diff --git a/src/Rtmp/RtmpPlayer.cpp b/src/Rtmp/RtmpPlayer.cpp
index 75ce6593..b840a416 100644
--- a/src/Rtmp/RtmpPlayer.cpp
+++ b/src/Rtmp/RtmpPlayer.cpp
@@ -108,6 +108,7 @@ void RtmpPlayer::play(const string &strUrl)  {
 		return false;
 	},getPoller()));
 
+	_metadata_got = false;
 	startConnect(strHost, iPort , playTimeOutSec);
 }
 void RtmpPlayer::onErr(const SockException &ex){
@@ -319,8 +320,9 @@ void RtmpPlayer::onCmd_onMetaData(AMFDecoder &dec) {
 	//TraceL;
 	auto val = dec.load<AMFValue>();
 	if(!onCheckMeta(val)){
-		throw std::runtime_error("onCheckMeta faied");
+		throw std::runtime_error("onCheckMeta failed");
 	}
+	_metadata_got = true;
 }
 
 void RtmpPlayer::onStreamDry(uint32_t ui32StreamId) {
@@ -372,6 +374,12 @@ void RtmpPlayer::onRtmpChunk(RtmpPacket &chunkData) {
 				//计算播放进度时间轴用
                 _aiNowStamp[idx] = chunkData.timeStamp;
             }
+			if(!_metadata_got){
+				_metadata_got = true;
+				if(!onCheckMeta(TitleMeta().getMetadata())){
+					throw std::runtime_error("onCheckMeta failed");
+				}
+			}
 			onMediaData_l(std::make_shared<RtmpPacket>(std::move(chunkData)));
 		}
 			break;
diff --git a/src/Rtmp/RtmpPlayer.h b/src/Rtmp/RtmpPlayer.h
index 7d479d1e..e63ee668 100644
--- a/src/Rtmp/RtmpPlayer.h
+++ b/src/Rtmp/RtmpPlayer.h
@@ -55,7 +55,7 @@ public:
 	void pause(bool bPause) override;
 	void teardown() override;
 protected:
-	virtual bool onCheckMeta(AMFValue &val) =0;
+	virtual bool onCheckMeta(const AMFValue &val) =0;
 	virtual void onMediaData(const RtmpPacket::Ptr &chunkData) =0;
 	uint32_t getProgressMilliSecond() const;
 	void seekToMilliSecond(uint32_t ms);
@@ -119,6 +119,7 @@ private:
 	uint32_t _aiFistStamp[2] = { 0, 0 };
 	uint32_t _aiNowStamp[2] = { 0, 0 };
 	Ticker _aNowStampTicker[2];
+	bool _metadata_got = false;
 };
 
 } /* namespace mediakit */
diff --git a/src/Rtmp/RtmpPlayerImp.h b/src/Rtmp/RtmpPlayerImp.h
index 8a14eeff..49e8da6a 100644
--- a/src/Rtmp/RtmpPlayerImp.h
+++ b/src/Rtmp/RtmpPlayerImp.h
@@ -62,7 +62,7 @@ public:
     }
 private:
     //派生类回调函数
-    bool onCheckMeta(AMFValue &val)  override {
+    bool onCheckMeta(const AMFValue &val) override {
         _pRtmpMediaSrc = dynamic_pointer_cast<RtmpMediaSource>(_pMediaSrc);
         if(_pRtmpMediaSrc){
             _pRtmpMediaSrc->onGetMetaData(val);