libavcodec/motion_est_template.c:621: error: Uninitialized Value
  The value read from xmin was never initialized.

libavcodec/motion_est_template.c:621:15: 
619. 
620.         if(   x + dia_size > xmax
621.            || x - dia_size < xmin
                   ^
622.            || y + dia_size > ymax
623.            || y - dia_size < ymin)
