Opened 4 years ago

Closed 4 years ago

#8521 closed defect (invalid)

Hevc decoder reports invalid cu_qp_delta

Reported by: Jovasa Owned by:
Priority: normal Component: undetermined
Version: git-master Keywords: HEVC decoder
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no


Summary of the bug:

HEVC decoder incorrectly reports a invalid cu_qp_delta when it claiming it should be in range [-26, 25], additionally the video is decoded incorrectly creating green artifacts or in extreme cases turning the video completely green. However the reference decoder has no problem decoding the video implying the HEVC decoder in ffmpeg is incorrect.

How to reproduce:

% ffmpeg -i input output
ffmpeg version: master

Attachments (1)

incorrect_valid_range_for_qp_adjustment.265 (190.0 KB ) - added by Jovasa 4 years ago.

Download all attachments as: .zip

Change History (2)

comment:1 by Jovasa, 4 years ago

Resolution: invalid
Status: newclosed

After further investigation into the issue and looking through the standard it seems that ffmpeg and OpenHEVC are in fact working correctly and the reference encoder is incorrect.

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