id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
685	Mismatch between spec and VTM code for cu_sbt_flag context assignment	fabrice.leleannec		"In VVC draft 7 version 8, the context index for cu_sbt_flag signaling is defined as: ( cbWidth * cbHeight < 256 )  ?  1  :  0

while in VTM7 source code, it is assigned as: ""uint8_t ctxIdx = ( cuWidth * cuHeight <= 256 ) ? 1 : 0;"" 
(methods CABACWriter::sbt_mode and CABACReader::sbt_mode)

Proposal: align the spec on the source code. 
The two methods have same BD-rate performances (0% on average in RA and LDB)



"	defect	closed	minor		spec	VVC D7 vE	fixed		ksuehring bbross XiangLi fbossen jvet@…