libavcodec/mpegvideo_enc.c:2405: error: Uninitialized Value
  The value read from best_s.mv_dir was never initialized.

libavcodec/mpegvideo_enc.c:2405:52: 
2403.                         int mx,my;
2404.                         memcpy(s->mv, best_s.mv, sizeof(s->mv));
2405.                         if(ENABLE_MPEG4_ENCODER && best_s.mv_dir & MV_DIRECT){
                                                         ^
2406.                             mx=my=0; //FIXME find the one we actually used
2407.                             ff_mpeg4_set_direct_mv(s, mx, my);
