18. The apparatus of claim 13 , wherein the one or more processors are further configured to: code a first syntax element that indicates whether a default window size is used for the plurality of contexts.
18. The apparatus of claim 13 , wherein the one or more processors are further configured to: code a first syntax element that indicates whether a default window size is used for the plurality of contexts. 21. The apparatus of claim 18 , wherein, to code the first syntax element, the one or more processors are configured to code a slice header of a current slice including the first syntax element, wherein the first syntax element indicates whether the default window size is used for the plurality of context models when CABAC coding bins of the current slice.