formation is often denoted as header information. The slice data partition A header contains all the syntax elements of the slice header, and additionally a slice id that are used to associate the slice data partitions B and C with the slice data partition A. The slice data partition B and C headers contain the slice_id syntax element that establishes their association with the slice data partition A of the slice. Rec. ITU-T H.264 (01/2012) 8.2.4 Decoding process for reference picture lists construction This process is invoked at the beginning of the decoding process for each P, SP, or B slice. Decoded reference pictures are marked as "used for short-term reference" or "used for long-term reference" as specified by the bitstream and specified in clause 8.2.5. Short-term reference pictures are identified by the value of frame_num. Long-term reference pictures are assigned a long-term frame index as specified by the bitstream and specified in clause 8.2.5. Clause 8.2.4.1 is invoked to specify the assignment of variables FrameNum, FrameNumWrap, and PicNum to each of the short-term reference pictures, - the assignment of variable LongTermPicNum to each of the long-term reference pictures. Reference pictures are addressed through reference indices as specified in clause 8.4.2.1. A reference index is an index into a reference picture list. When decoding a P or SP slice, there is a single reference picture list RefPicList0. When decoding a B slice, there is a second independent reference picture list RefPicList1 in addition to RefPicList0. At the beginning of the decoding process for each slice, reference picture list RefPicList0, and for B slices RefPicListl, are derived as specified by the following ordered steps: 1. An initial reference picture list RefPicList0 and for B slices RefPicList1 are derived as specified in clause 8.2.4.2. When ref_pic_list_modification_flag_10 is equal to 1 or, when decoding a B slice, ref_pic_list_modification_flag_1 is equal to 1, the initial reference picture list RefPicList0 and, for B