A method of block vector (BV) prediction for an IntraBC mode (Intra-block copy mode) coded
block in a video coding system according to the present invention is disclosed. Multiple BV
candidate lists are derived from neighboring blocks of the current block. A BV candidate list
is selected as a BV predictor for the BV of the current block. The current block is coded
based on an Intra reference block located according to the BV of the current block. In one
embodiment, a left-bottom (LB) block of the current block is used to derive the first BV …