id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
912	CABAC context initialization at start of tile and dependent slice segment.	bheng	bbross	"If the current coding tree block is the first coding tree block in a tile and also the first coding tree block in a dependent slice segment (see example in Figure 6-5), the Initialization Process in Section 9.2.1 will fail to reinitialize the arithmetic decoding context.  Instead, the state will be copied from the end of the previous tile, creating a cross-tile decoding dependency.

There should be an additional case here to check for the start of a tile.  Something like the following:

{{{
#!div style=""font-size: 80%""

The context variables of the arithmetic decoding engine are initialized as follows.

* If the current coding tree block is the first coding tree block in a tile, the initialization process for context variables is invoked as specified in subclause 9.2.1.1.

* Otherwise, if entropy_coding_sync_enabled_flag is equal to 1, ...
}}}


The HM-9.1 software has the same issue. A separate ticket will be filed for the software bug."	defect	closed	minor		Text	D9 (K1003) v11	fixed		bbross wjhan jct-vc@…