mpeg1_encode_mb_internal 1002 libavcodec/mpeg12enc.c         mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
mpeg1_encode_mb_internal 1004 libavcodec/mpeg12enc.c         mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);