diff --git a/libvo/Makefile b/libvo/Makefile
index e9dc5d8c79..11475e51b6 100644
--- a/libvo/Makefile
+++ b/libvo/Makefile
@@ -3,7 +3,7 @@ include config.mak
 
 LIBNAME = libvo.a
 
-SRCS=aspect.c aclib.c osd.c font_load.c yuv2rgb.c video_out.c vo_null.c vo_pgm.c vo_md5.c vo_mpegpes.c x11_common.c $(OPTIONAL_SRCS)
+SRCS=aspect.c aclib.c osd.c font_load.c yuv2rgb.c video_out.c vo_null.c vo_pgm.c vo_md5.c vo_mpegpes.c x11_common.c $(OPTIONAL_SRCS) img_format.c
 OBJS=$(SRCS:.c=.o)
 
 ifeq ($(TARGET_ARCH_X86),yes)
diff --git a/libvo/img_format.c b/libvo/img_format.c
new file mode 100644
index 0000000000..f7dbe91f70
--- /dev/null
+++ b/libvo/img_format.c
@@ -0,0 +1,44 @@
+#include "config.h"
+#include "video_out.h"
+
+char *vo_format_name(int format)
+{
+    switch(format)
+    {
+	case IMGFMT_RGB8: return("RGB 8-bit");
+	case IMGFMT_RGB15: return("RGB 15-bit");
+	case IMGFMT_RGB16: return("RGB 16-bit");
+	case IMGFMT_RGB24: return("RGB 24-bit");
+	case IMGFMT_RGB32: return("RGB 32-bit");
+	case IMGFMT_BGR8: return("BGR 8-bit");
+	case IMGFMT_BGR15: return("BGR 15-bit");
+	case IMGFMT_BGR16: return("BGR 16-bit");
+	case IMGFMT_BGR24: return("BGR 24-bit");
+	case IMGFMT_BGR32: return("BGR 32-bit");
+	case IMGFMT_YVU9: return("Planar YVU9");
+	case IMGFMT_IF09: return("Planar IF09");
+	case IMGFMT_YV12: return("Planar YV12");
+	case IMGFMT_I420: return("Planar I420");
+	case IMGFMT_IYUV: return("Planar IYUV");
+	case IMGFMT_CLPL: return("Planar CLPL");
+	case IMGFMT_IYU1: return("Packed IYU1");
+	case IMGFMT_IYU2: return("Packed IYU2");
+	case IMGFMT_UYVY: return("Packed UYVY");
+	case IMGFMT_UYNV: return("Packed UYNV");
+	case IMGFMT_cyuv: return("Packed CYUV");
+	case IMGFMT_YUY2: return("Packed YUY2");
+	case IMGFMT_YUNV: return("Packed YUNV");
+	case IMGFMT_YVYU: return("Packed YVYU");
+	case IMGFMT_Y41P: return("Packed Y41P");
+	case IMGFMT_Y211: return("Packed Y211");
+	case IMGFMT_Y41T: return("Packed Y41T");
+	case IMGFMT_Y42T: return("Packed Y42T");
+	case IMGFMT_V422: return("Packed V422");
+	case IMGFMT_V655: return("Packed V655");
+	case IMGFMT_CLJR: return("Packed CLJR");
+	case IMGFMT_YUVP: return("Packed YUVP");
+	case IMGFMT_UYVP: return("Packed UYVP");
+	case IMGFMT_MPEGPES: return("Mpeg PES");
+    }
+    return("Unknown");
+}
diff --git a/libvo/video_out.c b/libvo/video_out.c
index d19faa77d0..de962440fd 100644
--- a/libvo/video_out.c
+++ b/libvo/video_out.c
@@ -135,45 +135,3 @@ vo_functions_t* video_out_drivers[] =
 };
 
 #include "sub.c"
-
-char *vo_format_name(int format)
-{
-    switch(format)
-    {
-	case IMGFMT_RGB8: return("RGB 8-bit");
-	case IMGFMT_RGB15: return("RGB 15-bit");
-	case IMGFMT_RGB16: return("RGB 16-bit");
-	case IMGFMT_RGB24: return("RGB 24-bit");
-	case IMGFMT_RGB32: return("RGB 32-bit");
-	case IMGFMT_BGR8: return("BGR 8-bit");
-	case IMGFMT_BGR15: return("BGR 15-bit");
-	case IMGFMT_BGR16: return("BGR 16-bit");
-	case IMGFMT_BGR24: return("BGR 24-bit");
-	case IMGFMT_BGR32: return("BGR 32-bit");
-	case IMGFMT_YVU9: return("Planar YVU9");
-	case IMGFMT_IF09: return("Planar IF09");
-	case IMGFMT_YV12: return("Planar YV12");
-	case IMGFMT_I420: return("Planar I420");
-	case IMGFMT_IYUV: return("Planar IYUV");
-	case IMGFMT_CLPL: return("Planar CLPL");
-	case IMGFMT_IYU1: return("Packed IYU1");
-	case IMGFMT_IYU2: return("Packed IYU2");
-	case IMGFMT_UYVY: return("Packed UYVY");
-	case IMGFMT_UYNV: return("Packed UYNV");
-	case IMGFMT_cyuv: return("Packed CYUV");
-	case IMGFMT_YUY2: return("Packed YUY2");
-	case IMGFMT_YUNV: return("Packed YUNV");
-	case IMGFMT_YVYU: return("Packed YVYU");
-	case IMGFMT_Y41P: return("Packed Y41P");
-	case IMGFMT_Y211: return("Packed Y211");
-	case IMGFMT_Y41T: return("Packed Y41T");
-	case IMGFMT_Y42T: return("Packed Y42T");
-	case IMGFMT_V422: return("Packed V422");
-	case IMGFMT_V655: return("Packed V655");
-	case IMGFMT_CLJR: return("Packed CLJR");
-	case IMGFMT_YUVP: return("Packed YUVP");
-	case IMGFMT_UYVP: return("Packed UYVP");
-	case IMGFMT_MPEGPES: return("Mpeg PES");
-    }
-    return("Unknown");
-}