diff --git a/app/demo/customize_lalserver/customize_lalserver.go b/app/demo/customize_lalserver/customize_lalserver.go
index 5f8227d..8f2c03a 100644
--- a/app/demo/customize_lalserver/customize_lalserver.go
+++ b/app/demo/customize_lalserver/customize_lalserver.go
@@ -11,10 +11,12 @@ package main
 import (
 	"flag"
 	"fmt"
+	"github.com/q191201771/lal/pkg/aac"
 	"github.com/q191201771/lal/pkg/avc"
 	"github.com/q191201771/lal/pkg/remux"
 	"io/ioutil"
 	"os"
+	"sync"
 	"time"
 
 	"github.com/q191201771/naza/pkg/nazalog"
@@ -25,66 +27,145 @@ import (
 	"github.com/q191201771/naza/pkg/bininfo"
 )
 
-//lal/app/demo/customize_lalserver
+// lal/app/demo/customize_lalserver
 //
-// 演示lalserver通过插件功能扩展输入流
-// 提示，插件功能是基于代码层面的，和通过与lalserver建立连接将流发送到lalserver是两种不同的方式
+// [what]
+// 演示业务方如何通过lalserver的插件功能，将自身的流输入到lalserver中
+//
+// [why]
+// 业务方的流输入到lalserver后，就可以使用lalserver的功能了，比如录制功能，（使用lalserver所支持的协议）从lalserver拉流等等
+//
+// 提示，插件功能是基于代码层面的，和与lalserver建立连接将流发送到lalserver是两种不同的方式，但是流进入lalserver后，效果是一样的
 //
 // 提示，这个demo，可以看成是业务方基于lal实现的一个定制化（功能增强版）的lalserver应用
 // 换句话说，它并不强制要求在lal的github repo下
 //
-// demo的具体功能是，读取一个h264 es流文件，并将这个流输入到lalserver中
-// 注意，lalserver其实并不关心业务方的流的来源（比如网络or文件or其他）
-// 也不关心原始流的格式
-// 只要业务方将流转换成lalserver所要求的格式，调用相应的接口传入数据即可
+// [how]
+// demo的具体功能是，分别读取一个h264 es流文件和一个aac es流文件，并将音视频流输入到lalserver中
 //
-// 业务方的流输入到lalserver后，就可以使用lalserver所支持的协议，从lalserver拉流了
+// 注意，其实lalserver并不关心业务方的流的来源（比如网络or文件or其他），也不关心流的原始格式
+// 业务方只要将流转换成lalserver所要求的格式，调用相应的接口传入数据即可
 //
 
 func showHowToCustomizePub(lals logic.ILalServer) {
 	const (
 		customizePubStreamName = "c110"
 		h264filename           = "/tmp/test.h264"
+		aacfilename            = "/tmp/test.aac"
 
-		durationInterval = uint32(66)
+		audioDurationInterval = uint32(23)
+		videoDurationInterval = uint32(66)
 	)
 
+	time.Sleep(200 * time.Millisecond)
+	session, err := lals.AddCustomizePubSession(customizePubStreamName)
+	nazalog.Assert(nil, err)
+	session.WithOption(func(option *remux.AvPacketStreamOption) {
+		option.VideoFormat = remux.AvPacketStreamVideoFormatAnnexb
+	})
+
+	audioContent, err := ioutil.ReadFile(aacfilename)
+	nazalog.Assert(nil, err)
+
+	videoContent, err := ioutil.ReadFile(h264filename)
+	nazalog.Assert(nil, err)
+
+	asc, err := aac.MakeAscWithAdtsHeader(audioContent[:aac.AdtsHeaderLength])
+	nazalog.Assert(nil, err)
+
+	session.FeedAudioSpecificConfig(asc)
+
+	var (
+		m      sync.Mutex
+		audios []base.AvPacket
+		videos []base.AvPacket
+	)
+
+	var reorderFeedFilterFn = func(packet base.AvPacket) {
+		m.Lock()
+		defer m.Unlock()
+
+		if packet.IsAudio() {
+			audios = append(audios, packet)
+		} else {
+			videos = append(videos, packet)
+		}
+
+		for len(audios) > 0 && len(videos) > 0 {
+			if audios[0].Timestamp <= videos[0].Timestamp {
+				session.FeedAvPacket(audios[0])
+				audios = audios[1:]
+			} else {
+				session.FeedAvPacket(videos[0])
+				videos = videos[1:]
+			}
+		}
+	}
+
+	var wg sync.WaitGroup
+	wg.Add(2)
+
 	go func() {
-		time.Sleep(200 * time.Millisecond)
-		session, err := lals.AddCustomizePubSession(customizePubStreamName)
-		nazalog.Assert(nil, err)
-		session.WithOption(func(option *remux.AvPacketStreamOption) {
-			option.VideoFormat = remux.AvPacketStreamVideoFormatAnnexb
-		})
+		i := 0
+		timestamp := uint32(0)
+		for {
+			ctx, err := aac.NewAdtsHeaderContext(audioContent[i : i+aac.AdtsHeaderLength])
+			nazalog.Assert(nil, err)
 
-		// demo的输入比较简单，一次性将整个es文件读入
-		content, err := ioutil.ReadFile(h264filename)
-		nazalog.Assert(nil, err)
+			packet := base.AvPacket{
+				PayloadType: base.AvPacketPtAac,
+				Timestamp:   timestamp,
+				Payload:     audioContent[i+aac.AdtsHeaderLength : i+int(ctx.AdtsLength)],
+			}
+			reorderFeedFilterFn(packet)
+
+			i += int(ctx.AdtsLength)
+
+			timestamp += audioDurationInterval
+			time.Sleep(time.Duration(audioDurationInterval) * time.Millisecond)
+
+			if i == len(audioContent) {
+				break
+			}
+		}
 
+		wg.Done()
+	}()
+
+	go func() {
 		timestamp := uint32(0)
 		for {
 			// 借助lal中的一个帮助函数，将es流切割成一个一个的nal
 			// 提示，这里切割的是整个文件，并且，函数执行结束后，并没有退出for循环，换句话说，流会无限循环输入到lalserver中
-			err = avc.IterateNaluAnnexb(content, func(nal []byte) {
+			err = avc.IterateNaluAnnexb(videoContent, func(nal []byte) {
 				// 将nal数据转换为lalserver要求的格式输入
 				packet := base.AvPacket{
 					PayloadType: base.AvPacketPtAvc,
 					Timestamp:   timestamp,
 					Payload:     append(avc.NaluStartCode4, nal...),
 				}
-				session.FeedAvPacket(packet)
+				reorderFeedFilterFn(packet)
 
 				// 发送完后，计算时间戳，并按帧间隔时间延时发送
 				t := avc.ParseNaluType(nal[0])
 				if t == avc.NaluTypeSps || t == avc.NaluTypePps || t == avc.NaluTypeSei {
 					// noop
 				} else {
-					timestamp += durationInterval
-					time.Sleep(time.Duration(durationInterval) * time.Millisecond)
+					timestamp += videoDurationInterval
+					time.Sleep(time.Duration(videoDurationInterval) * time.Millisecond)
 				}
 			})
+			nazalog.Assert(nil, err)
+
+			break
 		}
+
+		wg.Done()
 	}()
+
+	wg.Wait()
+
+	lals.DelCustomizePubSession(session)
 }
 
 func main() {
@@ -95,7 +176,7 @@ func main() {
 		option.ConfFilename = confFilename
 	})
 
-	showHowToCustomizePub(lals)
+	go showHowToCustomizePub(lals)
 
 	err := lals.RunLoop()
 	nazalog.Infof("server manager done. err=%+v", err)
diff --git a/pkg/base/avpacket.go b/pkg/base/avpacket.go
index 6f9c717..9ad16b4 100644
--- a/pkg/base/avpacket.go
+++ b/pkg/base/avpacket.go
@@ -12,9 +12,9 @@ type AvPacketPt int
 
 const (
 	AvPacketPtUnknown AvPacketPt = -1
-	AvPacketPtAvc     AvPacketPt = RtpPacketTypeAvcOrHevc
-	AvPacketPtHevc    AvPacketPt = RtpPacketTypeHevc
-	AvPacketPtAac     AvPacketPt = RtpPacketTypeAac
+	AvPacketPtAvc     AvPacketPt = 96 // h264
+	AvPacketPtHevc    AvPacketPt = 98 // h265
+	AvPacketPtAac     AvPacketPt = 97
 )
 
 // AvPacket
@@ -41,3 +41,11 @@ func (a AvPacketPt) ReadableString() string {
 	}
 	return ""
 }
+
+func (packet AvPacket) IsAudio() bool {
+	return packet.PayloadType == AvPacketPtAac
+}
+
+func (packet AvPacket) IsVideo() bool {
+	return packet.PayloadType == AvPacketPtAvc || packet.PayloadType == AvPacketPtHevc
+}
diff --git a/pkg/base/unique.go b/pkg/base/unique.go
index 35422da..de9db4d 100644
--- a/pkg/base/unique.go
+++ b/pkg/base/unique.go
@@ -11,17 +11,18 @@ package base
 import "github.com/q191201771/naza/pkg/unique"
 
 const (
-	UkPreRtmpServerSession        = "RTMPPUBSUB"
-	UkPreRtmpPushSession          = "RTMPPUSH"
-	UkPreRtmpPullSession          = "RTMPPULL"
-	UkPreRtspServerCommandSession = "RTSPSRVCMD"
-	UkPreRtspPubSession           = "RTSPPUB"
-	UkPreRtspSubSession           = "RTSPSUB"
-	UkPreRtspPushSession          = "RTSPPUSH"
-	UkPreRtspPullSession          = "RTSPPULL"
-	UkPreFlvSubSession            = "FLVSUB"
-	UkPreTsSubSession             = "TSSUB"
-	UkPreFlvPullSession           = "FLVPULL"
+	UkPreCustomizePubSessionContext = "CUSTOMIZEPUB"
+	UkPreRtmpServerSession          = "RTMPPUBSUB"
+	UkPreRtmpPushSession            = "RTMPPUSH"
+	UkPreRtmpPullSession            = "RTMPPULL"
+	UkPreRtspServerCommandSession   = "RTSPSRVCMD"
+	UkPreRtspPubSession             = "RTSPPUB"
+	UkPreRtspSubSession             = "RTSPSUB"
+	UkPreRtspPushSession            = "RTSPPUSH"
+	UkPreRtspPullSession            = "RTSPPULL"
+	UkPreFlvSubSession              = "FLVSUB"
+	UkPreTsSubSession               = "TSSUB"
+	UkPreFlvPullSession             = "FLVPULL"
 
 	UkPreGroup              = "GROUP"
 	UkPreHlsMuxer           = "HLSMUXER"
@@ -32,6 +33,10 @@ const (
 //	return unique.GenUniqueKey(prefix)
 //}
 
+func GenUkCustomizePubSession() string {
+	return siUkCustomizePubSession.GenUniqueKey()
+}
+
 func GenUkRtmpServerSession() string {
 	return siUkRtmpServerSession.GenUniqueKey()
 }
@@ -89,6 +94,7 @@ func GenUkRtmp2MpegtsRemuxer() string {
 }
 
 var (
+	siUkCustomizePubSession      *unique.SingleGenerator
 	siUkRtmpServerSession        *unique.SingleGenerator
 	siUkRtmpPushSession          *unique.SingleGenerator
 	siUkRtmpPullSession          *unique.SingleGenerator
@@ -107,6 +113,7 @@ var (
 )
 
 func init() {
+	siUkCustomizePubSession = unique.NewSingleGenerator(UkPreCustomizePubSessionContext)
 	siUkRtmpServerSession = unique.NewSingleGenerator(UkPreRtmpServerSession)
 	siUkRtmpPushSession = unique.NewSingleGenerator(UkPreRtmpPushSession)
 	siUkRtmpPullSession = unique.NewSingleGenerator(UkPreRtmpPullSession)
diff --git a/pkg/innertest/iface_impl.go b/pkg/innertest/iface_impl.go
index 1f2bda8..fe2966e 100644
--- a/pkg/innertest/iface_impl.go
+++ b/pkg/innertest/iface_impl.go
@@ -136,6 +136,12 @@ var (
 
 // ---------------------------------------------------------------------------------------------------------------------
 
+var _ logic.ICustomizePubSessionContext = &logic.CustomizePubSessionContext{}
+var _ remux.IAvPacketStream = &logic.CustomizePubSessionContext{}
+var _ remux.IAvPacketStream = &remux.AvPacket2RtmpRemuxer{}
+
+// ---------------------------------------------------------------------------------------------------------------------
+
 var _ logic.ILalServer = &logic.ServerManager{}
 var _ rtmp.IServerObserver = &logic.ServerManager{}
 var _ logic.IHttpServerHandlerObserver = &logic.ServerManager{}
diff --git a/pkg/logic/customize_pubsession.go b/pkg/logic/customize_pubsession.go
index b500d32..c9089ce 100644
--- a/pkg/logic/customize_pubsession.go
+++ b/pkg/logic/customize_pubsession.go
@@ -14,6 +14,8 @@ import (
 )
 
 type CustomizePubSessionContext struct {
+	uniqueKey string
+
 	streamName string
 	remuxer    *remux.AvPacket2RtmpRemuxer
 	onRtmpMsg  func(msg base.RtmpMsg)
@@ -21,6 +23,7 @@ type CustomizePubSessionContext struct {
 
 func NewCustomizePubSessionContext(streamName string) *CustomizePubSessionContext {
 	return &CustomizePubSessionContext{
+		uniqueKey:  base.GenUkCustomizePubSession(),
 		streamName: streamName,
 		remuxer:    remux.NewAvPacket2RtmpRemuxer(),
 	}
@@ -31,6 +34,10 @@ func (ctx *CustomizePubSessionContext) WithOnRtmpMsg(onRtmpMsg func(msg base.Rtm
 	return ctx
 }
 
+func (ctx *CustomizePubSessionContext) UniqueKey() string {
+	return ctx.uniqueKey
+}
+
 func (ctx *CustomizePubSessionContext) StreamName() string {
 	return ctx.streamName
 }
@@ -41,6 +48,10 @@ func (ctx *CustomizePubSessionContext) WithOption(modOption func(option *remux.A
 	ctx.remuxer.WithOption(modOption)
 }
 
+func (ctx *CustomizePubSessionContext) FeedAudioSpecificConfig(asc []byte) {
+	ctx.remuxer.InitWithAvConfig(asc, nil, nil, nil)
+}
+
 func (ctx *CustomizePubSessionContext) FeedAvPacket(packet base.AvPacket) {
 	ctx.remuxer.FeedAvPacket(packet)
 }
diff --git a/pkg/logic/group__in.go b/pkg/logic/group__in.go
index 0bf8f65..0936a29 100644
--- a/pkg/logic/group__in.go
+++ b/pkg/logic/group__in.go
@@ -123,8 +123,10 @@ func (group *Group) AddRtmpPullSession(session *rtmp.PullSession) bool {
 
 // ---------------------------------------------------------------------------------------------------------------------
 
-func (sm *Group) DelCustomizePubSession(sessionCtx ICustomizePubSessionContext) {
-
+func (group *Group) DelCustomizePubSession(sessionCtx ICustomizePubSessionContext) {
+	group.mutex.Lock()
+	defer group.mutex.Unlock()
+	group.delCustomizePubSession(sessionCtx)
 }
 
 func (group *Group) DelRtmpPubSession(session *rtmp.ServerSession) {
@@ -147,6 +149,18 @@ func (group *Group) DelRtmpPullSession(session *rtmp.PullSession) {
 
 // ---------------------------------------------------------------------------------------------------------------------
 
+func (group *Group) delCustomizePubSession(sessionCtx ICustomizePubSessionContext) {
+	Log.Debugf("[%s] [%s] del rtmp PubSession from group.", group.UniqueKey, sessionCtx.UniqueKey())
+
+	if sessionCtx != group.customizePubSession {
+		Log.Warnf("[%s] del rtmp pub session but not match. del session=%s, group session=%p",
+			group.UniqueKey, sessionCtx.UniqueKey(), group.rtmpPubSession)
+		return
+	}
+
+	group.delIn()
+}
+
 func (group *Group) delRtmpPubSession(session *rtmp.ServerSession) {
 	Log.Debugf("[%s] [%s] del rtmp PubSession from group.", group.UniqueKey, session.UniqueKey())
 
@@ -212,6 +226,7 @@ func (group *Group) delIn() {
 
 	group.rtmpPubSession = nil
 	group.rtspPubSession = nil
+	group.customizePubSession = nil
 	group.rtsp2RtmpRemuxer = nil
 	group.rtmp2RtspRemuxer = nil
 	group.dummyAudioFilter = nil
diff --git a/pkg/logic/logic.go b/pkg/logic/logic.go
index 3fc6146..a17a128 100644
--- a/pkg/logic/logic.go
+++ b/pkg/logic/logic.go
@@ -20,17 +20,20 @@ type ILalServer interface {
 	RunLoop() error
 	Dispose()
 
-	// AddCustomizePubSession DelCustomizePubSession
+	// AddCustomizePubSession 定制化功能。业务方可以将自己的流输入到 ILalServer 中
 	//
-	// 业务方可以将自己的流输入到 ILalServer 中
+	// @example 示例见 lal/app/demo/customize_lalserver
 	//
 	AddCustomizePubSession(streamName string) (ICustomizePubSessionContext, error)
+
+	// DelCustomizePubSession 将 ICustomizePubSessionContext 从 ILalServer 中删除
+	//
 	DelCustomizePubSession(ICustomizePubSessionContext)
 
-	// StatLalInfo StatXxx... CtrlXxx...
+	// StatLalInfo StatAllGroup StatGroup CtrlStartPull CtrlKickOutSession
 	//
-	// 一些获取状态、发送控制命令的API
-	// 目的是方便业务方在不修改logic包内代码的前提下，在外层实现一些特定逻辑的定制化开发
+	// 一些获取状态、发送控制命令的API。
+	// 目的是方便业务方在不修改logic包内代码的前提下，在外层实现一些特定逻辑的定制化开发。
 	//
 	StatLalInfo() base.LalInfo
 	StatAllGroup() (sgs []base.StatGroup)
@@ -41,9 +44,7 @@ type ILalServer interface {
 
 // NewLalServer 创建一个lal server
 //
-// @param modOption
-//   - 可变参数，如果不关心，可以不填，具体字段见 Option
-//   - 目的是方便业务方在不修改logic包内代码的前提下，在外层实现一些特定逻辑的定制化开发
+// @param modOption: 定制化配置。可变参数，如果不关心，可以不填，具体字段见 Option
 //
 func NewLalServer(modOption ...ModOption) ILalServer {
 	return NewServerManager(modOption...)
@@ -52,12 +53,11 @@ func NewLalServer(modOption ...ModOption) ILalServer {
 // ---------------------------------------------------------------------------------------------------------------------
 
 type ICustomizePubSessionContext interface {
-	// WithOption FeedAvPacket
-	//
-	// 见 remux.IAvPacketStream
+	// IAvPacketStream 传入音视频数据相关的接口。具体见 remux.IAvPacketStream
 	//
-	WithOption(modOption func(option *remux.AvPacketStreamOption))
-	FeedAvPacket(packet base.AvPacket)
+	remux.IAvPacketStream
+
+	UniqueKey() string
 
 	StreamName() string
 }
@@ -77,18 +77,16 @@ type INotifyHandler interface {
 }
 
 type Option struct {
-	// ConfFilename
-	//
-	// 配置文件，注意，如果为空，内部会尝试从 DefaultConfFilenameList 读取默认配置文件
+	// ConfFilename 配置文件，注意，如果为空，内部会尝试从 DefaultConfFilenameList 读取默认配置文件
 	//
 	ConfFilename string
 
 	// NotifyHandler
 	//
 	// 事件监听
-	// 业务方可实现 INotifyHandler 接口并传入从而获取到对应的事件通知
-	// 如果不填写保持默认值nil，内部默认走http notify的逻辑（当然，还需要在配置文件中开启http notify功能）
-	// 注意，如果业务方实现了自己的事件监听，则lal server内部不再走http notify的逻辑（也即二选一）
+	// 业务方可实现 INotifyHandler 接口并传入从而获取到对应的事件通知。
+	// 如果不填写保持默认值nil，内部默认走http notify的逻辑（当然，还需要在配置文件中开启http notify功能）。
+	// 注意，如果业务方实现了自己的事件监听，则lal server内部不再走http notify的逻辑（也即二选一）。
 	//
 	NotifyHandler INotifyHandler
 }
@@ -99,9 +97,7 @@ var defaultOption = Option{
 
 type ModOption func(option *Option)
 
-// DefaultConfFilenameList
-//
-// 没有指定配置文件时，按顺序作为优先级，找到第一个存在的并使用
+// DefaultConfFilenameList 没有指定配置文件时，按顺序作为优先级，找到第一个存在的并使用
 //
 var DefaultConfFilenameList = []string{
 	filepath.FromSlash("lalserver.conf.json"),
diff --git a/pkg/remux/avpacket2rtmp.go b/pkg/remux/avpacket2rtmp.go
index d900cc0..85620f4 100644
--- a/pkg/remux/avpacket2rtmp.go
+++ b/pkg/remux/avpacket2rtmp.go
@@ -46,9 +46,8 @@ func NewAvPacket2RtmpRemuxer() *AvPacket2RtmpRemuxer {
 	}
 }
 
-func (r *AvPacket2RtmpRemuxer) WithOption(modOption func(option *AvPacketStreamOption)) *AvPacket2RtmpRemuxer {
+func (r *AvPacket2RtmpRemuxer) WithOption(modOption func(option *AvPacketStreamOption)) {
 	modOption(&r.option)
-	return r
 }
 
 func (r *AvPacket2RtmpRemuxer) WithOnRtmpMsg(onRtmpMsg rtmp.OnReadRtmpAvMsg) *AvPacket2RtmpRemuxer {
diff --git a/pkg/remux/avpacket_stream.go b/pkg/remux/avpacket_stream.go
index 8ab8361..8ecc726 100644
--- a/pkg/remux/avpacket_stream.go
+++ b/pkg/remux/avpacket_stream.go
@@ -28,5 +28,29 @@ var DefaultApsOption = AvPacketStreamOption{
 
 type IAvPacketStream interface {
 	WithOption(modOption func(option *AvPacketStreamOption))
+
+	// FeedAudioSpecificConfig 传入音频AAC的初始化数据
+	//
+	// @param asc: AudioSpecificConfig。含义可参考 aac.AscContext, aac.MakeAscWithAdtsHeader 等内容
+	//
+	FeedAudioSpecificConfig(asc []byte)
+
+	// FeedAvPacket
+	//
+	// @param packet:
+	//
+	// PayloadType: 类型，支持avc(h264)，hevc(h265)，aac
+	//
+	// Timestamp: 时间戳，单位毫秒
+	//
+	// Payload: 音视频数据，格式如下
+	//
+	// 如果是音频AAC，格式是裸数据，不需要adts头。
+	// 注意，调用 FeedAvPacket 传入音频数据前，需要先调用 FeedAudioSpecificConfig
+	//
+	// 如果是视频，支持Avcc和Annexb两种格式。
+	// Avcc也即[<4字节长度 + nal>...]，Annexb也即[<4字节start code 00 00 00 01 + nal>...]。
+	// 注意，sps和pps也通过 FeedAvPacket 传入。sps和pps可以单独调用 FeedAvPacket，也可以sps+pps+I帧组合在一起调用一次 FeedAvPacket
+	//
 	FeedAvPacket(packet base.AvPacket)
 }