diff --git a/player/FFMpegDecoder.cpp b/player/FFMpegDecoder.cpp
index 836bbc5a..d132a060 100644
--- a/player/FFMpegDecoder.cpp
+++ b/player/FFMpegDecoder.cpp
@@ -263,8 +263,8 @@ bool FFmpegDecoder::inputFrame_l(const Frame::Ptr &frame) {
     return decodeFrame(frame->data(), frame->size(), frame->dts(), frame->pts());
 }
 
-bool FFmpegDecoder::inputFrame(const Frame::Ptr &frame) {
-    if (!TaskManager::isEnabled()) {
+bool FFmpegDecoder::inputFrame(const Frame::Ptr &frame, bool may_async) {
+    if (!may_async || !TaskManager::isEnabled()) {
         return inputFrame_l(frame);
     }
     auto frame_cache = Frame::getCacheAbleFrame(frame);
diff --git a/player/FFMpegDecoder.h b/player/FFMpegDecoder.h
index a1073fd1..dba0b2e6 100644
--- a/player/FFMpegDecoder.h
+++ b/player/FFMpegDecoder.h
@@ -87,7 +87,7 @@ private:
     std::shared_ptr<thread> _thread;
 };
 
-class FFmpegDecoder : public FrameWriterInterface, private TaskManager {
+class FFmpegDecoder : private TaskManager {
 public:
     using Ptr = std::shared_ptr<FFmpegDecoder>;
     using onDec = function<void(const FFmpegFrame::Ptr &)>;
@@ -95,7 +95,7 @@ public:
     FFmpegDecoder(const Track::Ptr &track);
     ~FFmpegDecoder();
 
-    bool inputFrame(const Frame::Ptr &frame) override;
+    bool inputFrame(const Frame::Ptr &frame, bool may_async = true);
     void setOnDecode(onDec cb);
     void flush();
     const AVCodecContext *getContext() const;
diff --git a/player/test_player.cpp b/player/test_player.cpp
index 7619db22..995070c1 100644
--- a/player/test_player.cpp
+++ b/player/test_player.cpp
@@ -84,7 +84,7 @@ int main(int argc, char *argv[]) {
                 });
             });
             auto delegate = std::make_shared<FrameWriterInterfaceHelper>([decoder](const Frame::Ptr &frame) {
-                return decoder->inputFrame(frame);
+                return decoder->inputFrame(frame, false);
             });
             videoTrack->addDelegate(delegate);
         }
@@ -106,7 +106,7 @@ int main(int argc, char *argv[]) {
                 audio_player->playPCM((const char *) (pcm->get()->data[0]), len);
             });
             auto audio_delegate = std::make_shared<FrameWriterInterfaceHelper>( [decoder](const Frame::Ptr &frame) {
-                return decoder->inputFrame(frame);
+                return decoder->inputFrame(frame, false);
             });
             audioTrack->addDelegate(audio_delegate);
         }