diff --git a/src/MediaFile/Stamp.cpp b/src/MediaFile/Stamp.cpp
index ab77a1bf..4474fe45 100644
--- a/src/MediaFile/Stamp.cpp
+++ b/src/MediaFile/Stamp.cpp
@@ -60,8 +60,11 @@ void Stamp::revise(int64_t dts, int64_t pts, int64_t &dts_out, int64_t &pts_out,
     //pts和dts的差值
     int pts_dts_diff = pts - dts;
 
-    //相对时间戳
-    _relativeStamp += deltaStamp(modifyStamp ? _ticker.elapsedTime() : dts);
+    if(_last_dts != dts){
+        //时间戳发生变更
+        _relativeStamp += deltaStamp(modifyStamp ? _ticker.elapsedTime() : dts);
+        _last_dts = dts;
+    }
     dts_out = _relativeStamp;
 
     //////////////以下是播放时间戳的计算//////////////////
diff --git a/src/MediaFile/Stamp.h b/src/MediaFile/Stamp.h
index 82458fda..09e77338 100644
--- a/src/MediaFile/Stamp.h
+++ b/src/MediaFile/Stamp.h
@@ -84,6 +84,7 @@ public:
     int64_t getRelativeStamp() const ;
 private:
     int64_t _relativeStamp = 0;
+    int64_t _last_dts = -1;
     SmoothTicker _ticker;
 };
 
diff --git a/src/Rtmp/RtmpSession.cpp b/src/Rtmp/RtmpSession.cpp
index e946d275..671ff101 100644
--- a/src/Rtmp/RtmpSession.cpp
+++ b/src/Rtmp/RtmpSession.cpp
@@ -493,7 +493,7 @@ void RtmpSession::onRtmpChunk(RtmpPacket &chunkData) {
 		GET_CONFIG(bool,rtmp_modify_stamp,Rtmp::kModifyStamp);
         if(rtmp_modify_stamp){
             int64_t dts_out;
-            _stamp[chunkData.typeId % 2].revise(0, 0, dts_out, dts_out, true);
+            _stamp[chunkData.typeId % 2].revise(chunkData.timeStamp, chunkData.timeStamp, dts_out, dts_out, true);
             chunkData.timeStamp = dts_out;
         }
         if(!_metadata_got && !chunkData.isCfgFrame()){
diff --git a/src/Rtsp/RtspSession.cpp b/src/Rtsp/RtspSession.cpp
index c06e204a..cb138308 100644
--- a/src/Rtsp/RtspSession.cpp
+++ b/src/Rtsp/RtspSession.cpp
@@ -940,7 +940,7 @@ void RtspSession::onRtpSorted(const RtpPacket::Ptr &rtppt, int trackidx) {
     GET_CONFIG(bool,modify_stamp,Rtsp::kModifyStamp);
     if(modify_stamp){
         int64_t dts_out;
-        _stamp[trackidx].revise(0, 0, dts_out, dts_out, true);
+        _stamp[trackidx].revise(rtppt->timeStamp, rtppt->timeStamp, dts_out, dts_out, true);
         rtppt->timeStamp = dts_out;
     }
 	_pushSrc->onWrite(rtppt, false);