Opened 11 years ago

Closed 11 years ago

#79 closed defect (fixed)

VLC bug when MDDT is turned off

Reported by: wjhan Owned by:
Priority: major Milestone:
Component: HM Version:
Keywords: Cc: fbossen, ksuehring, davidf, jct-vc@…

Description

As a MDDT tester in TE12, we found the following problem:

TMuC VLC encodes first 64 coefficients of transformed residual in intra (after TMuC 0.5), but when MDDT is turned off, interleaved coding of TMuC 0.1 is used.

Furthermore, we found that turning off MDDT disables RDOQ in intra modes.

It should be changed as: (1) enabling RDOQ when MDDT=0 (2) same coding method (first 64 coefficients) for MDDT=0 and 1.

It affects two tests (low-complexity configuration only) in TE12: (1) MDDT-off test (2) MDDT-off + ROT-off combination test.

Patch can be applied for this without affecting all other tests in TE12.

Change History (6)

comment:1 follow-up: Changed 11 years ago by fbossen

Is a patch available?

comment:2 in reply to: ↑ 1 Changed 11 years ago by wjhan

Replying to fbossen:

Is a patch available?

No, we just found it. It takes 1-2 days including simple testing.

comment:3 Changed 11 years ago by fbossen

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

Fixed in r199

comment:4 Changed 10 years ago by davidf

  • Component set to HM

Updating component after adding WD (Text) tickets

comment:5 Changed 10 years ago by davidf

  • Cc fbossen ksuehring davidf added

comment:6 Changed 10 years ago by davidf

  • Cc jct-vc@… added
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  • David Flynn(Subscriber, Participant)
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  • Karsten Suehring(Subscriber, Always)
  • Woo-Jin Han(Reporter, Participant)