libavcodec/motion_est_template.c:930: error: Uninitialized Value
  The value read from ymin was never initialized.

libavcodec/motion_est_template.c:930:13: 
928. 
929. //check(x + dia_size - dir, y - dir,0, a1)
930.             CHECK_MV(x + dia_size - dir, y - dir           );
                 ^
931.         }
932. 
