diff --git a/src/Rtsp/RtpBroadCaster.cpp b/src/Rtsp/RtpBroadCaster.cpp
index 431924d0..d0a9a7c1 100644
--- a/src/Rtsp/RtpBroadCaster.cpp
+++ b/src/Rtsp/RtpBroadCaster.cpp
@@ -126,7 +126,7 @@ RtpBroadCaster::RtpBroadCaster(const string &strLocalIp,const string &strVhost,c
 	}
 	m_pReader = src->getRing()->attach();
 	m_pReader->setReadCB([this](const RtpPacket::Ptr &pkt){
-		int i = (pkt->interleaved/2)%2;
+		int i = (int)(pkt->type);
 		auto &pSock = m_apUdpSock[i];
 		auto &peerAddr = m_aPeerUdpAddr[i];
         BufferRtp::Ptr buffer(new BufferRtp(pkt,4));
@@ -148,9 +148,8 @@ RtpBroadCaster::RtpBroadCaster(const string &strLocalIp,const string &strVhost,c
             << strVhost << " "
 			<< strApp << " " << strStream;
 }
-uint16_t RtpBroadCaster::getPort(int iTrackId){
-	int i = iTrackId%2;
-	return m_apUdpSock[i]->get_local_port();
+uint16_t RtpBroadCaster::getPort(int trackType){
+	return m_apUdpSock[trackType]->get_local_port();
 }
 string RtpBroadCaster::getIP(){
 	return inet_ntoa(m_aPeerUdpAddr[0].sin_addr);
diff --git a/src/Rtsp/RtpBroadCaster.h b/src/Rtsp/RtpBroadCaster.h
index 9c5df0d4..29199d7e 100644
--- a/src/Rtsp/RtpBroadCaster.h
+++ b/src/Rtsp/RtpBroadCaster.h
@@ -74,7 +74,7 @@ public:
 	virtual ~RtpBroadCaster();
 	static Ptr get(const string &strLocalIp,const string &strVhost,const string &strApp,const string &strStream);
 	void setDetachCB(void *listener,const onDetach &cb);
-	uint16_t getPort(int iTrackId);
+	uint16_t getPort(int trackType);
 	string getIP();
 private:
 	static recursive_mutex g_mtx;