diff --git a/flv.go b/flv.go
index 3637306..05c24fd 100644
--- a/flv.go
+++ b/flv.go
@@ -4,6 +4,7 @@ import (
 	"time"
 	"fmt"
 	"github.com/nareix/av"
+	"github.com/nareix/av/avutil"
 	"github.com/nareix/codec/h264parser"
 	"github.com/nareix/codec/aacparser"
 	"github.com/nareix/pio"
@@ -109,6 +110,10 @@ func (self *Muxer) WritePacket(pkt av.Packet) (err error) {
 	return
 }
 
+func (self *Muxer) WriteTrailer() (err error) {
+	return
+}
+
 type flvStream struct {
 	av.CodecData
 	lastts int32
@@ -269,3 +274,16 @@ func (self *Demuxer) ReadPacket() (pkt av.Packet, err error) {
 	return
 }
 
+func Handler(h *avutil.RegisterHandler) {
+	h.Probe = func(b []byte) bool {
+		return b[0] == 'F' && b[1] == 'L' && b[2] == 'V'
+	}
+	h.Ext = ".flv"
+	h.ReaderDemuxer = func(r io.Reader) av.Demuxer {
+		return NewDemuxer(r)
+	}
+	h.WriterMuxer = func(w io.Writer) av.Muxer {
+		return NewMuxer(w)
+	}
+}
+
diff --git a/flvio/flvio.go b/flvio/flvio.go
index 60a06e8..5152942 100644
--- a/flvio/flvio.go
+++ b/flvio/flvio.go
@@ -456,3 +456,4 @@ func WriteFileHeader(w *pio.Writer, flags uint8) (err error) {
 	return
 }
 
+