diff --git a/Android.bp b/Android.bp
index ea76f9435..73b77a326 100644
--- a/Android.bp
+++ b/Android.bp
@@ -105,6 +105,15 @@ cc_test {
     static_libs: ["libyuv"],
 }
 
+cc_test {
+    name: "i444tonv12_eg",
+    gtest: false,
+    srcs: [
+        "util/i444tonv12_eg.cc",
+    ],
+    static_libs: ["libyuv"],
+}
+
 cc_test {
     name: "cpuid",
     gtest: false,
diff --git a/Android.mk b/Android.mk
index 0975d64a3..08f990af6 100644
--- a/Android.mk
+++ b/Android.mk
@@ -11,41 +11,45 @@ LOCAL_SRC_FILES := \
     source/compare_gcc.cc       \
     source/compare_mmi.cc       \
     source/compare_msa.cc       \
-    source/compare_neon.cc      \
     source/compare_neon64.cc    \
-    source/convert.cc           \
+    source/compare_neon.cc      \
+    source/compare_win.cc       \
     source/convert_argb.cc      \
-    source/convert_from.cc      \
+    source/convert.cc           \
     source/convert_from_argb.cc \
+    source/convert_from.cc      \
     source/convert_to_argb.cc   \
     source/convert_to_i420.cc   \
     source/cpu_id.cc            \
     source/planar_functions.cc  \
-    source/rotate.cc            \
     source/rotate_any.cc        \
     source/rotate_argb.cc       \
+    source/rotate.cc            \
     source/rotate_common.cc     \
     source/rotate_gcc.cc        \
     source/rotate_mmi.cc        \
     source/rotate_msa.cc        \
-    source/rotate_neon.cc       \
     source/rotate_neon64.cc     \
+    source/rotate_neon.cc       \
+    source/rotate_win.cc        \
     source/row_any.cc           \
     source/row_common.cc        \
     source/row_gcc.cc           \
     source/row_mmi.cc           \
     source/row_msa.cc           \
-    source/row_neon.cc          \
     source/row_neon64.cc        \
-    source/scale.cc             \
+    source/row_neon.cc          \
+    source/row_win.cc           \
     source/scale_any.cc         \
     source/scale_argb.cc        \
+    source/scale.cc             \
     source/scale_common.cc      \
     source/scale_gcc.cc         \
     source/scale_mmi.cc         \
     source/scale_msa.cc         \
-    source/scale_neon.cc        \
     source/scale_neon64.cc      \
+    source/scale_neon.cc        \
+    source/scale_win.cc         \
     source/video_common.cc
 
 common_CFLAGS := -Wall -fexceptions
diff --git a/BUILD.gn b/BUILD.gn
index a731844e1..aedf25bda 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -39,6 +39,7 @@ group("default") {
     deps += [
       ":compare",
       ":cpuid",
+      ":i444tonv12_eg",
       ":libyuv_unittest",
       ":psnr",
       ":yuvconvert",
@@ -389,6 +390,16 @@ if (libyuv_include_tests) {
     }
   }
 
+  executable("i444tonv12_eg") {
+    sources = [
+      # sources
+      "util/i444tonv12_eg.cc",
+    ]
+    deps = [
+      ":libyuv",
+    ]
+  }
+
   executable("cpuid") {
     sources = [
       # sources
diff --git a/linux.mk b/linux.mk
index e9a26a79b..6b07c5060 100644
--- a/linux.mk
+++ b/linux.mk
@@ -65,7 +65,7 @@ LOCAL_OBJ_FILES := \
 .c.o:
 	$(CC) -c $(CFLAGS) $*.c -o $*.o
 
-all: libyuv.a yuvconvert cpuid psnr
+all: libyuv.a i444tonv12_eg yuvconvert cpuid psnr
 
 libyuv.a: $(LOCAL_OBJ_FILES)
 	$(AR) $(ARFLAGS) $@ $(LOCAL_OBJ_FILES)
@@ -78,6 +78,10 @@ yuvconvert: util/yuvconvert.cc libyuv.a
 psnr: util/psnr.cc
 	$(CXX) $(CXXFLAGS) -Iutil/ -o $@ util/psnr.cc util/psnr_main.cc util/ssim.cc
 
+# A simple conversion example.
+i444tonv12_eg: util/i444tonv12_eg.cc libyuv.a
+	$(CC) $(CFLAGS) -o $@ util/i444tonv12_eg.cc libyuv.a
+
 # A C test utility that uses libyuv conversion from C.
 # gcc 4.4 and older require -fno-exceptions to avoid link error on __gxx_personality_v0
 # CC=gcc-4.4 CXXFLAGS=-fno-exceptions CXX=g++-4.4 make -f linux.mk
@@ -85,4 +89,4 @@ cpuid: util/cpuid.c libyuv.a
 	$(CC) $(CFLAGS) -o $@ util/cpuid.c libyuv.a
 
 clean:
-	/bin/rm -f source/*.o *.ii *.s libyuv.a yuvconvert cpuid psnr
+	/bin/rm -f source/*.o *.ii *.s libyuv.a i444tonv12_eg yuvconvert cpuid psnr
diff --git a/util/i444tonv12_eg.cc b/util/i444tonv12_eg.cc
new file mode 100644
index 000000000..0fcb4095a
--- /dev/null
+++ b/util/i444tonv12_eg.cc
@@ -0,0 +1,28 @@
+
+#include "libyuv/convert.h"
+
+#include <stdio.h>   // for printf
+#include <string.h>  // for memset
+
+int main(int, char**) {
+  unsigned char src_i444[640 * 400 * 3];
+  unsigned char dst_nv12[640 * 400 * 3 / 2];
+
+  for (size_t i = 0; i < sizeof(src_i444); ++i) {
+    src_i444[i] = i & 255;
+  }
+  memset(dst_nv12, 0, sizeof(dst_nv12));
+  libyuv::I444ToNV12(&src_i444[0], 640,              // source Y
+                     &src_i444[640 * 400], 640,      // source U
+                     &src_i444[640 * 400 * 2], 640,  // source V
+                     &dst_nv12[0], 640,              // dest Y
+                     &dst_nv12[640 * 400], 640,      // dest UV
+                     640, 400);                      // width and height
+
+  int checksum = 0;
+  for (size_t i = 0; i < sizeof(dst_nv12); ++i) {
+    checksum += dst_nv12[i];
+  }
+  printf("checksum %x %s\n", checksum, checksum == 0x2ec0c00 ? "PASS" : "FAIL");
+  return 0;
+}
\ No newline at end of file