diff --git a/src/Rtp/RtpProcess.cpp b/src/Rtp/RtpProcess.cpp
index aa9261a8..e328063d 100644
--- a/src/Rtp/RtpProcess.cpp
+++ b/src/Rtp/RtpProcess.cpp
@@ -33,34 +33,6 @@
 
 namespace mediakit{
 
-/**
- * 合并一些时间戳相同的frame
- */
-class FrameMerger {
-public:
-    FrameMerger() = default;
-    virtual ~FrameMerger() = default;
-
-    void inputFrame(const Frame::Ptr &frame,const function<void(uint32_t dts,uint32_t pts,const Buffer::Ptr &buffer)> &cb){
-        if (!_frameCached.empty() && _frameCached.back()->dts() != frame->dts()) {
-            Frame::Ptr back = _frameCached.back();
-            Buffer::Ptr merged_frame = back;
-            if(_frameCached.size() != 1){
-                string merged;
-                _frameCached.for_each([&](const Frame::Ptr &frame){
-                    merged.append(frame->data(),frame->size());
-                });
-                merged_frame = std::make_shared<BufferString>(std::move(merged));
-            }
-            cb(back->dts(),back->pts(),merged_frame);
-            _frameCached.clear();
-        }
-        _frameCached.emplace_back(Frame::getCacheAbleFrame(frame));
-    }
-private:
-    List<Frame::Ptr> _frameCached;
-};
-
 string printSSRC(uint32_t ui32Ssrc) {
     char tmp[9] = { 0 };
     ui32Ssrc = htonl(ui32Ssrc);
@@ -118,7 +90,6 @@ RtpProcess::RtpProcess(uint32_t ssrc) {
             });
         }
     }
-    _merger = std::make_shared<FrameMerger>();
 }
 
 RtpProcess::~RtpProcess() {
@@ -205,10 +176,8 @@ void RtpProcess::onPSDecode(int stream,
             if(_save_file_video){
                 fwrite((uint8_t *)data,bytes, 1, _save_file_video.get());
             }
-            auto frame = std::make_shared<H264FrameNoCacheAble>((char *) data, bytes, dts, pts,0);
-            _merger->inputFrame(frame,[this](uint32_t dts, uint32_t pts, const Buffer::Ptr &buffer) {
-                _muxer->inputFrame(std::make_shared<H264FrameNoCacheAble>(buffer->data(), buffer->size(), dts, pts,4));
-            });
+            auto frame = std::make_shared<H264FrameNoCacheAble>((char *) data, bytes, dts, pts,4);
+            _muxer->inputFrame(frame);
             break;
         }
 
@@ -227,10 +196,8 @@ void RtpProcess::onPSDecode(int stream,
             if(_save_file_video){
                 fwrite((uint8_t *)data,bytes, 1, _save_file_video.get());
             }
-            auto frame = std::make_shared<H265FrameNoCacheAble>((char *) data, bytes, dts, pts, 0);
-            _merger->inputFrame(frame,[this](uint32_t dts, uint32_t pts, const Buffer::Ptr &buffer) {
-                _muxer->inputFrame(std::make_shared<H265FrameNoCacheAble>(buffer->data(), buffer->size(), dts, pts, 4));
-            });
+            auto frame = std::make_shared<H265FrameNoCacheAble>((char *) data, bytes, dts, pts, 4);
+            _muxer->inputFrame(frame);
             break;
         }
 
diff --git a/src/Rtp/RtpProcess.h b/src/Rtp/RtpProcess.h
index 42f8f20a..08d56b6b 100644
--- a/src/Rtp/RtpProcess.h
+++ b/src/Rtp/RtpProcess.h
@@ -40,7 +40,6 @@ namespace mediakit{
 
 string printSSRC(uint32_t ui32Ssrc);
 
-class FrameMerger;
 class RtpProcess : public RtpReceiver , public RtpDecoder , public PSDecoder {
 public:
     typedef std::shared_ptr<RtpProcess> Ptr;
@@ -71,7 +70,6 @@ private:
     int _codecid_video = 0;
     int _codecid_audio = 0;
     MultiMediaSourceMuxer::Ptr _muxer;
-    std::shared_ptr<FrameMerger> _merger;
     Ticker _last_rtp_time;
     map<int,Stamp> _stamps;
 };