diff -up src/blend_test.c.png14 src/blend_test.c
--- src/blend_test.c.png14	2010-01-27 22:28:03.520702943 -0200
+++ src/blend_test.c	2010-01-27 22:28:25.287743724 -0200
@@ -179,7 +179,7 @@ static gavl_video_frame_t * read_png(con
     {
     case PNG_COLOR_TYPE_GRAY:       /*  (bit depths 1, 2, 4, 8, 16) */
       if(bit_depth < 8)
-        png_set_gray_1_2_4_to_8(png_ptr);
+        png_set_expand_gray_1_2_4_to_8(png_ptr);
       if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
         {
         png_set_tRNS_to_alpha(png_ptr);
diff -up src/pngutil.c.png14 src/pngutil.c
--- src/pngutil.c.png14	2010-01-27 22:28:46.413703815 -0200
+++ src/pngutil.c	2010-01-27 22:28:59.380703073 -0200
@@ -173,7 +173,7 @@ gavl_video_frame_t * read_png(const char
     {
     case PNG_COLOR_TYPE_GRAY:       /*  (bit depths 1, 2, 4, 8, 16) */
       if(bit_depth < 8)
-        png_set_gray_1_2_4_to_8(png_ptr);
+        png_set_expand_gray_1_2_4_to_8(png_ptr);
       if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
         {
         png_set_tRNS_to_alpha(png_ptr);
diff -up src/scaletest.c.png14 src/scaletest.c
--- src/scaletest.c.png14	2010-01-27 22:29:19.249739376 -0200
+++ src/scaletest.c	2010-01-27 22:29:28.199706880 -0200
@@ -210,7 +210,7 @@ static gavl_video_frame_t * read_png(con
     {
     case PNG_COLOR_TYPE_GRAY:       /*  (bit depths 1, 2, 4, 8, 16) */
       if(bit_depth < 8)
-        png_set_gray_1_2_4_to_8(png_ptr);
+        png_set_expand_gray_1_2_4_to_8(png_ptr);
       if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
         {
         png_set_tRNS_to_alpha(png_ptr);