libavcodec/motion_est_template.c:843: error: Uninitialized Value
  The value read from ymin was never initialized.

libavcodec/motion_est_template.c:843:37: 
841.         // all entries in map should be in range except if the mv overflows their ME_MAP_MV_BITS bits space
842.         if(   minima[j].x > xmax || minima[j].x < xmin
843.            || minima[j].y > ymax || minima[j].y < ymin)
                                         ^
844.             continue;
845. 
