diff -uNrp c/encoder/encoder.c b/encoder/encoder.c
--- c/encoder/encoder.c	2010-03-29 12:07:11 +0300
+++ b/encoder/encoder.c	2010-03-29 12:08:11 +0300
@@ -758,6 +758,9 @@ static int x264_validate_parameters( x26
         if( h->param.i_level_idc < 0 )
         {
             int maxrate_bak = h->param.rc.i_vbv_max_bitrate;
+            int i_save_mv_range = h->param.analyse.i_mv_range;
+            if( h->param.analyse.i_mv_range <= 0 )
+                h->param.analyse.i_mv_range = 32;
             if( h->param.rc.i_rc_method == X264_RC_ABR && h->param.rc.i_vbv_buffer_size <= 0 )
                 h->param.rc.i_vbv_max_bitrate = h->param.rc.i_bitrate * 2;
             h->sps = h->sps_array;
@@ -765,6 +768,7 @@ static int x264_validate_parameters( x26
             do h->param.i_level_idc = l->level_idc;
                 while( l[1].level_idc && x264_validate_levels( h, 0 ) && l++ );
             h->param.rc.i_vbv_max_bitrate = maxrate_bak;
+            h->param.analyse.i_mv_range = i_save_mv_range;
         }
         else
         {