Opened 7 months ago

Closed 2 months ago

#225 closed defect (wontfix)

Alignment between spec and implementation in Affine Merge

Reported by: antoine.robert Owned by:
Priority: minor Milestone:
Component: spec Version: VVC D5 v10
Keywords: Cc: ksuehring, XiangLi, fbossen, jvet@…

Description

In the latest specification, in part 8.4.4.2 (Derivation process for motion vectors and reference indices in subblock merge mode), the 8th point precises that zero affine models are added at the end of the list as:

– The candidate zeroCandm with m equal to (numCurrMergeCand − numOrigMergeCand) is added at the end of subblockMergeCandList and numCurrMergeCand is incremented by 1

But in the current implementation, numCurrMergeCand is not incremented.

Change history (9)

comment:1 Changed 5 months ago by ksuehring

  • Component changed from VTM to spec

comment:2 Changed 5 months ago by bbross

  • Version changed from VVC D4 v6 to VVC D5 v4

comment:3 Changed 4 months ago by bbross

  • Version changed from VVC D5 v4 to VVC D5 v5

comment:4 Changed 4 months ago by bbross

  • Version changed from VVC D5 v5 to VVC D5 v6

comment:5 Changed 4 months ago by bbross

  • Version changed from VVC D5 v6 to VVC D5 v7

comment:6 Changed 3 months ago by bbross

  • Version changed from VVC D5 v7 to VVC D5 v8

comment:7 Changed 3 months ago by bbross

  • Version changed from VVC D5 v8 to VVC D5 v9

comment:8 Changed 3 months ago by bbross

  • Version changed from VVC D5 v9 to VVC D5 v10

comment:9 Changed 2 months ago by bbross

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

It needs to be incremented every time a candidate is added to index the subblockMergeCanList properly.
If there is an issue, it might be a VTM one.

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