#943 closed defect (fixed)

JVET-Q0346: Non-existent scaling list default matrix

Reported by: jennylai Owned by:
Priority: minor Milestone:
Component: spec Version: VVC D8 vB
Keywords: Cc: ksuehring, bbross, XiangLi, fbossen, jvet@…

Description

According to the specification text, when slice_scaling_list_present_flag is equal to 0, the scaling list data used for the current picture is "the default scaling list data derived specified in clause 7.4.3.21".

However, there isn't existed any clear description in clause 7.4.3.21 regarding to "the default scaling list data".

It is suggested to change the semantics of slice_scaling_list_present_flag as following. (aligned with ph_scaling_list_present_flag)

slice_scaling_list_present_flag equal to 1 specifies that the scaling list data used for the current slice is derived based on the scaling list data contained in the referenced scaling list APS with aps_params_type equal to SCALING_APS and adaptation_parameter_set_id equal to ph_scaling_list_aps_id. slice_scaling_list_present_flag equal to 0 specifies that the scaling list data used for the current slice is set to be equal to 16 ...


Change history (1)

comment:1 Changed 19 months ago by yk

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

This is a valid issue. It has been fixed in Q2001-vE (which has just been released), in a systematic manner, together with fixes of other technical/editorial bugs related to scaling list, involving changes to the names of the SPS/PH/SH syntax elements on scaling list, their semantics, and the use of them in controlling the scaling process. Please check the text in vE.

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