diff --git a/main.go b/main.go
index 68e2059..ea1d02d 100644
--- a/main.go
+++ b/main.go
@@ -93,11 +93,11 @@ func (sub *HDLSubscriber) OnEvent(event any) {
 }
 
 func (sub *HDLSubscriber) WriteFlvHeader() {
-	at, vt := sub.Audio.Track, sub.Video.Track
+	at, vt := sub.Audio, sub.Video
 	hasAudio, hasVideo := at != nil, vt != nil
-	var amf codec.AMF
+	var amf util.AMF
 	amf.Marshal("onMetaData")
-	metaData := codec.EcmaArray{
+	metaData := util.EcmaArray{
 		"MetaDataCreator": "m7s" + Engine.Version,
 		"hasVideo":        hasVideo,
 		"hasAudio":        hasAudio,
@@ -126,7 +126,7 @@ func (sub *HDLSubscriber) WriteFlvHeader() {
 	amf.Marshal(metaData)
 	// 写入FLV头
 	sub.Write([]byte{'F', 'L', 'V', 0x01, flags, 0, 0, 0, 9, 0, 0, 0, 0})
-	codec.WriteFLVTag(sub, codec.FLV_TAG_TYPE_SCRIPT, 0, net.Buffers{amf.Buffer})
+	codec.WriteFLVTag(sub, codec.FLV_TAG_TYPE_SCRIPT, 0, amf.Buffer)
 }
 
 func (c *HDLConfig) ServeHTTP(w http.ResponseWriter, r *http.Request) {
diff --git a/pull.go b/pull.go
index 29c929f..f8d0ee8 100644
--- a/pull.go
+++ b/pull.go
@@ -17,11 +17,13 @@ type HDLPuller struct {
 	Puller
 	absTS uint32 //绝对时间戳
 	buf   util.Buffer
+	pool  util.BytesPool
 }
 
 func NewHDLPuller() *HDLPuller {
 	return &HDLPuller{
-		buf: util.Buffer(make([]byte, len(codec.FLVHeader))),
+		buf:  util.Buffer(make([]byte, len(codec.FLVHeader))),
+		pool: make(util.BytesPool, 17),
 	}
 }
 
@@ -71,8 +73,10 @@ func (puller *HDLPuller) Pull() (err error) {
 			startTs = timestamp
 		}
 		tmp.ReadUint24()
-		payload := make([]byte, dataSize)
-		_, err = io.ReadFull(puller, payload)
+		var frame util.BLL
+		mem := puller.pool.Get(int(dataSize))
+		frame.Push(mem)
+		_, err = io.ReadFull(puller, mem.Value)
 		if err != nil {
 			return
 		}
@@ -80,9 +84,9 @@ func (puller *HDLPuller) Pull() (err error) {
 		// println(t, puller.absTS)
 		switch t {
 		case codec.FLV_TAG_TYPE_AUDIO:
-			puller.WriteAVCCAudio(puller.absTS, payload)
+			puller.WriteAVCCAudio(puller.absTS, frame)
 		case codec.FLV_TAG_TYPE_VIDEO:
-			puller.WriteAVCCVideo(puller.absTS, payload)
+			puller.WriteAVCCVideo(puller.absTS, frame)
 		}
 	}
 	return