diff --git a/src/Http/HlsPlayer.cpp b/src/Http/HlsPlayer.cpp
index e20607f4..305b5f43 100644
--- a/src/Http/HlsPlayer.cpp
+++ b/src/Http/HlsPlayer.cpp
@@ -241,11 +241,6 @@ void HlsPlayer::playDelay() {
 
 void HlsDemuxer::start(const EventPoller::Ptr &poller, TrackListener *listener) {
     _frame_cache.clear();
-    _stamp[TrackAudio].setRelativeStamp(0);
-    _stamp[TrackVideo].setRelativeStamp(0);
-    _stamp[TrackAudio].syncTo(_stamp[TrackVideo]);
-    setPlayPosition(0);
-
     _delegate.setTrackListener(listener);
 
     //每50毫秒执行一次
@@ -267,11 +262,12 @@ bool HlsDemuxer::inputFrame(const Frame::Ptr &frame) {
         return true;
     }
 
-    //计算相对时间戳
-    int64_t dts, pts;
-    _stamp[frame->getTrackType()].revise(frame->dts(), frame->pts(), dts, pts);
+    if (_frame_cache.empty()) {
+        //设置当前播放位置时间戳
+        setPlayPosition(frame->dts());
+    }
     //根据时间戳缓存frame
-    _frame_cache.emplace(dts, Frame::getCacheAbleFrame(frame));
+    _frame_cache.emplace(frame->dts(), Frame::getCacheAbleFrame(frame));
 
     if (getBufferMS() > 30 * 1000) {
         //缓存超过30秒，强制消费至15秒(减少延时或内存占用)
diff --git a/src/Http/HlsPlayer.h b/src/Http/HlsPlayer.h
index a520137f..dd69e3bc 100644
--- a/src/Http/HlsPlayer.h
+++ b/src/Http/HlsPlayer.h
@@ -19,10 +19,7 @@
 
 namespace mediakit {
 
-class HlsDemuxer
-    : public MediaSinkInterface
-    , public TrackSource
-    , public std::enable_shared_from_this<HlsDemuxer> {
+class HlsDemuxer : public MediaSinkInterface , public TrackSource, public std::enable_shared_from_this<HlsDemuxer> {
 public:
     HlsDemuxer() = default;
     ~HlsDemuxer() override { _timer = nullptr; }
@@ -43,7 +40,6 @@ private:
 private:
     int64_t _ticker_offset = 0;
     toolkit::Ticker _ticker;
-    Stamp _stamp[2];
     toolkit::Timer::Ptr _timer;
     MediaSinkDelegate _delegate;
     std::multimap<int64_t, Frame::Ptr> _frame_cache;