libavcodec/motion_est_template.c:312: error: Uninitialized Value
  The value read from ymin was never initialized.

libavcodec/motion_est_template.c:312:9: 
310. 
311.     if (mx > xmin && mx < xmax &&
312.         my > ymin && my < ymax) {
             ^
313.         int bx=4*mx, by=4*my;
314.         int d= dmin;
