diff --git a/src/Rtmp/RtmpParser.cpp b/src/Rtmp/RtmpParser.cpp
index 2a7e9113..67605b50 100644
--- a/src/Rtmp/RtmpParser.cpp
+++ b/src/Rtmp/RtmpParser.cpp
@@ -35,64 +35,70 @@ RtmpParser::RtmpParser(const AMFValue &val) {
     
 	if (videoCodec.type() == AMF_STRING) {
         if (videoCodec.as_string() == "avc1") {
-            //264
-            m_bHaveVideo = true;
+            //h264
+            m_iVideoCodecID = H264_CODEC_ID;
         } else {
             InfoL << "不支持RTMP视频格式:" << videoCodec.as_string();
         }
     }else if (videoCodec.type() != AMF_NULL){
-        if (videoCodec.as_integer() == 7) {
-            //264
-            m_bHaveVideo = true;
-        } else {
+        m_iVideoCodecID = videoCodec.as_integer();
+        if (m_iVideoCodecID != H264_CODEC_ID) {
             InfoL << "不支持RTMP视频格式:" << videoCodec.as_integer();
         }
     }
-    
-    
+
 	if (audioCodec.type() == AMF_STRING) {
 		if (audioCodec.as_string() == "mp4a") {
 			//aac
-			m_bHaveAudio = true;
+            m_iAudioCodecID = AAC_CODEC_ID;
 		} else {
 			InfoL << "不支持RTMP音频格式:" << audioCodec.as_string();
 		}
     }else if (audioCodec.type() != AMF_NULL) {
-        if (audioCodec.as_integer() == 10) {
-            //aac
-            m_bHaveAudio = true;
-        } else {
+        m_iAudioCodecID = audioCodec.as_integer();
+        if (m_iAudioCodecID != AAC_CODEC_ID) {
             InfoL << "不支持RTMP音频格式:" << audioCodec.as_integer();
         }
     }
-    
-    
-    if (!m_bHaveVideo && !m_bHaveAudio) {
-        throw std::runtime_error("不支持该RTMP媒体格式");
-    }
-    
 	onCheckMedia(val);
 }
 
 RtmpParser::~RtmpParser() {
-	// TODO Auto-generated destructor stub
 }
 
 bool RtmpParser::inputRtmp(const RtmpPacket::Ptr &pkt) {
-	switch (pkt->typeId) {
-	case MSG_VIDEO:
-		if (m_bHaveVideo) {
-			return inputVideo(pkt);
-		}
-		return false;
-	case MSG_AUDIO:
-		if (m_bHaveAudio) {
-			return inputAudio(pkt);
-		}
-		return false;
-	default:
-		return false;
-	}
+    switch (pkt->typeId) {
+        case MSG_VIDEO:{
+            if(m_iVideoCodecID == 0){
+                //未初始化视频
+                m_iVideoCodecID = pkt->getMediaType();
+                if(m_iVideoCodecID != H264_CODEC_ID){
+                    InfoL << "不支持RTMP视频格式:" << m_iVideoCodecID;
+                }
+            }
+            if(m_iVideoCodecID == H264_CODEC_ID){
+                return inputVideo(pkt);
+            }
+            return false;
+        }
+
+        case MSG_AUDIO: {
+            if(m_iAudioCodecID == 0){
+                //未初始化音频
+                m_iAudioCodecID = pkt->getMediaType();
+                if(m_iAudioCodecID != AAC_CODEC_ID){
+                    InfoL << "不支持RTMP音频格式:" << m_iAudioCodecID;
+                }
+            }
+            if (m_iAudioCodecID == AAC_CODEC_ID) {
+                return inputAudio(pkt);
+            }
+            return false;
+        }
+
+        default:
+            return false;
+    }
 }
 
 inline bool RtmpParser::inputVideo(const RtmpPacket::Ptr &pkt) {
diff --git a/src/Rtmp/RtmpParser.h b/src/Rtmp/RtmpParser.h
index c189f99d..ac687576 100644
--- a/src/Rtmp/RtmpParser.h
+++ b/src/Rtmp/RtmpParser.h
@@ -39,6 +39,9 @@ using namespace std;
 using namespace ZL::Util;
 using namespace ZL::Player;
 
+#define H264_CODEC_ID 7
+#define AAC_CODEC_ID 10
+
 namespace ZL {
 namespace Rtmp {
 
@@ -95,18 +98,31 @@ public:
 		return m_strAudioCfg;
 	}
 	bool containAudio() const override{
-		return m_bHaveAudio;
+        //音频只支持aac
+		return m_iAudioCodecID == AAC_CODEC_ID;
 	}
 	bool containVideo () const override{
-		return m_bHaveVideo;
+        //视频只支持264
+		return m_iVideoCodecID == H264_CODEC_ID;
 	}
 	bool isInited() const override{
-		if (m_bHaveAudio && !m_strAudioCfg.size()) {
+        if((m_iAudioCodecID | m_iVideoCodecID) == 0){
+            //音视频codec_id都未获取到，说明还未初始化成功
+            return false;
+        }
+        if((m_iAudioCodecID & m_iVideoCodecID) == 0 && m_ticker.elapsedTime() < 300){
+            //音视频codec_id有其一未获取到,且最少分析300ms才能断定没有音频或视频
+            return false;
+        }
+		if (m_iAudioCodecID && !m_strAudioCfg.size()) {
+            //如果音频是aac但是还未获取aac config ，则未初始化成功
 			return false;
 		}
-		if (m_bHaveVideo && !m_strSPS.size()) {
-			return false;
+		if (m_iVideoCodecID && !m_strSPS.size()) {
+            //如果视频是h264但是还未获取sps ，则未初始化成功
+            return false;
 		}
+        //初始化成功
 		return true;
 	}
 	float getDuration() const override{
@@ -136,13 +152,16 @@ private:
 	int m_iVideoWidth = 0;
 	int m_iVideoHeight = 0;
 	float m_fVideoFps = 0;
-	bool m_bHaveAudio = false;
-	bool m_bHaveVideo = false;
+    //音视频codec_id初始为0代表尚未获取到
+    int m_iAudioCodecID = 0;
+    int m_iVideoCodecID = 0;
 	float m_fDuration = 0;
-	function<void(const H264Frame &frame)> onVideo;
+    mutable Ticker m_ticker;
+    function<void(const H264Frame &frame)> onVideo;
 	function<void(const AdtsFrame &frame)> onAudio;
 	recursive_mutex m_mtxCB;
 
+
 };
 
 } /* namespace Rtmp */