SAB_CHECK_MV      746 libavcodec/motion_est_template.c         SAB_CHECK_MV(x-1, y)
SAB_CHECK_MV      747 libavcodec/motion_est_template.c         SAB_CHECK_MV(x+1, y)
SAB_CHECK_MV      748 libavcodec/motion_est_template.c         SAB_CHECK_MV(x  , y-1)
SAB_CHECK_MV      749 libavcodec/motion_est_template.c         SAB_CHECK_MV(x  , y+1)