diff --git a/src/Rtmp/RtmpDemuxer.cpp b/src/Rtmp/RtmpDemuxer.cpp
index ac57e0c6..65f8fb91 100644
--- a/src/Rtmp/RtmpDemuxer.cpp
+++ b/src/Rtmp/RtmpDemuxer.cpp
@@ -29,6 +29,21 @@
 
 namespace mediakit {
 
+void RtmpDemuxer::loadMetaData(const AMFValue &val){
+    try {
+        makeVideoTrack(val["videocodecid"]);
+        makeAudioTrack(val["audiocodecid"]);
+        val.object_for_each([&](const string &key, const AMFValue &val) {
+            if (key == "duration") {
+                _fDuration = val.as_number();
+                return;
+            }
+        });
+    }catch (std::exception &ex){
+        WarnL << ex.what();
+    }
+}
+
 bool RtmpDemuxer::inputRtmp(const RtmpPacket::Ptr &pkt) {
     switch (pkt->typeId) {
         case MSG_VIDEO: {
diff --git a/src/Rtmp/RtmpDemuxer.h b/src/Rtmp/RtmpDemuxer.h
index 243ea676..a2c900a8 100644
--- a/src/Rtmp/RtmpDemuxer.h
+++ b/src/Rtmp/RtmpDemuxer.h
@@ -43,11 +43,10 @@ class RtmpDemuxer : public Demuxer{
 public:
 	typedef std::shared_ptr<RtmpDemuxer> Ptr;
 
-	/**
-	 * 等效于RtmpDemuxer(AMFValue(AMF_NULL))
-	 */
-	RtmpDemuxer(){}
-	virtual ~RtmpDemuxer(){};
+	RtmpDemuxer() = default;
+	virtual ~RtmpDemuxer() = default;
+
+	void loadMetaData(const AMFValue &metadata);
 
 	/**
 	 * 开始解复用
diff --git a/src/Rtmp/RtmpMediaSourceImp.h b/src/Rtmp/RtmpMediaSourceImp.h
index 95fba9fc..b7d0f4a7 100644
--- a/src/Rtmp/RtmpMediaSourceImp.h
+++ b/src/Rtmp/RtmpMediaSourceImp.h
@@ -61,11 +61,19 @@ public:
 
 	~RtmpMediaSourceImp() = default;
 
+	/**
+	 * 设置metadata
+	 */
+	void setMetaData(const AMFValue &metadata) override{
+		_demuxer->loadMetaData(metadata);
+		RtmpMediaSource::setMetaData(metadata);
+	}
+
 	/**
 	 * 输入rtmp并解析
 	 */
 	void onWrite(const RtmpPacket::Ptr &pkt,bool key_pos = true) override {
-		_demuxer->inputRtmp(pkt);
+		key_pos = _demuxer->inputRtmp(pkt);
 		RtmpMediaSource::onWrite(pkt,key_pos);
 	}
 
@@ -95,7 +103,7 @@ public:
 	 */
 	void setProtocolTranslation(bool enableRtsp, bool enableHls, bool enableMP4) {
 		//不重复生成rtmp
-		_muxer = std::make_shared<MultiMediaSourceMuxer>(getVhost(), getApp(), getId(), 0, enableRtsp, false, enableHls, enableMP4);
+		_muxer = std::make_shared<MultiMediaSourceMuxer>(getVhost(), getApp(), getId(), _demuxer->getDuration(), enableRtsp, false, enableHls, enableMP4);
 		_muxer->setListener(getListener());
 		_muxer->setTrackListener(this);
 	}
diff --git a/src/Rtsp/RtspDemuxer.cpp b/src/Rtsp/RtspDemuxer.cpp
index 69929463..950d2e12 100644
--- a/src/Rtsp/RtspDemuxer.cpp
+++ b/src/Rtsp/RtspDemuxer.cpp
@@ -34,7 +34,7 @@ using namespace std;
 
 namespace mediakit {
 
-RtspDemuxer::RtspDemuxer(const string& sdp) {
+void RtspDemuxer::loadSdp(const string &sdp){
 	loadSdp(SdpParser(sdp));
 }
 
diff --git a/src/Rtsp/RtspDemuxer.h b/src/Rtsp/RtspDemuxer.h
index 8a4d407e..c864c19a 100644
--- a/src/Rtsp/RtspDemuxer.h
+++ b/src/Rtsp/RtspDemuxer.h
@@ -40,8 +40,13 @@ namespace mediakit {
 class RtspDemuxer : public Demuxer{
 public:
 	typedef std::shared_ptr<RtspDemuxer> Ptr;
-	RtspDemuxer(const string &sdp);
-	virtual ~RtspDemuxer(){};
+	RtspDemuxer() = default;
+    virtual ~RtspDemuxer() = default;
+
+    /**
+     * 加载sdp
+     */
+    void loadSdp(const string &sdp);
 
 	/**
 	 * 开始解复用
diff --git a/src/Rtsp/RtspMediaSourceImp.h b/src/Rtsp/RtspMediaSourceImp.h
index 9ffee7ae..9b355dd5 100644
--- a/src/Rtsp/RtspMediaSourceImp.h
+++ b/src/Rtsp/RtspMediaSourceImp.h
@@ -45,15 +45,18 @@ public:
 	 * @param id 流id
 	 * @param ringSize 环形缓存大小
 	 */
-    RtspMediaSourceImp(const string &vhost, const string &app, const string &id, int ringSize = 0) : RtspMediaSource(vhost, app, id,ringSize) {}
+    RtspMediaSourceImp(const string &vhost, const string &app, const string &id, int ringSize = 0) : RtspMediaSource(vhost, app, id,ringSize) {
+        _demuxer = std::make_shared<RtspDemuxer>();
+        _demuxer->setTrackListener(this);
+    }
+
     ~RtspMediaSourceImp() = default;
 
     /**
      * 设置sdp
      */
     void setSdp(const string &strSdp) override {
-        _demuxer = std::make_shared<RtspDemuxer>(strSdp);
-        _demuxer->setTrackListener(this);
+        _demuxer->loadSdp(strSdp);
         RtspMediaSource::setSdp(strSdp);
     }
 
@@ -61,9 +64,7 @@ public:
      * 输入rtp并解析
      */
     void onWrite(const RtpPacket::Ptr &rtp, bool key_pos) override {
-        if (_demuxer) {
-            key_pos = _demuxer->inputRtp(rtp);
-        }
+        key_pos = _demuxer->inputRtp(rtp);
         RtspMediaSource::onWrite(rtp, key_pos);
     }
 
@@ -93,7 +94,7 @@ public:
 	 */
     void setProtocolTranslation(bool enableRtmp,bool enableHls,bool enableMP4){
         //不重复生成rtsp
-        _muxer = std::make_shared<MultiMediaSourceMuxer>(getVhost(), getApp(), getId(), 0, false, enableRtmp, enableHls, enableMP4);
+        _muxer = std::make_shared<MultiMediaSourceMuxer>(getVhost(), getApp(), getId(), _demuxer->getDuration(), false, enableRtmp, enableHls, enableMP4);
         _muxer->setListener(getListener());
         _muxer->setTrackListener(this);
     }
diff --git a/src/Rtsp/RtspPlayerImp.h b/src/Rtsp/RtspPlayerImp.h
index fe6eff40..99b008ed 100644
--- a/src/Rtsp/RtspPlayerImp.h
+++ b/src/Rtsp/RtspPlayerImp.h
@@ -66,7 +66,8 @@ private:
 		if(_pRtspMediaSrc){
             _pRtspMediaSrc->setSdp(sdp);
 		}
-        _delegate.reset(new RtspDemuxer(sdp));
+        _delegate.reset(new RtspDemuxer);
+        _delegate->loadSdp(sdp);
         return true;
 	}
 	void onRecvRTP(const RtpPacket::Ptr &rtp, const SdpTrack::Ptr &track) override {