diff --git a/Android/app/src/main/cpp/native-lib.cpp b/Android/app/src/main/cpp/native-lib.cpp
index 12e95eb6..79538cfd 100644
--- a/Android/app/src/main/cpp/native-lib.cpp
+++ b/Android/app/src/main/cpp/native-lib.cpp
@@ -203,7 +203,7 @@ JNI_API(jlong,createMediaPlayer,jstring url,jobject callback){
         emitEvent((jobject)globalWeakRef,"onShutdown","(ILjava/lang/String;)V",(jint)ex.getErrCode(),env->NewStringUTF(ex.what()));
     });
 
-    (*player)[Client::kRtpType] = Rtsp::RTP_UDP;
+    (*player)[Client::kRtpType] = Rtsp::RTP_TCP;
     player->play(stringFromJstring(env,url));
 
     return (jlong)(ret);
diff --git a/src/Rtsp/RtpReceiver.cpp b/src/Rtsp/RtpReceiver.cpp
index 08adcef2..8dd0c929 100644
--- a/src/Rtsp/RtpReceiver.cpp
+++ b/src/Rtsp/RtpReceiver.cpp
@@ -45,9 +45,9 @@ RtpReceiver::~RtpReceiver() {}
 bool RtpReceiver::handleOneRtp(int iTrackidx,SdpTrack::Ptr &track, unsigned char *pucData, unsigned int uiLen) {
     auto pt_ptr=_pktPool.obtain();
     auto &rtppt=*pt_ptr;
-    rtppt.interleaved = track->_interleaved;
-    rtppt.length = uiLen + 4;
+    auto length = uiLen + 4;
 
+    rtppt.interleaved = track->_interleaved;
     rtppt.mark = pucData[1] >> 7;
     rtppt.PT = pucData[1] & 0x7F;
     //序列号
@@ -81,12 +81,8 @@ bool RtpReceiver::handleOneRtp(int iTrackidx,SdpTrack::Ptr &track, unsigned char
     }
     _aui32SsrcErrorCnt[iTrackidx] = 0;
 
-    rtppt.payload[0] = '$';
-    rtppt.payload[1] = rtppt.interleaved;
-    rtppt.payload[2] = uiLen >> 8;
-    rtppt.payload[3] = (uiLen & 0x00FF);
-
-    rtppt.offset 	= 16;
+    //获取rtp中媒体数据偏移量
+    rtppt.offset 	= 12 + 4;
     int csrc     	= pucData[0] & 0x0f;
     int ext      	= pucData[0] & 0x10;
     rtppt.offset 	+= 4 * csrc;
@@ -99,16 +95,20 @@ bool RtpReceiver::handleOneRtp(int iTrackidx,SdpTrack::Ptr &track, unsigned char
         rtppt.offset += ext;
     }
 
-    if(rtppt.length - rtppt.offset <= 0){
-        WarnL << "无有效负载的rtp包:" << rtppt.length << "<=" << (int)rtppt.offset;
+    if(length - rtppt.offset <= 0){
+        WarnL << "无有效负载的rtp包:" << length << "<=" << (int)rtppt.offset;
         return false;
     }
 
-    if(uiLen > sizeof(rtppt.payload) - 4){
-        WarnL << "超长的rtp包:" << uiLen << ">" << sizeof(rtppt.payload) - 4;
-        return false;
-    }
-    memcpy(rtppt.payload + 4, pucData, uiLen);
+    rtppt.setCapacity(length);
+    rtppt.setSize(length);
+    uint8_t *payload_ptr = (uint8_t *)rtppt.data();
+    payload_ptr[0] = '$';
+    payload_ptr[1] = rtppt.interleaved;
+    payload_ptr[2] = uiLen >> 8;
+    payload_ptr[3] = (uiLen & 0x00FF);
+    //拷贝rtp负载
+    memcpy(payload_ptr + 4, pucData, uiLen);
 
     /////////////////////////////////RTP排序逻辑///////////////////////////////////
     if(rtppt.sequence != _aui16LastSeq[iTrackidx] + 1 && _aui16LastSeq[iTrackidx] != 0){
diff --git a/src/Rtsp/RtspPlayer.cpp b/src/Rtsp/RtspPlayer.cpp
index ee641d51..6853116d 100644
--- a/src/Rtsp/RtspPlayer.cpp
+++ b/src/Rtsp/RtspPlayer.cpp
@@ -732,7 +732,7 @@ void RtspPlayer::onRecvRTP_l(const RtpPacket::Ptr &pkt, const SdpTrack::Ptr &tra
         //send rtcp every 5 second
         counter.lastTimeStamp = counter.timeStamp;
         //直接保存网络字节序
-        memcpy(&counter.timeStamp, pkt->payload + 8 , 4);
+        memcpy(&counter.timeStamp, pkt->data() + 8 , 4);
         if(counter.lastTimeStamp != 0){
             sendReceiverReport(_eType == Rtsp::RTP_TCP,iTrackIndex);
             ticker.resetTime();
diff --git a/src/Rtsp/RtspSession.h b/src/Rtsp/RtspSession.h
index 6d5b064f..433c13f7 100644
--- a/src/Rtsp/RtspSession.h
+++ b/src/Rtsp/RtspSession.h
@@ -57,10 +57,10 @@ public:
     virtual ~BufferRtp(){}
 
     char *data() const override {
-        return (char *)_rtp->payload + _offset;
+        return (char *)_rtp->data() + _offset;
     }
     uint32_t size() const override {
-        return _rtp->length - _offset;
+        return _rtp->size() - _offset;
     }
 private:
     RtpPacket::Ptr _rtp;
diff --git a/src/RtspMuxer/AACRtpCodec.cpp b/src/RtspMuxer/AACRtpCodec.cpp
index 58474324..a05f8228 100644
--- a/src/RtspMuxer/AACRtpCodec.cpp
+++ b/src/RtspMuxer/AACRtpCodec.cpp
@@ -105,10 +105,10 @@ bool AACRtpDecoder::inputRtp(const RtpPacket::Ptr &rtppack, bool key_pos) {
     RtpCodec::inputRtp(rtppack, false);
 
 	// 获取rtp数据长度
-    int length = rtppack->length - rtppack->offset;
+    int length = rtppack->size() - rtppack->offset;
 
 	// 获取rtp数据
-	const uint8_t *rtp_packet_buf = (uint8_t *)rtppack->payload + rtppack->offset;
+	const uint8_t *rtp_packet_buf = (uint8_t *)rtppack->data() + rtppack->offset;
 	
 	do
 	{
diff --git a/src/RtspMuxer/H264RtpCodec.cpp b/src/RtspMuxer/H264RtpCodec.cpp
index 09260793..5ebd3100 100644
--- a/src/RtspMuxer/H264RtpCodec.cpp
+++ b/src/RtspMuxer/H264RtpCodec.cpp
@@ -91,8 +91,8 @@ bool H264RtpDecoder::decodeRtp(const RtpPacket::Ptr &rtppack) {
      * Type==8:PPS frame
      */
 
-    const uint8_t *frame = (uint8_t *) rtppack->payload + rtppack->offset;
-    int length = rtppack->length - rtppack->offset;
+    const uint8_t *frame = (uint8_t *) rtppack->data() + rtppack->offset;
+    int length = rtppack->size() - rtppack->offset;
     NALU nal;
     MakeNalu(*frame, nal);
 
diff --git a/src/RtspMuxer/H265RtpCodec.cpp b/src/RtspMuxer/H265RtpCodec.cpp
index 343b7ef8..19d81b7f 100644
--- a/src/RtspMuxer/H265RtpCodec.cpp
+++ b/src/RtspMuxer/H265RtpCodec.cpp
@@ -82,8 +82,8 @@ bool H265RtpDecoder::inputRtp(const RtpPacket::Ptr &rtp, bool key_pos) {
 }
 
 bool H265RtpDecoder::decodeRtp(const RtpPacket::Ptr &rtppack) {
-    const uint8_t *frame = (uint8_t *) rtppack->payload + rtppack->offset;
-    int length = rtppack->length - rtppack->offset;
+    const uint8_t *frame = (uint8_t *) rtppack->data() + rtppack->offset;
+    int length = rtppack->size() - rtppack->offset;
     int nal = H265_TYPE(frame[0]);
 
     if (nal > 50){
diff --git a/src/RtspMuxer/RtpCodec.cpp b/src/RtspMuxer/RtpCodec.cpp
index 5b0b3a14..fe1b6a5a 100644
--- a/src/RtspMuxer/RtpCodec.cpp
+++ b/src/RtspMuxer/RtpCodec.cpp
@@ -35,7 +35,10 @@ RtpPacket::Ptr RtpInfo::makeRtp(TrackType type, const void* data, unsigned int l
     uint32_t sc = htonl(_ui32Ssrc);
 
     auto rtppkt = ResourcePoolHelper<RtpPacket>::obtainObj();
-    unsigned char *pucRtp = rtppkt->payload;
+    rtppkt->setCapacity(len + 16);
+    rtppkt->setSize(len + 16);
+
+    unsigned char *pucRtp = (unsigned char *)rtppkt->data();
     pucRtp[0] = '$';
     pucRtp[1] = _ui8Interleaved;
     pucRtp[2] = ui16RtpLen >> 8;
@@ -52,7 +55,6 @@ RtpPacket::Ptr RtpInfo::makeRtp(TrackType type, const void* data, unsigned int l
     rtppkt->PT = _ui8PlayloadType;
     rtppkt->interleaved = _ui8Interleaved;
     rtppkt->mark = mark;
-    rtppkt->length = len + 16;
     rtppkt->sequence = _ui16Sequence;
     rtppkt->timeStamp = uiStamp;
     rtppkt->ssrc = _ui32Ssrc;
diff --git a/src/RtspMuxer/RtpCodec.h b/src/RtspMuxer/RtpCodec.h
index 3e172477..49c96544 100644
--- a/src/RtspMuxer/RtpCodec.h
+++ b/src/RtspMuxer/RtpCodec.h
@@ -35,27 +35,18 @@ using namespace toolkit;
 
 namespace mediakit{
 
-class RtpPacket : public Buffer{
+class RtpPacket : public BufferRaw{
 public:
     typedef std::shared_ptr<RtpPacket> Ptr;
     uint8_t interleaved;
     uint8_t PT;
     bool mark;
-    uint32_t length;
     //时间戳，单位毫秒
     uint32_t timeStamp;
     uint16_t sequence;
     uint32_t ssrc;
-    uint8_t payload[1604];
     uint8_t offset;
     TrackType type;
-
-    char *data() const override {
-        return (char *)payload;
-    }
-    uint32_t size() const override {
-        return length;
-    }
 };
 
 class RtpRingInterface {