picture. mv_anchor_pos_lX_flag[ i ] equal to 1 indicates that motion vector anchor position is used in inter prediction for this reference picture. anchor_tile_id_lX[ i ] equal to 0 indicates that the tile identifier based on which a tile position is obtained for deriving a motion vector anchor position as described in other embodiments. [00161] In some embodiments, reference tile id identifiers may be provided (e.g., in a slice header) or inferred for pictures in reference picture list(s). For example, a tile identifier may be provided (e.g., in a slice header) for each instance of the current picture in reference picture list(s). For temporal reference picture or for reference pictures other than the current picture, a reference tile id identifier may be inferred to be equal to the current tile id identifier, or motion vector anchor position may be inferred not to be used. [00162] In some embodiments, in addition to a tile identifier, the horizontal and vertical offsets for a motion vector anchor position may be indicated by a block index indicating the block position relative to a pre-defined position of the tile indicated by the tile identifier, such as the top-left comer of the tile, [00163] In some embodiments, in addition to a tile identifier, the horizontal and vertical offsets for a motion vector anchor position may be indicated with x and y pixel coordinates relative to a pre-defined position of the tile indicated by the tile identifier, such as the top-left comer of the tile. [00164] In some embodiments, the anchor position is configured to be applied when determining the collocated block for a collocated picture in a TMVP operation or similar operations. The anchor position may be conditionally applied, e.g., when a pre-defined condition is true or when indicated by the encoder. The anchor position may be derived identically or similarly to how an anchor position for motion vector derivation is derived in various embodiments. [00165] In some embodiments, when the collocated picture for TMVP is indicated to be the current picture, the motion vector anchor position is applied to find the collocated block, that is, the collocated block is selected on the basis of (tile_x + rel_x, tile_y + rel_y), where tile x and tile y may be obtained through the reference tile id. The reference tile id may be indicated as described above for tile identifier based motion vector anchor positions. Alternatively, a reference tile id may be conditionally provided, e.g., in a slice header when the collocated picture is indicated to be the current picture. [00166] HEVC slice header syntax comprises first_slice_segment_in_pic_flag. When equal to 1, it specifies that the slice segment is the first slice segment of a picture in decoding order. first_slice_segment_in_pic_flag equal to 0 specifies that the slice segment is not the first slice segment of a picture in decoding order. This syntax element may be used for detection of the