EA_PREAMBLE_SIZE  153 libavcodec/eacmv.c         cmv_process_header(s, buf+EA_PREAMBLE_SIZE, buf_end);
EA_PREAMBLE_SIZE  175 libavcodec/eacmv.c     buf += EA_PREAMBLE_SIZE;
EA_PREAMBLE_SIZE  247 libavcodec/eatgv.c     buf += EA_PREAMBLE_SIZE;