diff --git a/framework/demuxer/IDemuxer.cpp b/framework/demuxer/IDemuxer.cpp
index 5cb85121d..0344dfe8c 100644
--- a/framework/demuxer/IDemuxer.cpp
+++ b/framework/demuxer/IDemuxer.cpp
@@ -30,7 +30,7 @@ namespace Cicada {
         mInterruptCb = inter;
     }
 
-    int IDemuxer::GetStreamMeta(unique_ptr<streamMeta> &meta, int index, bool sub)
+    int IDemuxer::GetStreamMeta(unique_ptr<streamMeta> &meta, int index, bool sub) const
     {
         Stream_meta Meta;
         int ret = GetStreamMeta(&Meta, index, sub);
diff --git a/framework/demuxer/IDemuxer.h b/framework/demuxer/IDemuxer.h
index b660f485a..fb5074229 100644
--- a/framework/demuxer/IDemuxer.h
+++ b/framework/demuxer/IDemuxer.h
@@ -97,9 +97,10 @@ namespace Cicada {
 
         virtual int GetSourceMeta(Source_meta **meta) const = 0;
 
-        attribute_deprecated virtual int GetStreamMeta(Stream_meta *meta, int index, bool sub) = 0;
+        attribute_deprecated
+        virtual int GetStreamMeta(Stream_meta *meta, int index, bool sub) const = 0;
 
-        virtual int GetStreamMeta(unique_ptr<streamMeta> &meta, int index, bool sub);
+        virtual int GetStreamMeta(unique_ptr<streamMeta> &meta, int index, bool sub) const;
 
         virtual int OpenStream(int index) = 0;
 
diff --git a/framework/demuxer/avFormatDemuxer.cpp b/framework/demuxer/avFormatDemuxer.cpp
index a53b5f44f..b615fb397 100644
--- a/framework/demuxer/avFormatDemuxer.cpp
+++ b/framework/demuxer/avFormatDemuxer.cpp
@@ -435,9 +435,6 @@ namespace Cicada {
         }
 
         if (!bsfName.empty()) {
-#if AF_HAVE_PTHREAD
-            std::unique_lock<std::mutex> uLock(mCtxMutex);
-#endif
             mStreamCtxMap[index]->bsf = unique_ptr<IAVBSF>(IAVBSFFactory::create(bsfName));
             ret = mStreamCtxMap[index]->bsf->init(bsfName, mCtx->streams[index]->codecpar);
 
@@ -540,12 +537,9 @@ namespace Cicada {
         return AVDictionary2SourceMeta(meta, mCtx->metadata);
     }
 
-    int avFormatDemuxer::GetStreamMeta(Stream_meta *meta, int index, bool sub)
+    int avFormatDemuxer::GetStreamMeta(Stream_meta *meta, int index, bool sub) const
     {
-#if AF_HAVE_PTHREAD
-        std::unique_lock<std::mutex> uLock(mCtxMutex);
-#endif
-        if (index < 0 || mCtx == nullptr || index > mCtx->nb_streams) {
+        if (index < 0 || index > mCtx->nb_streams) {
             return -EINVAL;
         }
 
diff --git a/framework/demuxer/avFormatDemuxer.h b/framework/demuxer/avFormatDemuxer.h
index 949f25761..5a15a93ed 100644
--- a/framework/demuxer/avFormatDemuxer.h
+++ b/framework/demuxer/avFormatDemuxer.h
@@ -52,7 +52,7 @@ namespace Cicada {
 
         int GetSourceMeta(Source_meta **meta) const override;
 
-        int GetStreamMeta(Stream_meta *meta, int index, bool sub) override;
+        int GetStreamMeta(Stream_meta *meta, int index, bool sub) const override;
 
         void Start() override;
 
@@ -143,7 +143,6 @@ namespace Cicada {
         std::mutex mQueLock{};
         std::condition_variable mQueCond{};
         atomic <int64_t> mError{0};
-        std::mutex mCtxMutex{};
 #endif
 
     };
diff --git a/framework/demuxer/avFormatSubtitleDemuxer.cpp b/framework/demuxer/avFormatSubtitleDemuxer.cpp
index 748a1e9da..48de91d76 100644
--- a/framework/demuxer/avFormatSubtitleDemuxer.cpp
+++ b/framework/demuxer/avFormatSubtitleDemuxer.cpp
@@ -85,7 +85,7 @@ namespace Cicada {
         return 0;
     }
 
-    int avFormatSubtitleDemuxer::GetStreamMeta(Stream_meta *meta, int index, bool sub)
+    int avFormatSubtitleDemuxer::GetStreamMeta(Stream_meta *meta, int index, bool sub) const
     {
         if (index < 0 || index > mCtx->nb_streams) {
             return -EINVAL;
diff --git a/framework/demuxer/avFormatSubtitleDemuxer.h b/framework/demuxer/avFormatSubtitleDemuxer.h
index acfe3af88..e81eb81c3 100644
--- a/framework/demuxer/avFormatSubtitleDemuxer.h
+++ b/framework/demuxer/avFormatSubtitleDemuxer.h
@@ -29,7 +29,7 @@ namespace Cicada {
 
         int GetSourceMeta(Source_meta **meta) const override;
 
-        int GetStreamMeta(Stream_meta *meta, int index, bool sub) override;
+        int GetStreamMeta(Stream_meta *meta, int index, bool sub) const override;
 
         void Start() override;
 
diff --git a/framework/demuxer/play_list/HLSStream.cpp b/framework/demuxer/play_list/HLSStream.cpp
index 35ad8ccfb..34f4c062c 100644
--- a/framework/demuxer/play_list/HLSStream.cpp
+++ b/framework/demuxer/play_list/HLSStream.cpp
@@ -419,16 +419,14 @@ namespace Cicada {
             std::lock_guard<std::mutex> lock(mHLSMutex);
             mPDemuxer = std::unique_ptr<demuxer_service>(new demuxer_service(nullptr));
         }
-        {
-            std::lock_guard<std::mutex> lock(mHLSMutex);
-            mPDemuxer->setOptions(this->mOpts);
-            unique_ptr<DemuxerMeta> demuxerMeta = unique_ptr<DemuxerMeta>(new DemuxerMeta());
-            demuxerMeta->ownerUrl = mPTracker->getPlayListUri();
-            mPDemuxer->setDemuxerMeta(demuxerMeta);
-            mPDemuxer->SetDataCallBack(read_callback, this, nullptr, nullptr, nullptr);
-            mPDemuxer->setSampleDecryptor(this->mSampeAesDecrypter.get());
-            ret = mPDemuxer->createDemuxer(demuxer_type_unknown);
-        }
+
+        mPDemuxer->setOptions(this->mOpts);
+        unique_ptr<DemuxerMeta> demuxerMeta = unique_ptr<DemuxerMeta>(new DemuxerMeta());
+        demuxerMeta->ownerUrl = mPTracker->getPlayListUri();
+        mPDemuxer->setDemuxerMeta(demuxerMeta);
+        mPDemuxer->SetDataCallBack(read_callback, this, nullptr, nullptr, nullptr);
+        mPDemuxer->setSampleDecryptor(this->mSampeAesDecrypter.get());
+        ret = mPDemuxer->createDemuxer(demuxer_type_unknown);
 
         if (ret < 0) {
             return ret;
diff --git a/framework/demuxer/play_list/playList_demuxer.cpp b/framework/demuxer/play_list/playList_demuxer.cpp
index 619641aae..f32a3784b 100644
--- a/framework/demuxer/play_list/playList_demuxer.cpp
+++ b/framework/demuxer/play_list/playList_demuxer.cpp
@@ -127,7 +127,7 @@ namespace Cicada {
         return 0;
     }
 
-    int playList_demuxer::GetStreamMeta(Stream_meta *meta, int index, bool sub)
+    int playList_demuxer::GetStreamMeta(Stream_meta *meta, int index, bool sub) const
     {
         if (mPPlaylistManager) {
             return mPPlaylistManager->GetStreamMeta(meta, index, sub);
diff --git a/framework/demuxer/play_list/playList_demuxer.h b/framework/demuxer/play_list/playList_demuxer.h
index b9715de2b..f7570e689 100644
--- a/framework/demuxer/play_list/playList_demuxer.h
+++ b/framework/demuxer/play_list/playList_demuxer.h
@@ -58,7 +58,7 @@ namespace Cicada{
         
         int GetSourceMeta(Source_meta **meta) const override;
 
-        int GetStreamMeta(Stream_meta *meta, int index, bool sub) override;
+        int GetStreamMeta(Stream_meta *meta, int index, bool sub) const override;
 
         int OpenStream(int index) override;
 
diff --git a/framework/render/audio/filterAudioRender.cpp b/framework/render/audio/filterAudioRender.cpp
index 3855a32e1..f636c792b 100644
--- a/framework/render/audio/filterAudioRender.cpp
+++ b/framework/render/audio/filterAudioRender.cpp
@@ -240,7 +240,7 @@ namespace Cicada {
             ret = device_write(mRenderFrame);
 
             if (ret == -EAGAIN) {
-                unique_lock<mutex> lock(mFrameQueMutex);
+
                 if (mFrameQue.size() == mMaxQueSize) {
                     mMaxQueSize = std::max(MIN_INPUT_BUFFER_COUNT, mMaxQueSize.load() - 1);
                 }
diff --git a/framework/render/video/vsync/timedVSync.h b/framework/render/video/vsync/timedVSync.h
index b44031add..e833b90c1 100644
--- a/framework/render/video/vsync/timedVSync.h
+++ b/framework/render/video/vsync/timedVSync.h
@@ -35,7 +35,8 @@ class timedVSync : public IVSync {
     float mHz{0};
     std::unique_ptr<afThread> mThread{};
     af_clock mClock;
-    std::atomic_bool mBPaused{false};
+    bool mBPaused{false};
+
 };