libavcodec/motion_est_template.c:948: error: Uninitialized Value
  The value read from ymin was never initialized.

libavcodec/motion_est_template.c:948:13: 
946. 
947. //check(x - dia_size + dir, y + dir,0, a3)
948.             CHECK_MV(x - dia_size + dir, y + dir           );
                 ^
949.         }
950. 
