diff -uNrp a/common/common.c b/common/common.c
--- a/common/common.c	2009-12-05 21:34:24 +0200
+++ b/common/common.c	2009-12-05 22:05:04 +0200
@@ -920,7 +920,7 @@ char *x264_param2string( x264_param_t *p
     if( p->rc.i_rc_method == X264_RC_ABR || p->rc.i_rc_method == X264_RC_CRF )
     {
         if( p->rc.i_rc_method == X264_RC_CRF )
-            s += sprintf( s, " crf=%.1f", p->rc.f_rf_constant );
+            s += sprintf( s, " crf=%.4f", p->rc.f_rf_constant );
         else
             s += sprintf( s, " bitrate=%d ratetol=%.1f",
                           p->rc.i_bitrate, p->rc.f_rate_tolerance );
diff -uNrp a/encoder/encoder.c b/encoder/encoder.c
--- a/encoder/encoder.c	2009-12-05 21:34:24 +0200
+++ b/encoder/encoder.c	2009-12-05 22:05:25 +0200
@@ -919,6 +919,10 @@ x264_t *x264_encoder_open( x264_param_t 
         goto fail;
     }
 
+    char *opts = x264_param2string( &h->param, 0 );
+    x264_log( h, X264_LOG_INFO, "%s\n", opts );
+    x264_free( opts );
+
     h->out.i_nal = 0;
     h->out.i_bitstream = X264_MAX( 1000000, h->param.i_width * h->param.i_height * 4
         * ( h->param.rc.i_rc_method == X264_RC_ABR ? pow( 0.95, h->param.rc.i_qp_min )