diff --git a/src/Extension/Factory.cpp b/src/Extension/Factory.cpp
index 1e7a6284..92771f38 100644
--- a/src/Extension/Factory.cpp
+++ b/src/Extension/Factory.cpp
@@ -118,7 +118,7 @@ RtpCodec::Ptr Factory::getRtpEncoderBySdp(const Sdp::Ptr &sdp) {
         case CodecH265 : return std::make_shared<H265RtpEncoder>(ssrc,mtu,sample_rate,pt,interleaved);
         case CodecAAC : return std::make_shared<AACRtpEncoder>(ssrc,mtu,sample_rate,pt,interleaved);
         case CodecG711A :
-        case CodecG711U : return std::make_shared<G711RtpEncoder>(ssrc, mtu, sample_rate, pt, interleaved);
+        case CodecG711U : return std::make_shared<G711RtpEncoder>(codec_id, ssrc, mtu, sample_rate, pt, interleaved);
         default : WarnL << "暂不支持该CodecId:" << codec_id; return nullptr;
     }
 }
@@ -129,7 +129,7 @@ RtpCodec::Ptr Factory::getRtpDecoderByTrack(const Track::Ptr &track) {
         case CodecH265 : return std::make_shared<H265RtpDecoder>();
         case CodecAAC : return std::make_shared<AACRtpDecoder>(track->clone());
         case CodecG711A :
-        case CodecG711U : return std::make_shared<G711RtpDecoder>(track->clone());
+        case CodecG711U : return std::make_shared<G711RtpDecoder>(track->getCodecId());
         default : WarnL << "暂不支持该CodecId:" << track->getCodecName(); return nullptr;
     }
 }
diff --git a/src/Extension/G711Rtp.cpp b/src/Extension/G711Rtp.cpp
index 8e7a5cf8..48238db5 100644
--- a/src/Extension/G711Rtp.cpp
+++ b/src/Extension/G711Rtp.cpp
@@ -12,8 +12,8 @@
 
 namespace mediakit{
 
-G711RtpDecoder::G711RtpDecoder(const Track::Ptr &track){
-    _codecid = track->getCodecId();
+G711RtpDecoder::G711RtpDecoder(CodecId codecid){
+    _codecid = codecid;
     _frame = obtainFrame();
 }
 
@@ -59,16 +59,10 @@ void G711RtpDecoder::onGetG711(const G711Frame::Ptr &frame) {
 
 /////////////////////////////////////////////////////////////////////////////////////
 
-G711RtpEncoder::G711RtpEncoder(uint32_t ui32Ssrc,
-                               uint32_t ui32MtuSize,
-                               uint32_t ui32SampleRate,
-                               uint8_t ui8PayloadType,
-                               uint8_t ui8Interleaved) :
-        RtpInfo(ui32Ssrc,
-                ui32MtuSize,
-                ui32SampleRate,
-                ui8PayloadType,
-                ui8Interleaved) {
+G711RtpEncoder::G711RtpEncoder(CodecId codecid, uint32_t ui32Ssrc, uint32_t ui32MtuSize,
+                               uint32_t ui32SampleRate, uint8_t ui8PayloadType, uint8_t ui8Interleaved) :
+                               G711RtpDecoder(codecid),
+                               RtpInfo(ui32Ssrc, ui32MtuSize, ui32SampleRate, ui8PayloadType, ui8Interleaved) {
 }
 
 void G711RtpEncoder::inputFrame(const Frame::Ptr &frame) {
diff --git a/src/Extension/G711Rtp.h b/src/Extension/G711Rtp.h
index f76f4a70..aca08e6d 100644
--- a/src/Extension/G711Rtp.h
+++ b/src/Extension/G711Rtp.h
@@ -21,7 +21,7 @@ class G711RtpDecoder : public RtpCodec , public ResourcePoolHelper<G711Frame> {
 public:
     typedef std::shared_ptr<G711RtpDecoder> Ptr;
 
-    G711RtpDecoder(const Track::Ptr &track);
+    G711RtpDecoder(CodecId codecid);
     ~G711RtpDecoder() {}
 
     /**
@@ -35,9 +35,6 @@ public:
         return _codecid;
     }
 
-protected:
-    G711RtpDecoder() {}
-
 private:
     void onGetG711(const G711Frame::Ptr &frame);
     G711Frame::Ptr obtainFrame();
@@ -61,7 +58,8 @@ public:
      * @param ui8PayloadType pt类型
      * @param ui8Interleaved rtsp interleaved 值
      */
-    G711RtpEncoder(uint32_t ui32Ssrc,
+    G711RtpEncoder(CodecId codecid,
+                   uint32_t ui32Ssrc,
                    uint32_t ui32MtuSize,
                    uint32_t ui32SampleRate,
                    uint8_t ui8PayloadType = 0,