libavcodec/motion_est_template.c:868: error: Uninitialized Value
  The value read from xmin was never initialized.

libavcodec/motion_est_template.c:868:28: 
866.         if(minima[i].checked) continue;
867. 
868.         if(   x >= xmax || x <= xmin
                                ^
869.            || y >= ymax || y <= ymin)
870.            continue;
