libavcodec/motion_est_template.c:630: error: Uninitialized Value
  The value read from xmin was never initialized.

libavcodec/motion_est_template.c:630:13: 
628. 
629.             CHECK_MV(x + dir           , y + dia_size - dir);
630.             CHECK_MV(x + dia_size - dir, y - dir           );
                 ^
631.             CHECK_MV(x - dir           , y - dia_size + dir);
632.             CHECK_MV(x - dia_size + dir, y + dir           );
