libavcodec/motion_est_template.c:680: error: Uninitialized Value
  The value read from xmin was never initialized.

libavcodec/motion_est_template.c:680:13: 
678.             y= best[1];
679. 
680.             CHECK_CLIPPED_MV(x  -dia_size    , y);
                 ^
681.             CHECK_CLIPPED_MV(x+  dia_size    , y);
682.             CHECK_CLIPPED_MV(x+( dia_size>>1), y+dia_size);
