libavcodec/motion_est_template.c:725: error: Uninitialized Value
  The value read from xmax was never initialized.

libavcodec/motion_est_template.c:725:5: 
723.     y= best[1];
724.     CHECK_CLIPPED_MV(x+1, y);
725.     CHECK_CLIPPED_MV(x, y+1);
         ^
726.     CHECK_CLIPPED_MV(x-1, y);
727.     CHECK_CLIPPED_MV(x, y-1);
