diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..2f6747b
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,34 @@
+# Compile Stage 
+FROM golang:1.23.1-bullseye AS builder
+
+
+LABEL stage=gobuilder
+
+# Env 
+ENV CGO_ENABLE 0
+ENV GOOS linux 
+ENV GOARCH amd64
+#ENV GOPROXY https://goproxy.cn,direct
+ENV HOME /monibuca 
+
+WORKDIR /
+
+RUN git clone -b v5 --depth 1 https://github.com/langhuihui/monibuca
+
+# compile 
+WORKDIR /monibuca
+RUN go build -tags sqlite -o ./build/monibuca ./example/default/main.go
+
+RUN cp -r /monibuca/example/default/config.yaml /monibuca/build
+
+# Running Stage 
+FROM alpine:latest
+
+WORKDIR /monibuca 
+COPY --from=builder /monibuca/build /monibuca/
+RUN cp -r ./config.yaml /etc/monibuca
+# Export necessary ports 
+EXPOSE 8080 8443 1935 554 5060 9000-20000
+EXPOSE 5060/udp
+
+CMD [ "./monibuca", "-c", "/etc/monibuca/config.yaml" ]
diff --git a/example/default/main.go b/example/default/main.go
index 80b4480..02c5e4a 100644
--- a/example/default/main.go
+++ b/example/default/main.go
@@ -17,6 +17,7 @@ import (
 	_ "m7s.live/m7s/v5/plugin/stress"
 	_ "m7s.live/m7s/v5/plugin/transcode"
 	_ "m7s.live/m7s/v5/plugin/webrtc"
+	_ "m7s.live/m7s/v5/plugin/sei"
 )
 
 func main() {
diff --git a/pkg/config/types.go b/pkg/config/types.go
index 375ba49..bf7d6fc 100755
--- a/pkg/config/types.go
+++ b/pkg/config/types.go
@@ -1,9 +1,10 @@
 package config
 
 import (
-	"m7s.live/m7s/v5/pkg/util"
 	"net/url"
 	"time"
+
+	"m7s.live/m7s/v5/pkg/util"
 )
 
 type (
@@ -56,13 +57,14 @@ type (
 		Fragment time.Duration `desc:"分片时长"`   // 分片时长
 		Append   bool          `desc:"是否追加录制"` // 是否追加录制
 	}
+	TransfromOutput struct {
+		Target     string `desc:"转码目标"` // 转码目标
+		StreamPath string
+		Conf       any
+	}
 	Transform struct {
 		Input  any
-		Output []struct {
-			Target     string `desc:"转码目标"` // 转码目标
-			StreamPath string
-			Conf       any
-		}
+		Output []TransfromOutput
 	}
 	OnPublish struct {
 		Push      map[Regexp]Push
diff --git a/pkg/raw.go b/pkg/raw.go
index ae49746..581ec3c 100644
--- a/pkg/raw.go
+++ b/pkg/raw.go
@@ -57,6 +57,7 @@ func (r *RawAudio) Demux(ctx codec.ICodecCtx) (any, error) {
 
 func (r *RawAudio) Mux(ctx codec.ICodecCtx, frame *AVFrame) {
 	r.InitRecycleIndexes(0)
+	r.FourCC = ctx.FourCC()
 	r.Memory = frame.Raw.(util.Memory)
 	r.Timestamp = frame.Timestamp
 }
@@ -158,6 +159,7 @@ func (h *H26xFrame) Demux(ctx codec.ICodecCtx) (any, error) {
 }
 
 func (h *H26xFrame) Mux(ctx codec.ICodecCtx, frame *AVFrame) {
+	h.FourCC = ctx.FourCC()
 	h.Nalus = frame.Raw.(Nalus)
 	h.Timestamp = frame.Timestamp
 	h.CTS = frame.CTS
diff --git a/pkg/task/job.go b/pkg/task/job.go
index 1dbd5ca..9e93951 100644
--- a/pkg/task/job.go
+++ b/pkg/task/job.go
@@ -79,23 +79,8 @@ func (mt *Job) RangeSubTask(callback func(task ITask) bool) {
 	}
 }
 
-func (mt *Job) AddTaskLazy(t IJob) {
-	task := t.GetTask()
-	task.parent = mt
-	task.handler = t
-}
-
 func (mt *Job) AddTask(t ITask, opt ...any) (task *Task) {
-	mt.lazyRun.Do(func() {
-		if mt.parent != nil && mt.Context == nil {
-			mt.parent.AddTask(mt.handler) //from lazy
-		}
-		mt.childrenDisposed = make(chan struct{})
-		mt.addSub = make(chan ITask, 10)
-		go mt.run()
-	})
-	if task = t.GetTask(); task.Context == nil {
-		task.parentCtx = mt.Context
+	if task = t.GetTask(); t != task.handler { // first add
 		for _, o := range opt {
 			switch v := o.(type) {
 			case context.Context:
@@ -108,10 +93,29 @@ func (mt *Job) AddTask(t ITask, opt ...any) (task *Task) {
 				task.Logger = v
 			}
 		}
-		if task.parentCtx == nil {
-			panic("context is nil")
-		}
 		task.parent = mt
+		task.handler = t
+		switch t.(type) {
+		case TaskStarter, TaskBlock, TaskGo:
+			// need start now
+		default:
+			// lazy start
+			return
+		}
+	}
+
+	mt.lazyRun.Do(func() {
+		if mt.parent != nil && mt.Context == nil {
+			mt.parent.AddTask(mt.handler) // second add, lazy start
+		}
+		mt.childrenDisposed = make(chan struct{})
+		mt.addSub = make(chan ITask, 10)
+		go mt.run()
+	})
+	if task.Context == nil {
+		if task.parentCtx == nil {
+			task.parentCtx = mt.Context
+		}
 		task.level = mt.level + 1
 		if task.ID == 0 {
 			task.ID = GetNextTaskID()
diff --git a/plugin/flv/pkg/record.go b/plugin/flv/pkg/record.go
index aefb47f..ec4e8d2 100644
--- a/plugin/flv/pkg/record.go
+++ b/plugin/flv/pkg/record.go
@@ -23,7 +23,7 @@ type WriteFlvMetaTagQueueTask struct {
 var writeMetaTagQueueTask WriteFlvMetaTagQueueTask
 
 func init() {
-	m7s.Servers.AddTaskLazy(&writeMetaTagQueueTask)
+	m7s.Servers.AddTask(&writeMetaTagQueueTask)
 }
 
 type writeMetaTagTask struct {
diff --git a/plugin/mp4/pkg/record.go b/plugin/mp4/pkg/record.go
index 7fe83a0..a119acb 100644
--- a/plugin/mp4/pkg/record.go
+++ b/plugin/mp4/pkg/record.go
@@ -52,7 +52,7 @@ func (task *writeTrailerTask) Start() (err error) {
 }
 
 func init() {
-	m7s.Servers.AddTaskLazy(&writeTrailerQueueTask)
+	m7s.Servers.AddTask(&writeTrailerQueueTask)
 }
 
 func NewRecorder() m7s.IRecorder {
diff --git a/plugin/sei/index.go b/plugin/sei/index.go
new file mode 100644
index 0000000..ce495e1
--- /dev/null
+++ b/plugin/sei/index.go
@@ -0,0 +1,73 @@
+package plugin_sei
+
+import (
+	"io"
+	"net/http"
+	"strconv"
+
+	"m7s.live/m7s/v5"
+	"m7s.live/m7s/v5/pkg/config"
+	"m7s.live/m7s/v5/pkg/util"
+	sei "m7s.live/m7s/v5/plugin/sei/pkg"
+)
+
+var _ = m7s.InstallPlugin[SEIPlugin](sei.NewTransform)
+
+type SEIPlugin struct {
+	m7s.Plugin
+}
+
+func (conf *SEIPlugin) RegisterHandler() map[string]http.HandlerFunc {
+	return map[string]http.HandlerFunc{
+		"/api/insert/{streamPath...}": conf.api_insert,
+	}
+}
+
+func (conf *SEIPlugin) api_insert(w http.ResponseWriter, r *http.Request) {
+	q := r.URL.Query()
+	streamPath := r.PathValue("streamPath")
+	targetStreamPath := q.Get("targetStreamPath")
+	if targetStreamPath == "" {
+		targetStreamPath = streamPath + "/sei"
+	}
+	ok := conf.Server.Streams.Has(streamPath)
+	if !ok {
+		util.ReturnError(util.APIErrorNoStream, streamPath+" not found", w, r)
+		return
+	}
+	var transformer *sei.Transformer
+	if tm, ok := conf.Server.Transforms.Transformed.Get(targetStreamPath); ok {
+		transformer, ok = tm.TransformJob.Transformer.(*sei.Transformer)
+		if !ok {
+			util.ReturnError(util.APIErrorPublish, "targetStreamPath is not a sei transformer", w, r)
+			return
+		}
+	} else {
+		transformer = sei.NewTransform().(*sei.Transformer)
+		conf.Transform(streamPath, config.Transform{
+			Output: []config.TransfromOutput{
+				{
+					Target:     targetStreamPath,
+					StreamPath: targetStreamPath,
+				},
+			},
+		})
+	}
+	t := q.Get("type")
+	tb, err := strconv.ParseInt(t, 10, 8)
+	if err != nil {
+		if t == "" {
+			tb = 5
+		} else {
+			util.ReturnError(util.APIErrorQueryParse, "type must a number", w, r)
+			return
+		}
+	}
+	sei, err := io.ReadAll(r.Body)
+	if err != nil {
+		util.ReturnError(util.APIErrorNoBody, err.Error(), w, r)
+		return
+	}
+	transformer.AddSEI(byte(tb), sei)
+	util.ReturnOK(w, r)
+}
diff --git a/plugin/sei/pkg/transform.go b/plugin/sei/pkg/transform.go
new file mode 100644
index 0000000..2114e5f
--- /dev/null
+++ b/plugin/sei/pkg/transform.go
@@ -0,0 +1,90 @@
+package sei
+
+import (
+	"m7s.live/m7s/v5"
+	"m7s.live/m7s/v5/pkg"
+	"m7s.live/m7s/v5/pkg/codec"
+	"m7s.live/m7s/v5/pkg/util"
+)
+
+type Transformer struct {
+	m7s.DefaultTransformer
+	data      chan util.Buffer
+	allocator *util.ScalableMemoryAllocator
+}
+
+func (t *Transformer) AddSEI(tp byte, data []byte) {
+	l := len(data)
+	var buffer util.Buffer
+	buffer.WriteByte(tp)
+	for l >= 255 {
+		buffer.WriteByte(255)
+		l -= 255
+	}
+	buffer.WriteByte(byte(l))
+	buffer.Write(data)
+	buffer.WriteByte(0x80)
+	if len(t.data) == cap(t.data) {
+		<-t.data
+	}
+	t.data <- buffer
+}
+
+func NewTransform() m7s.ITransformer {
+	ret := &Transformer{
+		data:      make(chan util.Buffer, 10),
+		allocator: util.NewScalableMemoryAllocator(1 << util.MinPowerOf2),
+	}
+	return ret
+}
+
+func (t *Transformer) Start() (err error) {
+	return t.TransformJob.Subscribe()
+}
+
+func (t *Transformer) Run() (err error) {
+	err = t.TransformJob.Publish(t.TransformJob.Config.Output[0].StreamPath)
+	if err != nil {
+		return
+	}
+	m7s.PlayBlock(t.TransformJob.Subscriber, func(audio *pkg.RawAudio) (err error) {
+		copyAudio := &pkg.RawAudio{
+			FourCC:    audio.FourCC,
+			Timestamp: audio.Timestamp,
+		}
+		copyAudio.SetAllocator(t.allocator)
+		audio.Memory.Range(func(b []byte) {
+			copy(copyAudio.NextN(len(b)), b)
+		})
+		return t.TransformJob.Publisher.WriteAudio(copyAudio)
+	}, func(video *pkg.H26xFrame) (err error) {
+		copyVideo := &pkg.H26xFrame{
+			FourCC:    video.FourCC,
+			CTS:       video.CTS,
+			Timestamp: video.Timestamp,
+		}
+		copyVideo.SetAllocator(t.allocator)
+		if len(t.data) > 0 {
+			for seiFrame := range t.data {
+				switch video.FourCC {
+				case codec.FourCC_H264:
+					var seiNalu util.Memory
+					seiNalu.Append([]byte{byte(codec.NALU_SEI)}, seiFrame)
+					copyVideo.Nalus = append(copyVideo.Nalus, seiNalu)
+				}
+				for _, nalu := range video.Nalus {
+					mem := copyVideo.NextN(nalu.Size)
+					copy(mem, nalu.ToBytes())
+					copyVideo.Nalus.Append(mem)
+				}
+			}
+		}
+		return t.TransformJob.Publisher.WriteVideo(copyVideo)
+	})
+	return
+}
+
+func (t *Transformer) Dispose() {
+	close(t.data)
+	t.allocator.Recycle()
+}
diff --git a/server.go b/server.go
index bcb8f4e..a01d462 100644
--- a/server.go
+++ b/server.go
@@ -246,12 +246,12 @@ func (s *Server) Start() (err error) {
 			return
 		}
 	}
-	s.AddTaskLazy(&s.Records)
-	s.AddTaskLazy(&s.Streams)
-	s.AddTaskLazy(&s.Pulls)
-	s.AddTaskLazy(&s.Pushs)
-	s.AddTaskLazy(&s.Transforms)
-	s.AddTaskLazy(&s.Devices)
+	s.AddTask(&s.Records)
+	s.AddTask(&s.Streams)
+	s.AddTask(&s.Pulls)
+	s.AddTask(&s.Pushs)
+	s.AddTask(&s.Transforms)
+	s.AddTask(&s.Devices)
 	promReg := prometheus.NewPedanticRegistry()
 	promReg.MustRegister(s)
 	for _, plugin := range plugins {
diff --git a/transformer.go b/transformer.go
index 8654708..109ef9b 100644
--- a/transformer.go
+++ b/transformer.go
@@ -20,7 +20,7 @@ type (
 		Plugin      *Plugin
 		Publisher   *Publisher
 		Subscriber  *Subscriber
-		transformer ITransformer
+		Transformer ITransformer
 	}
 	DefaultTransformer struct {
 		task.Job
@@ -49,12 +49,12 @@ func (p *TransformJob) GetKey() string {
 }
 
 func (p *TransformJob) Subscribe() (err error) {
-	p.Subscriber, err = p.Plugin.Subscribe(p.transformer, p.StreamPath)
+	p.Subscriber, err = p.Plugin.Subscribe(p.Transformer, p.StreamPath)
 	return
 }
 
 func (p *TransformJob) Publish(streamPath string) (err error) {
-	p.Publisher, err = p.Plugin.Publish(p.transformer, streamPath)
+	p.Publisher, err = p.Plugin.Publish(p.Transformer, streamPath)
 	return
 }
 
@@ -62,7 +62,7 @@ func (p *TransformJob) Init(transformer ITransformer, plugin *Plugin, streamPath
 	p.Plugin = plugin
 	p.Config = conf
 	p.StreamPath = streamPath
-	p.transformer = transformer
+	p.Transformer = transformer
 	p.Description = map[string]any{
 		"streamPath": streamPath,
 		"conf":       conf,
@@ -89,7 +89,7 @@ func (p *TransformJob) Start() (err error) {
 			})
 		}
 	}
-	p.AddTask(p.transformer, p.Logger)
+	p.AddTask(p.Transformer, p.Logger)
 	return
 }