#758 closed defect (fixed)
spec not aligned with adoption and software on ACT Qp offsets
| Reported by: | LGE_VCC | Owned by: | |
|---|---|---|---|
| Priority: | minor | Milestone: | |
| Component: | spec | Version: | VVC D7 vE |
| Keywords: | Cc: | ksuehring, bbross, XiangLi, fbossen, jvet@… |
Description
In spec JVET-P2001-vE 8.7.3, Scaling process for transform coefficients, Eq 1133 and 1136, ACT QP offsets are -5 for all components Y, CbCr, Cb, Cr) .
This is not aligned with the the adopted JVET-P0517 and VTM7.1 software, in which ACT QP offsets are -5,-5, -5, -3 for Y, CbCr, Cb, Cr respectively.
Propose to align the spec with the adopted JVET-P0517 and VTM7.1.
Jane
Attachments (1)
Change history (4)
Changed 5 years ago by LGE_VCC
comment:1 Changed 5 years ago by xyxiu
As the proponent of JVET-P0517, it is confirmed there is mismatch between the spec and VTM software on ACT QP offsets. We agreed that the spec should be aligned with the software.
comment:2 Changed 5 years ago by bbross
- Resolution set to fixed
- Status changed from new to closed
Thanks for reporting!
This has been fixed in JVET-Q2001-v5 with the adoption of JVET-Q0128.
comment:3 Changed 5 years ago by bbross
I meant it was fixed with the adoption of JVET-Q0820 "ACT common text for bug fixes and transform change"
proposed fix