diff --git a/config.go b/config.go
index 571501e..b9b87d3 100644
--- a/config.go
+++ b/config.go
@@ -8,6 +8,7 @@ import (
 	"path/filepath"
 	"regexp"
 	"strings"
+	"time"
 
 	"m7s.live/engine/v4"
 )
@@ -29,7 +30,7 @@ type Record struct {
 	Path          string //存储文件的目录
 	AutoRecord    bool
 	Filter        string
-	Fragment      int //分片大小（秒）0表示不分片
+	Fragment      time.Duration //分片大小（秒）0表示不分片
 	filterReg     *regexp.Regexp
 	fs            http.Handler
 	CreateFileFn  func(filename string, append bool) (FileWr, error) `yaml:"-" json:"-"`
diff --git a/default.yaml b/default.yaml
index 785acb9..050cd17 100644
--- a/default.yaml
+++ b/default.yaml
@@ -1,2 +1,2 @@
 subscribe:
-  livemode: false
\ No newline at end of file
+  submode: 1
\ No newline at end of file
diff --git a/flv.go b/flv.go
index eb859c5..d0673d6 100644
--- a/flv.go
+++ b/flv.go
@@ -2,7 +2,6 @@ package record
 
 import (
 	"io"
-	"net"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -11,6 +10,7 @@ import (
 	"go.uber.org/zap"
 	. "m7s.live/engine/v4"
 	"m7s.live/engine/v4/codec"
+	"m7s.live/engine/v4/util"
 )
 
 type FLVRecorder struct {
@@ -43,10 +43,10 @@ func (r *FLVRecorder) start() {
 
 func (r *FLVRecorder) writeMetaData(file *os.File, duration int64) {
 	defer file.Close()
-	at, vt := r.Audio.Track, r.Video.Track
+	at, vt := r.Audio, r.Video
 	hasAudio, hasVideo := at != nil, vt != nil
-	var amf codec.AMF
-	metaData := codec.EcmaArray{
+	var amf util.AMF
+	metaData := util.EcmaArray{
 		"MetaDataCreator": "m7s " + Engine.Version,
 		"hasVideo":        hasVideo,
 		"hasAudio":        hasAudio,
@@ -99,7 +99,7 @@ func (r *FLVRecorder) writeMetaData(file *os.File, duration int64) {
 	} else {
 		tempFile.Write([]byte{'F', 'L', 'V', 0x01, flags, 0, 0, 0, 9, 0, 0, 0, 0})
 		amf.Reset()
-		codec.WriteFLVTag(tempFile, codec.FLV_TAG_TYPE_SCRIPT, 0, net.Buffers{amf.Marshals("onMetaData", metaData)})
+		codec.WriteFLVTag(tempFile, codec.FLV_TAG_TYPE_SCRIPT, 0, amf.Marshals("onMetaData", metaData))
 		file.Seek(int64(len(codec.FLVHeader)), io.SeekStart)
 		io.Copy(tempFile, file)
 		tempFile.Seek(0, io.SeekStart)
@@ -130,18 +130,18 @@ func (r *FLVRecorder) OnEvent(event any) {
 	case FLVFrame:
 		check := false
 		var absTime uint32
-		if r.Video.Track == nil {
+		if r.VideoReader.Track == nil {
 			check = true
-			absTime = r.Audio.Frame.AbsTime
+			absTime = r.AudioReader.Frame.AbsTime
 		} else {
-			check = r.Video.Frame.IFrame
-			absTime = r.Video.Frame.AbsTime
+			check = r.VideoReader.Frame.IFrame
+			absTime = r.VideoReader.Frame.AbsTime
 			if check {
 				r.filepositions = append(r.filepositions, uint64(r.Offset))
 				r.times = append(r.times, float64(absTime)/1000)
 			}
 		}
-		if r.Fragment > 0 && check && r.duration >= int64(r.Fragment*1000) {
+		if r.Fragment > 0 && check && time.Duration(r.duration)*time.Millisecond >= r.Fragment {
 			r.SkipTS = absTime
 			if file, ok := r.Writer.(*os.File); ok {
 				go r.writeMetaData(file, r.duration)
@@ -152,15 +152,15 @@ func (r *FLVRecorder) OnEvent(event any) {
 			if file, err := r.CreateFileFn(filepath.Join(r.Stream.Path, strconv.FormatInt(time.Now().Unix(), 10)+r.Ext), false); err == nil {
 				r.SetIO(file)
 				r.Write(codec.FLVHeader)
-				if r.Video.Track != nil {
-					dcflv := codec.VideoAVCC2FLV(r.Video.Track.DecoderConfiguration.AVCC, 0)
+				if r.VideoReader.Track != nil {
+					dcflv := codec.VideoAVCC2FLV(0, r.VideoReader.Track.SequenceHead)
 					dcflv.WriteTo(r)
 				}
-				if r.Audio.Track != nil && r.Audio.Track.CodecID == codec.CodecID_AAC {
-					dcflv := codec.AudioAVCC2FLV(r.Audio.Track.Value.AVCC, 0)
+				if r.AudioReader.Track != nil && r.Audio.CodecID == codec.CodecID_AAC {
+					dcflv := codec.AudioAVCC2FLV(0, r.AudioReader.Track.Value.AVCC.ToBuffers()...)
 					dcflv.WriteTo(r)
 				}
-				flv := codec.VideoAVCC2FLV(r.Video.Frame.AVCC, 0)
+				flv := codec.VideoAVCC2FLV(0, r.VideoReader.Track.Value.AVCC.ToBuffers()...)
 				flv.WriteTo(r)
 				return
 			}
diff --git a/hls.go b/hls.go
index bf02b0d..12cc3a7 100644
--- a/hls.go
+++ b/hls.go
@@ -2,6 +2,7 @@ package record
 
 import (
 	"io"
+	"math"
 	"path/filepath"
 	"strconv"
 	"time"
@@ -15,7 +16,6 @@ import (
 
 type HLSRecorder struct {
 	playlist           hls.Playlist
-	asc                *codec.AudioSpecificConfig
 	video_cc, audio_cc byte
 	packet             mpegts.MpegTsPESPacket
 	Recorder
@@ -46,7 +46,7 @@ func (h *HLSRecorder) OnEvent(event any) {
 			Writer:         h.Writer,
 			Version:        3,
 			Sequence:       0,
-			Targetduration: h.Fragment * 1000,
+			Targetduration: int(math.Ceil(h.Fragment.Seconds())),
 		}
 		if err = h.playlist.Init(); err != nil {
 			return
@@ -55,10 +55,8 @@ func (h *HLSRecorder) OnEvent(event any) {
 			return
 		}
 		go h.start()
-	case AudioDeConf:
-		h.asc, err = hls.DecodeAudioSpecificConfig(v.AVCC[0])
-	case *AudioFrame:
-		if h.packet, err = hls.AudioPacketToPES(v, h.asc); err != nil {
+	case AudioFrame:
+		if h.packet, err = hls.AudioPacketToPES(&v, &h.Audio.AudioSpecificConfig); err != nil {
 			return
 		}
 		pes := &mpegts.MpegtsPESFrame{
@@ -72,8 +70,8 @@ func (h *HLSRecorder) OnEvent(event any) {
 			return
 		}
 		h.audio_cc = pes.ContinuityCounter
-	case *VideoFrame:
-		h.packet, err = hls.VideoPacketToPES(v, h.Video.Track.DecoderConfiguration, h.SkipTS)
+	case VideoFrame:
+		h.packet, err = hls.VideoPacketToPES(&v, h.Video)
 		if err != nil {
 			return
 		}
@@ -107,7 +105,7 @@ func (h *HLSRecorder) createHlsTsSegmentFile() (err error) {
 	}
 	h.tsWriter = fw
 	inf := hls.PlaylistInf{
-		Duration: float64(h.Fragment),
+		Duration: h.Fragment.Seconds(),
 		Title:    tsFilename,
 	}
 	if err = h.playlist.WriteInf(inf); err != nil {
@@ -118,11 +116,11 @@ func (h *HLSRecorder) createHlsTsSegmentFile() (err error) {
 	}
 	var vcodec codec.VideoCodecID = 0
 	var acodec codec.AudioCodecID = 0
-	if h.Video.Track != nil {
-		vcodec = h.Video.Track.CodecID
+	if h.Video != nil {
+		vcodec = h.Video.CodecID
 	}
-	if h.Audio.Track != nil {
-		acodec = h.Audio.Track.CodecID
+	if h.Audio != nil {
+		acodec = h.Audio.CodecID
 	}
 	mpegts.WritePMTPacket(fw, vcodec, acodec)
 	return err
diff --git a/mp4.go b/mp4.go
index fd55768..6b5b41c 100644
--- a/mp4.go
+++ b/mp4.go
@@ -10,7 +10,6 @@ import (
 	. "m7s.live/engine/v4"
 	"m7s.live/engine/v4/codec"
 	"m7s.live/engine/v4/track"
-	"m7s.live/engine/v4/util"
 )
 
 type mediaContext struct {
@@ -91,11 +90,11 @@ func (r *MP4Recorder) OnEvent(event any) {
 			r.SetIO(file)
 			r.InitSegment = mp4.CreateEmptyInit()
 			r.Moov.Mvhd.NextTrackID = 1
-			if r.Video.Track != nil {
-				r.OnEvent(r.Video.Track)
+			if r.VideoReader.Track != nil {
+				r.OnEvent(r.VideoReader.Track)
 			}
-			if r.Audio.Track != nil {
-				r.OnEvent(r.Audio.Track)
+			if r.AudioReader.Track != nil {
+				r.OnEvent(r.AudioReader.Track)
 			}
 			r.ftyp.Encode(r)
 			r.Moov.Encode(r)
@@ -116,12 +115,12 @@ func (r *MP4Recorder) OnEvent(event any) {
 			r.ftyp = mp4.NewFtyp("isom", 0x200, []string{
 				"isom", "iso2", "avc1", "mp41",
 			})
-			newTrak.SetAVCDescriptor("avc1", v.DecoderConfiguration.Raw[0:1], v.DecoderConfiguration.Raw[1:2], true)
+			newTrak.SetAVCDescriptor("avc1", v.ParamaterSets[0:1], v.ParamaterSets[1:2], true)
 		case codec.CodecID_H265:
 			r.ftyp = mp4.NewFtyp("isom", 0x200, []string{
 				"isom", "iso2", "hvc1", "mp41",
 			})
-			newTrak.SetHEVCDescriptor("hvc1", v.DecoderConfiguration.Raw[0:1], v.DecoderConfiguration.Raw[1:2], v.DecoderConfiguration.Raw[2:3], true)
+			newTrak.SetHEVCDescriptor("hvc1", v.ParamaterSets[0:1], v.ParamaterSets[1:2], v.ParamaterSets[2:3], true)
 		}
 		r.AddTrack(v)
 	case *track.Audio:
@@ -134,12 +133,12 @@ func (r *MP4Recorder) OnEvent(event any) {
 		r.audio.trackId = trackID
 		switch v.CodecID {
 		case codec.CodecID_AAC:
-			switch v.Profile {
-			case 0:
-				newTrak.SetAACDescriptor(aac.HEAACv1, int(v.SampleRate))
+			switch v.AudioObjectType {
 			case 1:
-				newTrak.SetAACDescriptor(aac.AAClc, int(v.SampleRate))
+				newTrak.SetAACDescriptor(aac.HEAACv1, int(v.SampleRate))
 			case 2:
+				newTrak.SetAACDescriptor(aac.AAClc, int(v.SampleRate))
+			case 3:
 				newTrak.SetAACDescriptor(aac.HEAACv2, int(v.SampleRate))
 			}
 		case codec.CodecID_PCMA:
@@ -162,18 +161,18 @@ func (r *MP4Recorder) OnEvent(event any) {
 			r.Moov.Encode(r)
 			go r.start()
 		}
-	case *AudioFrame:
+	case AudioFrame:
 		if r.audio.trackId != 0 {
-			r.audio.push(r, v.AbsTime-r.SkipTS, v.DeltaTime, util.ConcatBuffers(v.Raw), mp4.SyncSampleFlags)
+			r.audio.push(r, v.AbsTime, v.DeltaTime, v.AUList.ToBytes(), mp4.SyncSampleFlags)
 		}
-	case *VideoFrame:
+	case VideoFrame:
 		if r.video.trackId != 0 {
 			flag := mp4.NonSyncSampleFlags
 			if v.IFrame {
 				flag = mp4.SyncSampleFlags
 			}
-			if data := util.ConcatBuffers(v.AVCC); len(data) > 5 {
-				r.video.push(r, v.AbsTime-r.SkipTS, v.DeltaTime, data[5:], flag)
+			if data := v.AUList.ToBytes(); len(data) > 5 {
+				r.video.push(r, v.AbsTime, v.DeltaTime, data[5:], flag)
 			}
 		}
 	}
diff --git a/raw.go b/raw.go
index 6a6d02e..84bb940 100644
--- a/raw.go
+++ b/raw.go
@@ -7,6 +7,7 @@ import (
 
 	. "m7s.live/engine/v4"
 	"m7s.live/engine/v4/codec"
+	"m7s.live/engine/v4/common"
 	"m7s.live/engine/v4/track"
 )
 
@@ -36,22 +37,19 @@ func (r *RawRecorder) OnEvent(event any) {
 				r.Ext = ".h265"
 			}
 		}
-	case VideoDeConf:
-		annexB := v.GetAnnexB()
-		annexB.WriteTo(r)
-	case *VideoFrame:
+	case common.ParamaterSets:
+		v.WriteAnnexBTo(r)
+	case VideoFrame:
 		if r.Fragment != 0 && r.newFile {
 			r.newFile = false
 			r.Close()
 			if file, err := r.CreateFileFn(filepath.Join(r.Stream.Path, strconv.FormatInt(time.Now().Unix(), 10)+r.Ext), false); err == nil {
 				r.SetIO(file)
-				if r.Video.Track != nil {
-					annexB := VideoDeConf(r.Video.Track.DecoderConfiguration).GetAnnexB()
-					annexB.WriteTo(r)
+				if r.Video != nil {
+					r.Video.ParamaterSets.WriteAnnexBTo(r)
 				}
 			}
 		}
-		annexB := v.GetAnnexB()
-		annexB.WriteTo(r)
+		v.WriteAnnexBTo(r)
 	}
 }
diff --git a/subscriber.go b/subscriber.go
index f271a99..431221e 100644
--- a/subscriber.go
+++ b/subscriber.go
@@ -10,6 +10,7 @@ import (
 
 type Recorder struct {
 	Subscriber
+	SkipTS  uint32
 	*Record `json:"-"`
 	newFile bool // 创建了新的文件
 	append  bool // 是否追加模式
@@ -23,7 +24,7 @@ func (r *Recorder) start() {
 }
 
 func (r *Recorder) cut(absTime uint32) {
-	if ts := absTime - r.SkipTS; int64(ts) >= int64(r.Fragment*1000) {
+	if ts := absTime - r.SkipTS; time.Duration(ts)*time.Millisecond >= r.Fragment {
 		r.SkipTS = absTime
 		r.newFile = true
 	}
@@ -41,12 +42,12 @@ func (r *Recorder) OnEvent(event any) {
 		if file, err := r.CreateFileFn(filename, r.append); err == nil {
 			r.SetIO(file)
 		}
-	case *AudioFrame:
+	case AudioFrame:
 		// 纯音频流的情况下需要切割文件
-		if r.Fragment > 0 && r.Video.Track == nil {
+		if r.Fragment > 0 && r.VideoReader.Track == nil {
 			r.cut(v.AbsTime)
 		}
-	case *VideoFrame:
+	case VideoFrame:
 		if r.Fragment > 0 && v.IFrame {
 			r.cut(v.AbsTime)
 		}