MV_BWD_X2         687 libavcodec/cavs.c     h->top_mv[1][h->mbx * 2 + 0] = h->mv[MV_BWD_X2];
MV_BWD_X2         876 libavcodec/cavsdec.c                 ff_cavs_mv(h, MV_BWD_X2, MV_BWD_A1, MV_PRED_LEFT, BLK_16X8, 0);