diff --git a/libmpcodecs/ad_liba52.c b/libmpcodecs/ad_liba52.c
index abd6a7ac54..9cea6a0016 100644
--- a/libmpcodecs/ad_liba52.c
+++ b/libmpcodecs/ad_liba52.c
@@ -134,6 +134,7 @@ int channels=0;
 static sample_t dynrng_call (sample_t c, void *data)
 {
     struct MPOpts *opts = data;
+    //fprintf(stderr, "(%f, %f): %f\n", (double)c, (double)drc_level, (double)pow((double)c, drc_level));
     //fprintf(stderr, "(%lf, %lf): %lf\n", (double)c, opts->drc_level, pow(c, opts->drc_level));
     return pow(c, opts->drc_level);
 }
diff --git a/libvo/font_load_ft.c b/libvo/font_load_ft.c
index 1cd6fb5733..3ba90bd5da 100644
--- a/libvo/font_load_ft.c
+++ b/libvo/font_load_ft.c
@@ -201,8 +201,8 @@ static int check_font(font_desc_t *desc, float ppem, int padding, int pic_idx,
 	}
 	desc->glyph_index[unicode?character:code] = glyph_index;
     }
-//    fprintf(stderr, "font height: %lf\n", (double)(face->bbox.yMax-face->bbox.yMin)/(double)face->units_per_EM*ppem);
-//    fprintf(stderr, "font width: %lf\n", (double)(face->bbox.xMax-face->bbox.xMin)/(double)face->units_per_EM*ppem);
+//    fprintf(stderr, "font height: %f\n", (double)(face->bbox.yMax-face->bbox.yMin)/(double)face->units_per_EM*ppem);
+//    fprintf(stderr, "font width: %f\n", (double)(face->bbox.xMax-face->bbox.xMin)/(double)face->units_per_EM*ppem);
 
     ymax = (double)(face->bbox.yMax)/(double)face->units_per_EM*ppem+1;
     ymin = (double)(face->bbox.yMin)/(double)face->units_per_EM*ppem-1;
@@ -592,13 +592,13 @@ void render_one_glyph(font_desc_t *desc, int c)
 		desc->tables.omt, desc->tables.o_r, desc->tables.o_w,
 		desc->tables.o_size);
     }
-//    fprintf(stderr, "fg: outline t = %lf\n", GetTimer()-t);
+//    fprintf(stderr, "fg: outline t = %f\n", GetTimer()-t);
 
     if (desc->tables.g_r) {
 	blur(abuffer+off, desc->tables.tmp, width, height, stride,
 	     desc->tables.gt2, desc->tables.g_r,
 	     desc->tables.g_w);
-//	fprintf(stderr, "fg: blur t = %lf\n", GetTimer()-t);
+//	fprintf(stderr, "fg: blur t = %f\n", GetTimer()-t);
     }
 
     resample_alpha(abuffer+off, bbuffer+off, width, height, stride, font_factor);
@@ -637,9 +637,9 @@ static int prepare_font(font_desc_t *desc, FT_Face face, float ppem, int pic_idx
 //    ttime = GetTimer();
     err = check_font(desc, ppem, padding, pic_idx, charset_size, charset, charcodes, unicode);
 //    ttime=GetTimer()-ttime;
-//    printf("render:   %7lf us\n",ttime);
+//    printf("render:   %7f us\n",ttime);
     if (err) return -1;
-//    fprintf(stderr, "fg: render t = %lf\n", GetTimer()-t);
+//    fprintf(stderr, "fg: render t = %f\n", GetTimer()-t);
 
     desc->pic_a[pic_idx]->w = desc->pic_b[pic_idx]->w;
     desc->pic_a[pic_idx]->h = desc->pic_b[pic_idx]->h;
@@ -1023,7 +1023,7 @@ font_desc_t* read_font_desc_ft(const char *fname, int face_index, int movie_widt
     goto err_out;
 #endif
 
-//    fprintf(stderr, "fg: prepare t = %lf\n", GetTimer()-t);
+//    fprintf(stderr, "fg: prepare t = %f\n", GetTimer()-t);
 
     err = prepare_font(desc, face, subtitle_font_ppem, desc->face_cnt-1,
 		       charset_size, my_charset, my_charcodes, unicode,
diff --git a/loader/win32.c b/loader/win32.c
index cd2063dd9c..1f717c9020 100644
--- a/loader/win32.c
+++ b/loader/win32.c
@@ -4553,7 +4553,7 @@ static double exp_CIpow(void)
 {
     FPU_DOUBLES(x,y);
 
-    dbgprintf("_CIpow(%lf, %lf)\n", x, y);
+    dbgprintf("_CIpow(%f, %f)\n", x, y);
     return pow(x, y);
 }
 
@@ -5008,7 +5008,7 @@ static const char * WINAPI expPathFindFileNameA(const char *path) {
 
 static double expfloor(double x)
 {
-    dbgprintf("floor(%lf)\n", x);
+    dbgprintf("floor(%f)\n", x);
     return floor(x);
 }
 
@@ -5019,7 +5019,7 @@ static double exp_CIcos(void)
 {
     FPU_DOUBLE(x);
 
-    dbgprintf("_CIcos(%lf)\n", x);
+    dbgprintf("_CIcos(%f)\n", x);
     return cos(x);
 }
 
@@ -5027,7 +5027,7 @@ static double exp_CIsin(void)
 {
     FPU_DOUBLE(x);
 
-    dbgprintf("_CIsin(%lf)\n", x);
+    dbgprintf("_CIsin(%f)\n", x);
     return sin(x);
 }
 
@@ -5035,7 +5035,7 @@ static double exp_CIsqrt(void)
 {
     FPU_DOUBLE(x);
 
-    dbgprintf("_CIsqrt(%lf)\n", x);
+    dbgprintf("_CIsqrt(%f)\n", x);
     return sqrt(x);
 }
 
diff --git a/stream/tvi_v4l.c b/stream/tvi_v4l.c
index 74098f8cae..d380a3684e 100644
--- a/stream/tvi_v4l.c
+++ b/stream/tvi_v4l.c
@@ -1702,7 +1702,7 @@ static void *video_grabber(void *data)
                 priv->video_interval_sum += orig_interval-prev_interval;
                 if (priv->video_avg_ptr >= VIDEO_AVG_BUFFER_SIZE) priv->video_avg_ptr = 0;
 
-//              fprintf(stderr, "fps: %lf\n", (double)1e6*VIDEO_AVG_BUFFER_SIZE/priv->video_interval_sum);
+//              fprintf(stderr, "fps: %f\n", (double)1e6*VIDEO_AVG_BUFFER_SIZE/priv->video_interval_sum);
 
                 // interpolate the skew in time
                 pthread_mutex_lock(&priv->skew_mutex);
diff --git a/stream/tvi_v4l2.c b/stream/tvi_v4l2.c
index 7f528d65e5..f5cc9d0897 100644
--- a/stream/tvi_v4l2.c
+++ b/stream/tvi_v4l2.c
@@ -1693,7 +1693,7 @@ static void *video_grabber(void *data)
             if (!priv->tv_param->noaudio) pthread_mutex_unlock(&priv->skew_mutex);
         }
         priv->curr_frame = (long long)buf.timestamp.tv_sec*1e6+buf.timestamp.tv_usec;
-//        fprintf(stderr, "idx = %d, ts = %lf\n", buf.index, (double)(priv->curr_frame) / 1e6);
+//        fprintf(stderr, "idx = %d, ts = %f\n", buf.index, (double)(priv->curr_frame) / 1e6);
 
         interval = priv->curr_frame - priv->first_frame;
         delta = interval - prev_interval;
@@ -1713,7 +1713,7 @@ static void *video_grabber(void *data)
             }
         }
 
-        mp_msg(MSGT_TV, MSGL_DBG3, "\nfps = %lf, interval = %lf, a_skew = %f, corr_skew = %f\n",
+        mp_msg(MSGT_TV, MSGL_DBG3, "\nfps = %f, interval = %f, a_skew = %f, corr_skew = %f\n",
                delta ? (double)1e6/delta : -1,
                (double)1e-6*interval, (double)1e-6*xskew, (double)1e-6*skew);
         mp_msg(MSGT_TV, MSGL_DBG3, "vcnt = %d, acnt = %d\n", priv->video_cnt, priv->audio_cnt);
@@ -1886,7 +1886,7 @@ static void *audio_grabber(void *data)
             priv->audio_start_time = start_time_avg/(priv->audio_recv_blocks_total+1);
         }
 
-//        fprintf(stderr, "spb = %lf, bs = %d, skew = %lf\n", priv->audio_secs_per_block, priv->audio_in.blocksize,
+//        fprintf(stderr, "spb = %f, bs = %d, skew = %f\n", priv->audio_secs_per_block, priv->audio_in.blocksize,
 //                (double)(current_time - 1e6*priv->audio_secs_per_block*priv->audio_recv_blocks_total)/1e6);
 
         // put the current skew into the ring buffer
@@ -1938,7 +1938,7 @@ static void *audio_grabber(void *data)
         priv->audio_skew += priv->audio_start_time - priv->first_frame;
         pthread_mutex_unlock(&priv->skew_mutex);
 
-//        fprintf(stderr, "audio_skew = %lf, delta = %lf\n", (double)priv->audio_skew/1e6, (double)priv->audio_skew_delta_total/1e6);
+//        fprintf(stderr, "audio_skew = %f, delta = %f\n", (double)priv->audio_skew/1e6, (double)priv->audio_skew_delta_total/1e6);
 
         pthread_mutex_lock(&priv->audio_mutex);
         if ((priv->audio_tail+1) % priv->audio_buffer_size == priv->audio_head) {