 1, and 2 correspond to the Y, Cb, and Cr planes, respectively. NOTE - There is no dependency between the decoding processes of pictures having different values of colour_plane_id Rec. ITU-T H.264 (01/2012) redundant_pic_cn shall be equal to 0 for coded slices and coded slice data partitions belonging to the primary coded picture. The redundant pic_cnt shall be greater than 0 for coded slices and coded slice data partitions in redundant coded pictures. When redundant_pic_cn is not present, its value shall be inferred to be equal to 0. The value of redundant_pic_cnt shall be in the range of 0 to 127, inclusive. The presence of a slice data partition B RBSP is specified as follows: If the syntax elements of a slice data partition A RBSP indicate the presence of any syntax elements of category 3 in the slice data for a slice, a slice data partition B RBSP shall be present having the same value of slice i id and redundant_pic_cn as in the slice data partition A RBSP. Otherwise (the syntax elements of a slice data partition A RBSP do not indicate the presence of any syntax elements of category 3 in the slice data for a slice), no slice data partition B RBSP shall be present having the same value of slice id and redundant_pic_cnt as in the slice data partition A RBSP. 7.4.2.9.3 Slice data partition C RBSP semantics When slice data partitioning is in use, the coded data for a single slice is divided into three separate partitions. Slice data partition C contains all syntax elements of category 4. Category 4 syntax elements include all syntax elements in the residual( ) syntax structure and in syntax structures used within that syntax structure for collective macroblock types P and B as specified in Table 7-10. slice_id has the same semantics as specified in clause 7.4.2.9.1. our_plane id has the same semantics as specified in clause 7.4.2.9.2. redundant_pic_cr has the same semantics as specified in clause 7.4.2.9.2. The presence of a slice data partition C RBSP is specified as follows: If the syntax elements of a slice 