Opened 7 months ago

Closed 6 months ago

#273 closed defect (fixed)

Wrong HMVP table size

Reported by: lizhang Owned by:
Priority: minor Milestone: VVC D5 v8
Component: spec Version: VVC D5 v7
Keywords: Cc: ksuehring, bbross, XiangLi, fbossen, jvet@…

Description

The HMVP table size is fixed to be 5 as in the software and JVET-M0436, but the specification uses (maximum merge number - 1) which will cause mismatch between SW and specification when maximum merge number is less than 6.

Suggested fixes are as follows:

In sub-clauses 8.6.2.6 and 8.5.2.16 for the Updating process for the history-based motion vector predictor candidate list, replace the "MaxNumMergeCand − 1" by 5.

Change history (6)

comment:1 Changed 7 months ago by ccc2384823

I agree that it's reasonable to do VTM / WD alignment as your discussion

But, I think maybe a new proposal to fix it may be better.
It's suggested that maybe a new proposal will be needed ( instead of using ticket to do normative change) for this issue in next JVET meeting.

Thanks!

ChunChia from MediaTek

comment:2 Changed 7 months ago by LiZhang

Please note that using fixed table size is what has been adopted. You may refer to the following meeting notes:

Reduce HMVP number from 6 to 5

In addition, the specification is not aligned with the software. I don't think it is necessary to make a proposal to fix typos.

comment:3 Changed 7 months ago by bbross

  • Version changed from VVC D5 v5 to VVC D5 v6

comment:4 Changed 7 months ago by bbross

  • Version changed from VVC D5 v6 to VVC D5 v7

comment:5 Changed 6 months ago by bbross

  • Milestone set to VVC D5 v8

comment:6 Changed 6 months ago by bbross

  • Resolution set to fixed
  • Status changed from new to closed

Fixed in D5 v8

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