id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
1609	NoBackwardPredFlag derivation ambiguity	swarrington		"8.3.6 derivation of NoBackwardPredFlag is as below:
- If DiffPicOrderCnt( aPic, currPic ) is less than or equal to 0 for each active picture aPic in RefPicList0 '''or''' RefPicList1 of the current slice, NoBackwardPredFlag is set equal to 1.
- Otherwise, NoBackwardPredFlag is set equal to 0.

'''or''' seems somewhat ambiguous here.  It could be interpreted that if the DiffPicOrderCnt condition is valid for either L0 or L1 list then you should set NoBackwardPredFlag to 1.  Using '''and''' seems to make the meaning more unambiguous."	defect	closed	minor	H.266/VVC v4	spec	H.266/VVC v3	fixed		ksuehring bbross XiangLi fbossen jvet@…