diff --git a/rtmp/rtmp_server_test.go b/rtmp/rtmp_server_test.go
index f3b7ab4..535dd61 100644
--- a/rtmp/rtmp_server_test.go
+++ b/rtmp/rtmp_server_test.go
@@ -1,6 +1,7 @@
 package rtmp
 
 import (
+	"github.com/yangjiechina/avformat/librtmp"
 	"github.com/yangjiechina/avformat/utils"
 	"github.com/yangjiechina/live-server/stream"
 	"net"
@@ -9,7 +10,7 @@ import (
 
 func CreateTransStream(protocol stream.Protocol, streams []utils.AVStream) stream.ITransStream {
 	if stream.ProtocolRtmp == protocol {
-		return &TransStream{}
+		return NewTransStream(librtmp.ChunkSize)
 	}
 
 	return nil
diff --git a/rtmp/rtmp_transtream.go b/rtmp/rtmp_transtream.go
index c5120f0..ef98d0c 100644
--- a/rtmp/rtmp_transtream.go
+++ b/rtmp/rtmp_transtream.go
@@ -26,24 +26,30 @@ func (t *TransStream) Input(packet utils.AVPacket) {
 	var data []byte
 	var chunk *librtmp.Chunk
 	var videoPkt bool
+	var length int
+	//rtmp chunk消息体的数据大小
+	var payloadSize int
 
 	if utils.AVMediaTypeAudio == packet.MediaType() {
 		data = packet.Data()
+		length = len(data)
 		chunk = &t.audioChunk
+		payloadSize += 2 + length
 	} else if utils.AVMediaTypeVideo == packet.MediaType() {
+		if packet.KeyFrame() {
+			println("")
+		}
 		videoPkt = true
 		data = packet.AVCCPacketData()
+		length = len(data)
 		chunk = &t.videoChunk
+		payloadSize += 5 + length
 	}
 
-	length := len(data)
-	//rtmp chunk消息体的数据大小
-	payloadSize := 5 + length
-	payloadSize += payloadSize / t.chunkSize
-
+	//payloadSize += payloadSize / t.chunkSize
 	//分配内存
 	t.memoryPool.Mark()
-	allocate := t.memoryPool.Allocate(12 + payloadSize)
+	allocate := t.memoryPool.Allocate(12 + payloadSize + (payloadSize / t.chunkSize))
 
 	//写chunk头
 	chunk.Length = payloadSize
@@ -54,13 +60,21 @@ func (t *TransStream) Input(packet utils.AVPacket) {
 	//写flv
 	ct := packet.Pts() - packet.Dts()
 	if videoPkt {
-		n += t.muxer.WriteVideoData(allocate, uint32(ct), packet.KeyFrame(), false)
+		n += t.muxer.WriteVideoData(allocate[12:], uint32(ct), packet.KeyFrame(), false)
 	} else {
-		n += t.muxer.WriteAudioData(allocate, false)
+		n += t.muxer.WriteAudioData(allocate[12:], false)
 	}
 
+	first := true
+	var min int
 	for length > 0 {
-		min := utils.MinInt(length, t.chunkSize)
+		if first {
+			min = utils.MinInt(length, t.chunkSize-5)
+			first = false
+		} else {
+			min = utils.MinInt(length, t.chunkSize)
+		}
+
 		copy(allocate[n:], data[:min])
 		n += min
 
@@ -78,8 +92,9 @@ func (t *TransStream) Input(packet utils.AVPacket) {
 		}
 	}
 
-	rtmpData := t.memoryPool.Fetch()
-	ret := t.transBuffer.AddPacket(rtmpData, packet.KeyFrame() && utils.AVMediaTypeVideo == packet.MediaType(), packet.Dts())
+	rtmpData := t.memoryPool.Fetch()[:n]
+	ret := t.transBuffer.AddPacket(rtmpData, packet.KeyFrame() && videoPkt, packet.Dts())
+
 	if ret {
 		//发送给sink
 
@@ -88,18 +103,21 @@ func (t *TransStream) Input(packet utils.AVPacket) {
 		}
 	}
 
+	t.memoryPool.FreeTail()
 }
 
 func (t *TransStream) AddSink(sink stream.ISink) {
 	t.TransStreamImpl.AddSink(sink)
 
+	utils.Assert(t.headerSize > 0)
+	sink.Input(t.header[:t.headerSize])
+
 	t.transBuffer.Peek(func(packet interface{}) {
 		sink.Input(packet.([]byte))
 	})
 }
 
 func (t *TransStream) onDiscardPacket(pkt interface{}) {
-	//bytes := pkt.([]byte)
 	t.memoryPool.FreeHead()
 }
 
@@ -117,7 +135,7 @@ func (t *TransStream) WriteHeader() error {
 			audioStream = track
 			audioCodecId = audioStream.CodecId()
 			t.audioChunk = librtmp.NewAudioChunk()
-		} else if utils.AVMediaTypeAudio == track.Type() {
+		} else if utils.AVMediaTypeVideo == track.Type() {
 			videoStream = track
 			videoCodecId = videoStream.CodecId()
 			t.videoChunk = librtmp.NewVideoChunk()
@@ -127,6 +145,7 @@ func (t *TransStream) WriteHeader() error {
 	utils.Assert(audioStream != nil || videoStream != nil)
 
 	//初始化
+	t.TransStreamImpl.Completed = true
 	t.header = make([]byte, 1024)
 	t.muxer = libflv.NewMuxer(audioCodecId, videoCodecId, 0, 0, 0)
 	t.memoryPool = stream.NewMemoryPool(1024 * 1024 * 2)
@@ -135,17 +154,26 @@ func (t *TransStream) WriteHeader() error {
 
 	var n int
 	if audioStream != nil {
-		n += t.muxer.WriteAudioData(t.header, true)
+		n += t.muxer.WriteAudioData(t.header[12:], true)
 		extra := audioStream.Extra()
-		copy(t.header[n:], extra)
+		copy(t.header[n+12:], extra)
 		n += len(extra)
+
+		t.audioChunk.Length = n
+		t.audioChunk.ToBytes(t.header)
+		n += 12
 	}
 
 	if videoStream != nil {
-		n += t.muxer.WriteAudioData(t.header[n:], true)
+		tmp := n
+		n += t.muxer.WriteVideoData(t.header[n+12:], 0, false, true)
 		extra := videoStream.Extra()
-		copy(t.header[n:], extra)
+		copy(t.header[n+12:], extra)
 		n += len(extra)
+
+		t.videoChunk.Length = 5 + len(extra)
+		t.videoChunk.ToBytes(t.header[tmp:])
+		n += 12
 	}
 
 	t.headerSize = n
@@ -153,6 +181,6 @@ func (t *TransStream) WriteHeader() error {
 }
 
 func NewTransStream(chunkSize int) stream.ITransStream {
-	transStream := &TransStream{chunkSize: chunkSize}
+	transStream := &TransStream{chunkSize: chunkSize, TransStreamImpl: stream.TransStreamImpl{Sinks: make(map[stream.SinkId]stream.ISink, 64)}}
 	return transStream
 }
diff --git a/stream/ring_buffer.go b/stream/ring_buffer.go
index fe9c3ba..ed25146 100644
--- a/stream/ring_buffer.go
+++ b/stream/ring_buffer.go
@@ -82,6 +82,10 @@ func (r *ringBuffer) Size() int {
 }
 
 func (r *ringBuffer) All() ([]interface{}, []interface{}) {
+	if r.size == 0 {
+		return nil, nil
+	}
+
 	if r.head < r.tail {
 		return r.data[r.head:], r.data[:r.tail]
 	} else {