libavcodec/motion_est_template.c:925: error: Uninitialized Value
  The value read from ymin was never initialized.

libavcodec/motion_est_template.c:925:16: 
923. 
924.         start= FFMAX(0, x + dia_size - xmax);
925.         end  = FFMIN(dia_size, y - ymin + 1);
                    ^
926.         for(dir= start; dir<end; dir++){
927.             int d;
