diff --git a/av.go b/av.go
index 495aecc..299f0fa 100644
--- a/av.go
+++ b/av.go
@@ -1,5 +1,9 @@
 package av
 
+import (
+	"fmt"
+)
+
 type SampleFormat int
 
 const (
@@ -69,6 +73,10 @@ func (self SampleFormat) IsPlanar() bool {
 
 type ChannelLayout uint64
 
+func (self ChannelLayout) String() string {
+	return fmt.Sprintf("%dch", self.Count())
+}
+
 const (
 	CH_FRONT_CENTER = ChannelLayout(1<<iota)
 	CH_FRONT_LEFT