diff --git a/Core/VideoDecoder.cpp b/Core/VideoDecoder.cpp
index 4acd47ec..7b48ab1b 100644
--- a/Core/VideoDecoder.cpp
+++ b/Core/VideoDecoder.cpp
@@ -135,6 +135,8 @@ void VideoDecoder::StartThread()
 		_stopFlag = false;
 		_frameChanged = false;
 		_frameCount = 0;
+		_waitForFrame.Reset();
+		_waitForRender.Reset();
 		Instance->_decodeThread.reset(new thread(&VideoDecoder::DecodeThread, Instance.get()));
 		Instance->_renderThread.reset(new thread(&VideoDecoder::RenderThread, Instance.get()));
 	}
diff --git a/Utilities/AutoResetEvent.cpp b/Utilities/AutoResetEvent.cpp
index 94abd7f1..329bcf82 100644
--- a/Utilities/AutoResetEvent.cpp
+++ b/Utilities/AutoResetEvent.cpp
@@ -25,6 +25,12 @@ void AutoResetEvent::Wait(int timeoutDelay)
 	_signaled = false;
 }
 
+void AutoResetEvent::Reset()
+{
+	std::unique_lock<std::mutex> lock(_mutex);
+	_signaled = false;
+}
+
 void AutoResetEvent::Signal()
 {
 	std::unique_lock<std::mutex> lock(_mutex);
diff --git a/Utilities/AutoResetEvent.h b/Utilities/AutoResetEvent.h
index 0b8bf7b9..b272f1db 100644
--- a/Utilities/AutoResetEvent.h
+++ b/Utilities/AutoResetEvent.h
@@ -15,6 +15,7 @@ public:
 	AutoResetEvent();
 	~AutoResetEvent();
 
+	void Reset();
 	void Wait(int timeoutDelay = 0);
 	void Signal();
 };