diff --git a/client.go b/client.go
index ca4ab8f..b5312bf 100644
--- a/client.go
+++ b/client.go
@@ -231,10 +231,10 @@ func (client *RTSP) requestStream() (err error) {
 				client.Conn.timeout = 0 //	UDP ignore timeout
 			}
 		case "audio":
-			if len(sdpInfo.Config) < 2 {
-				Printf("Setup audio err codec not support: %s", client.ASdp.Codec)
-			} else {
+			if len(sdpInfo.Config) > 0 {
 				client.WriteASC(sdpInfo.Config)
+			}else{
+				client.setAudioFormat()
 			}
 			if client.TransType == TRANS_TYPE_TCP {
 				headers["Transport"] = fmt.Sprintf("RTP/AVP/TCP;unicast;interleaved=%d-%d", client.aRTPChannel, client.aRTPControlChannel)
@@ -337,9 +337,6 @@ func (client *RTSP) startStream() {
 				pack = &RTPPack{
 					Type: RTP_TYPE_AUDIO,
 				}
-				if client.ASdp.Codec != "aac" {
-					continue
-				}
 			case client.aRTPControlChannel:
 				pack = &RTPPack{
 					Type: RTP_TYPE_AUDIOCONTROL,
diff --git a/go.mod b/go.mod
index 2e0e6d9..76e21f1 100644
--- a/go.mod
+++ b/go.mod
@@ -3,8 +3,8 @@ module github.com/Monibuca/plugin-rtsp
 go 1.13
 
 require (
-	github.com/Monibuca/engine/v2 v2.1.9
-	github.com/Monibuca/plugin-rtp v0.0.0-20200531014802-504413c0dfcb
+	github.com/Monibuca/engine/v2 v2.2.0
+	github.com/Monibuca/plugin-rtp v1.0.0
 	github.com/logrusorgru/aurora v2.0.3+incompatible // indirect
 	github.com/mattn/go-colorable v0.1.7 // indirect
 	github.com/pion/rtp v1.6.0 // indirect
diff --git a/go.sum b/go.sum
index ea2a938..a5aaa28 100644
--- a/go.sum
+++ b/go.sum
@@ -6,8 +6,11 @@ github.com/Monibuca/engine/v2 v2.1.2 h1:7dUrHJAPEtvGFOO4GsKGjfMCmcbMrtLyYQ7WoK5E
 github.com/Monibuca/engine/v2 v2.1.2/go.mod h1:34EYjjV15G6myuHOKaJkO7y5tJ1Arq/NfC9Weacr2mc=
 github.com/Monibuca/engine/v2 v2.1.9 h1:IulMIeP24qv8xWaI+tcg233Y7w3mCaLXxt4iQaVpT7s=
 github.com/Monibuca/engine/v2 v2.1.9/go.mod h1:34EYjjV15G6myuHOKaJkO7y5tJ1Arq/NfC9Weacr2mc=
+github.com/Monibuca/engine/v2 v2.2.0 h1:A4SyWwzVLegd8Oa6LfSW3LpNfBmWq+MHJJLO55gvaYI=
+github.com/Monibuca/engine/v2 v2.2.0/go.mod h1:34EYjjV15G6myuHOKaJkO7y5tJ1Arq/NfC9Weacr2mc=
 github.com/Monibuca/plugin-rtp v0.0.0-20200531014802-504413c0dfcb h1:CnmoQ8XsWxs/6mulbQfTGUa8cPr6c/3bkkTsNozRBwE=
 github.com/Monibuca/plugin-rtp v0.0.0-20200531014802-504413c0dfcb/go.mod h1:8HxBilkF835Lepe/DLUCjaw1mRiu3MxTDsG7g9UcfZA=
+github.com/Monibuca/plugin-rtp v1.0.0/go.mod h1:0xkNm23a/BjVnEMz1zXyOqfEjoVmGe3PJqPNF1KyFGc=
 github.com/StackExchange/wmi v0.0.0-20190523213315-cbe66965904d h1:G0m3OIz70MZUWq3EgK3CesDbo8upS2Vm9/P3FtgI+Jk=
 github.com/StackExchange/wmi v0.0.0-20190523213315-cbe66965904d/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
@@ -22,6 +25,7 @@ github.com/logrusorgru/aurora v0.0.0-20200102142835-e9ef32dff381 h1:bqDmpDG49ZRn
 github.com/logrusorgru/aurora v0.0.0-20200102142835-e9ef32dff381/go.mod h1:7rIyQOR62GCctdiQpZ/zOJlFyk6y+94wXzv6RNZgaR4=
 github.com/logrusorgru/aurora v2.0.3+incompatible h1:tOpm7WcpBTn4fjmVfgpQq0EfczGlG91VSDkswnjF5A8=
 github.com/logrusorgru/aurora v2.0.3+incompatible/go.mod h1:7rIyQOR62GCctdiQpZ/zOJlFyk6y+94wXzv6RNZgaR4=
+github.com/mask-pp/rtp-ps v1.0.0/go.mod h1:jCxsZ2G7z/jX+aqFypEWMePnhNrfnUiXUEKm6Xp0vgU=
 github.com/mattn/go-colorable v0.1.6 h1:6Su7aK7lXmJ/U79bYtBjLNaha4Fs1Rg9plHpcH+vvnE=
 github.com/mattn/go-colorable v0.1.6/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
 github.com/mattn/go-colorable v0.1.7 h1:bQGKb3vps/j0E9GfJQ03JyhRuxsvdAanXlT9BTw3mdw=
diff --git a/main.go b/main.go
index 0bfa63d..8881eb0 100644
--- a/main.go
+++ b/main.go
@@ -144,6 +144,20 @@ type RTSP struct {
 	UDPClient          *UDPClient
 	Auth               func(string) string
 }
+func (rtsp *RTSP) setAudioFormat(){
+	switch rtsp.ASdp.Codec {
+	case "aac":
+		rtsp.AudioInfo.SoundFormat = 10
+	case "pcma":
+		rtsp.AudioInfo.SoundFormat = 7
+		rtsp.AudioInfo.SoundRate = rtsp.ASdp.TimeScale
+		rtsp.AudioInfo.SoundSize = 16
+	case "pcmu":
+		rtsp.AudioInfo.SoundFormat = 8
+		rtsp.AudioInfo.SoundRate = rtsp.ASdp.TimeScale
+		rtsp.AudioInfo.SoundSize = 16
+	}
+}
 type RTSPClientInfo struct {
 	Agent    string
 	Session  string
diff --git a/session.go b/session.go
index f81abf7..c3279b5 100644
--- a/session.go
+++ b/session.go
@@ -318,12 +318,15 @@ func (session *RTSP) handleRequest(req *Request) {
 		session.SDPRaw = req.Body
 		session.SDPMap = ParseSDP(req.Body)
 		if session.Publish(streamPath) {
-			var ok bool
-			if session.ASdp, ok = session.SDPMap["audio"]; ok {
-				session.WriteASC(session.ASdp.Config)
+			if session.ASdp, session.HasAudio = session.SDPMap["audio"]; session.HasAudio {
+				if len(session.ASdp.Control) >0 {
+					session.WriteASC(session.ASdp.Config)
+				}else{
+					session.setAudioFormat()
+				}
 				Printf("audio codec[%s]\n", session.ASdp.Codec)
 			}
-			if session.VSdp, ok = session.SDPMap["video"]; ok {
+			if session.VSdp, session.HasVideo = session.SDPMap["video"]; session.HasVideo {
 				if len(session.VSdp.SpropParameterSets) > 1 {
 					session.WriteSPS(session.VSdp.SpropParameterSets[0])
 					session.WritePPS(session.VSdp.SpropParameterSets[1])