diff --git a/publisher.go b/publisher.go
index d158941..b1c52d4 100644
--- a/publisher.go
+++ b/publisher.go
@@ -25,6 +25,10 @@ func (p *RTSPPublisher) SetTracks() error {
 	p.Tracks = make([]common.AVTrack, len(p.tracks))
 	defer func() {
 		for i, track := range p.Tracks {
+			if track == nil {
+				p.Info("unknown track", zap.String("codec", p.tracks[i].String()))
+				continue
+			}
 			p.Info("set track", zap.Int("trackId", i), zap.String("name", track.GetBase().Name))
 		}
 	}()
@@ -65,7 +69,7 @@ func (p *RTSPPublisher) SetTracks() error {
 			case "h264":
 				vt := NewH264(p.Stream)
 				if payloadType, err := strconv.Atoi(vals[0]); err == nil {
-					vt.DecoderConfiguration.PayloadType = byte(payloadType)
+					vt.PayloadType = byte(payloadType)
 				}
 				p.Tracks[trackId] = vt
 				t := track.(*gortsplib.TrackH264)
@@ -78,7 +82,7 @@ func (p *RTSPPublisher) SetTracks() error {
 			case "h265", "hevc":
 				vt := NewH265(p.Stream)
 				if payloadType, err := strconv.Atoi(vals[0]); err == nil {
-					vt.DecoderConfiguration.PayloadType = byte(payloadType)
+					vt.PayloadType = byte(payloadType)
 				}
 				p.Tracks[trackId] = vt
 				if v, ok := fmtp["sprop-vps"]; ok {
@@ -96,7 +100,7 @@ func (p *RTSPPublisher) SetTracks() error {
 			case "pcma":
 				at := NewG711(p.Stream, true)
 				if payloadType, err := strconv.Atoi(vals[0]); err == nil {
-					at.DecoderConfiguration.PayloadType = byte(payloadType)
+					at.PayloadType = byte(payloadType)
 				}
 				p.Tracks[trackId] = at
 				at.SampleRate = uint32(timeScale)
@@ -110,7 +114,7 @@ func (p *RTSPPublisher) SetTracks() error {
 			case "pcmu":
 				at := NewG711(p.Stream, false)
 				if payloadType, err := strconv.Atoi(vals[0]); err == nil {
-					at.DecoderConfiguration.PayloadType = byte(payloadType)
+					at.PayloadType = byte(payloadType)
 				}
 				p.Tracks[trackId] = at
 				at.SampleRate = uint32(timeScale)
@@ -124,13 +128,13 @@ func (p *RTSPPublisher) SetTracks() error {
 			case "mpeg4-generic":
 				at := NewAAC(p.Stream)
 				if payloadType, err := strconv.Atoi(vals[0]); err == nil {
-					at.DecoderConfiguration.PayloadType = byte(payloadType)
+					at.PayloadType = byte(payloadType)
 				}
 				p.Tracks[trackId] = at
 				if config, ok := fmtp["config"]; ok {
 					asc, _ := hex.DecodeString(config)
 					// 复用AVCC写入逻辑，解析出AAC的配置信息
-					at.WriteAVCC(0, append([]byte{0xAF, 0}, asc...))
+					at.WriteAVCCSequenceHead(asc)
 				} else {
 					RTSPPlugin.Warn("aac no config")
 				}
diff --git a/subscriber.go b/subscriber.go
index d50e21e..a17bc62 100644
--- a/subscriber.go
+++ b/subscriber.go
@@ -16,35 +16,34 @@ type RTSPSubscriber struct {
 func (s *RTSPSubscriber) OnEvent(event any) {
 	switch v := event.(type) {
 	case *track.Video:
-		if s.Video.Track != nil {
+		if s.Video != nil {
 			return
 		}
 		switch v.CodecID {
 		case codec.CodecID_H264:
-			extra := v.DecoderConfiguration.Raw
 			vtrack := &gortsplib.TrackH264{
-				PayloadType: v.DecoderConfiguration.PayloadType, SPS: extra[0], PPS: extra[1],
+				PayloadType: v.PayloadType, SPS: v.ParamaterSets[0], PPS: v.ParamaterSets[1],
 			}
 			s.videoTrackId = len(s.tracks)
 			s.tracks = append(s.tracks, vtrack)
 		case codec.CodecID_H265:
 			vtrack := &gortsplib.TrackH265{
-				PayloadType: v.DecoderConfiguration.PayloadType, VPS: v.DecoderConfiguration.Raw[0], SPS: v.DecoderConfiguration.Raw[1], PPS: v.DecoderConfiguration.Raw[2],
+				PayloadType: v.PayloadType, VPS: v.ParamaterSets[0], SPS: v.ParamaterSets[1], PPS: v.ParamaterSets[2],
 			}
 			s.videoTrackId = len(s.tracks)
 			s.tracks = append(s.tracks, vtrack)
 		}
 		s.AddTrack(v)
 	case *track.Audio:
-		if s.Audio.Track != nil {
+		if s.Audio != nil {
 			return
 		}
 		switch v.CodecID {
 		case codec.CodecID_AAC:
 			var mpegConf mpeg4audio.Config
-			mpegConf.Unmarshal(v.DecoderConfiguration.Raw)
+			mpegConf.Unmarshal(v.SequenceHead[2:])
 			atrack := &gortsplib.TrackMPEG4Audio{
-				PayloadType: v.DecoderConfiguration.PayloadType, Config: &mpegConf, SizeLength: 13, IndexLength: 3, IndexDeltaLength: 3,
+				PayloadType: v.PayloadType, Config: &mpegConf, SizeLength: 13, IndexLength: 3, IndexDeltaLength: 3,
 			}
 			s.audioTrackId = len(s.tracks)
 			s.tracks = append(s.tracks, atrack)