diff --git a/go.mod b/go.mod
index 36cbdac..1f0d969 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module m7s.live/plugin/rtsp/v4
 go 1.18
 
 require (
-	github.com/bluenviron/gortsplib/v4 v4.2.2-0.20231023175953-d4bb674a5091
+	github.com/bluenviron/gortsplib/v4 v4.3.0
 	github.com/bluenviron/mediacommon v1.5.0
 	github.com/pion/rtp v1.8.2
 	go.uber.org/zap v1.24.0
@@ -17,7 +17,7 @@ require (
 	github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 // indirect
 	github.com/golang/mock v1.6.0 // indirect
 	github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 // indirect
-	github.com/google/uuid v1.3.1 // indirect
+	github.com/google/uuid v1.4.0 // indirect
 	github.com/logrusorgru/aurora/v4 v4.0.0 // indirect
 	github.com/lufia/plan9stats v0.0.0-20230326075908-cb1d2100619a // indirect
 	github.com/mcuadros/go-defaults v1.2.0 // indirect
@@ -46,4 +46,4 @@ require (
 	golang.org/x/sys v0.13.0 // indirect
 	golang.org/x/tools v0.9.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-)
\ No newline at end of file
+)
diff --git a/go.sum b/go.sum
index 26572f5..0cb3345 100644
--- a/go.sum
+++ b/go.sum
@@ -1,7 +1,7 @@
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
-github.com/bluenviron/gortsplib/v4 v4.2.2-0.20231023175953-d4bb674a5091 h1:VY+xh0y9kIrAqwuJHUOdS/ZdY2JPtNqzWtVN4QJr2Lo=
-github.com/bluenviron/gortsplib/v4 v4.2.2-0.20231023175953-d4bb674a5091/go.mod h1:VOoeI2VxRKh5eEg6Y48DGb/oLxU1i+X0Xzv9z8dvsUQ=
+github.com/bluenviron/gortsplib/v4 v4.3.0 h1:wYtXickYP9zkCxbBIt2WEseQPX0wROB+K0DAew4Ls7g=
+github.com/bluenviron/gortsplib/v4 v4.3.0/go.mod h1:4XBcXsbK4MDFqnraexSDeKj++ZzrSd81CVplSpSNqKk=
 github.com/bluenviron/mediacommon v1.5.0 h1:lS0YKNo22ZOyCsYcLh3jn3TgUALqYw0f7RVwalC09vI=
 github.com/bluenviron/mediacommon v1.5.0/go.mod h1:Ij/kE1LEucSjryNBVTyPL/gBI0d6/Css3f5PyrM957w=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
@@ -51,8 +51,8 @@ github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeN
 github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 h1:yAJXTCF9TqKcTiHJAE8dj7HMvPfh66eeA2JYW7eFpSE=
 github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/google/uuid v1.3.1 h1:KjJaJ9iWZ3jOFZIf1Lqf4laDRCasjl0BCmnEGxkdLb4=
-github.com/google/uuid v1.3.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/google/uuid v1.4.0 h1:MtMxsa51/r9yyhkyLsVeVt0B+BGQZzpQiTQ4eHZ8bc4=
+github.com/google/uuid v1.4.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
diff --git a/subscriber.go b/subscriber.go
index 1dc73d1..7d375f3 100644
--- a/subscriber.go
+++ b/subscriber.go
@@ -1,6 +1,8 @@
 package rtsp
 
 import (
+	"fmt"
+
 	"github.com/bluenviron/gortsplib/v4"
 	"github.com/bluenviron/gortsplib/v4/pkg/description"
 	"github.com/bluenviron/gortsplib/v4/pkg/format"
@@ -72,16 +74,22 @@ func (s *RTSPSubscriber) OnEvent(event any) {
 			s.tracks = append(s.tracks, audio)
 		case codec.CodecID_PCMA:
 			audio := &description.Media{
-				Type:    description.MediaTypeAudio,
-				Formats: []format.Format{&format.G711{}},
+				Type: description.MediaTypeAudio,
+				Formats: []format.Format{&format.Generic{
+					PayloadTyp: v.PayloadType,
+					ClockRat:   int(v.SampleRate),
+					RTPMa:      fmt.Sprintf("PCMA/%d", v.SampleRate),
+				}},
 			}
 			s.audioTrack = audio
 			s.tracks = append(s.tracks, audio)
 		case codec.CodecID_PCMU:
 			audio := &description.Media{
 				Type: description.MediaTypeAudio,
-				Formats: []format.Format{&format.G711{
-					MULaw: true,
+				Formats: []format.Format{&format.Generic{
+					PayloadTyp: v.PayloadType,
+					ClockRat:   int(v.SampleRate),
+					RTPMa:      fmt.Sprintf("PCMU/%d", v.SampleRate),
 				}},
 			}
 			s.audioTrack = audio
@@ -90,7 +98,7 @@ func (s *RTSPSubscriber) OnEvent(event any) {
 		s.AddTrack(v)
 	case ISubscriber:
 		s.session = &description.Session{
-			Medias:  s.tracks,
+			Medias: s.tracks,
 		}
 		if s.server != nil {
 			s.stream = gortsplib.NewServerStream(s.server, s.session)