 it was noted that the specification text was unclear regarding the availability of a suffix APS to the decoding process. It seems the specification text does not clearly express that a picture cannot refer to a suffix APS in the same PU. Ticket #1443 was filed for this issue. During further investigation it was found that there may be some unclarity about references to parameter sets in general. This contribution proposes text improvements to express previous meeting decisions more clearly.
It is proposed to add the following sentence to the semantics of each syntax element that is a reference to a parameter set ID (adapted to the appropriate syntax elements). For example, for sh_alf_cc_cr_aps_id:
If multiple APS with the same value of aps_adaptation_parameter_set_id exist in the bitstream, the PH refers to the APS with aps_adaptation_parameter_set_id equal to sh_alf_cc_cr_aps_id, that most closely precedes the VCL NAL unit in decoding order, which refers to the PH.
It was generally agreed that the specification needs to clarify this item. A problem may be that the spec could be interpreted such that first all related NAL units are parsed before reference is made. It might not be clear that the second parameter set with same ID which is not used yet should not be parsed before the decding of the current picture is done.
It was pointed out that currently a note exists which clarifies that the suffix APS NAL unit...
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...
JVET-V0002 JVET AHG report: Draft text and test model algorithm description editing (AHG2) [B. Bross, J. Chen, C. Rosewarne, F. Bossen, J. Boyce, S. Kim, S. Liu, J.-R. Ohm, G. J. Sullivan, A. Tourapis, Y.-K. Wang, Y. Ye]
Output documents produced:
- JVET-U1004 Errata report items for VVC, VSEI, HEVC, AVC, Video CICP, and CP usage TR
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. This document also provides publication status backgrounds of these standards.
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)