diff --git a/encoder/libx264/libx264.go b/encoder/libx264/libx264.go
index d5ae136..994e590 100644
--- a/encoder/libx264/libx264.go
+++ b/encoder/libx264/libx264.go
@@ -38,6 +38,10 @@ func Version() string {
 	return x264Version
 }
 
+func Build() int {
+	return int(C.X264_BUILD)
+}
+
 const (
 	LogLevelNone    int = -1
 	LogLevelError   int = 0
diff --git a/encoder/libx264/libx264_test.go b/encoder/libx264/libx264_test.go
index 65c3da1..8439ecb 100644
--- a/encoder/libx264/libx264_test.go
+++ b/encoder/libx264/libx264_test.go
@@ -15,6 +15,10 @@ func TestVersion(t *testing.T) {
 	t.Logf("libx264 version: %s", Version())
 }
 
+func TestBuild(t *testing.T) {
+	t.Logf("libx264 version: %d", Build())
+}
+
 func testEncode(sample testdata.TestSample, t *testing.T) {
 	reader, err := sample.Open(t)
 	if err != nil {