覆盖时间戳需要明确参数指定，防止误判

src/MediaFile/Stamp.cpp

@@ -51,12 +51,9 @@ void DeltaStamp::setPlayBack(bool playback) {
     _playback = playback;
 }
 
-void Stamp::revise(int64_t dts, int64_t pts, int64_t &dts_out, int64_t &pts_out) {
-    if(!dts && !pts){
-        //没有时间戳，我们生成时间戳
-        pts = dts = _ticker.elapsedTime();
-    }else if(!pts){
-        //只是没有播放时间戳,使其赋值为解码时间戳
+void Stamp::revise(int64_t dts, int64_t pts, int64_t &dts_out, int64_t &pts_out,bool modifyStamp) {
+    if(!pts){
+        //没有播放时间戳,使其赋值为解码时间戳
         pts = dts;
     }
 
@@ -64,7 +61,7 @@ void Stamp::revise(int64_t dts, int64_t pts, int64_t &dts_out, int64_t &pts_out)
     int pts_dts_diff = pts - dts;
 
     //相对时间戳
-    _relativeStamp += deltaStamp(dts);
+    _relativeStamp += deltaStamp(modifyStamp ? _ticker.elapsedTime() : dts);
     dts_out = _relativeStamp;
 
     //////////////以下是播放时间戳的计算//////////////////

src/MediaFile/Stamp.h

@@ -67,8 +67,9 @@ public:
      * @param pts 输入pts，如果为0则等于dts
      * @param dts_out 输出dts
      * @param pts_out 输出pts
+     * @param modifyStamp 是否用系统时间戳覆盖
      */
-    void revise(int64_t dts, int64_t pts, int64_t &dts_out, int64_t &pts_out);
+    void revise(int64_t dts, int64_t pts, int64_t &dts_out, int64_t &pts_out,bool modifyStamp = false);
 
     /**
      * 再设置相对时间戳，用于seek用

src/Rtmp/RtmpSession.cpp

@@ -486,7 +486,7 @@ 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);
+            _stamp[chunkData.typeId % 2].revise(0, 0, dts_out, dts_out, true);
             chunkData.timeStamp = dts_out;
         }
         if(!_metadata_got && !chunkData.isCfgFrame()){

src/Rtsp/RtspSession.cpp

@@ -932,7 +932,7 @@ 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);
+        _stamp[trackidx].revise(0, 0, dts_out, dts_out, true);
         rtppt->timeStamp = dts_out;
     }
 	_pushSrc->onWrite(rtppt, false);