GS/GSCapture: Flush stale GSCapture audio buffer during state load

pcsx2/GS/GSCapture.cpp

@@ -169,6 +169,7 @@ namespace GSCapture
 	static bool ReceivePackets(AVCodecContext* codec_context, AVStream* stream, AVPacket* packet);
 	static bool ProcessAudioPackets(s64 video_pts);
 	static void InternalEndCapture(std::unique_lock<std::mutex>& lock);
+	static void InternalFlush(bool flush_audio_only);
 	static CodecList GetCodecListForContainer(const char* container, AVMediaType type);
 
 	static std::mutex s_lock;
@@ -1463,14 +1464,14 @@ std::string GSCapture::GetNextCaptureFileName()
 	return ret;
 }
 
-void GSCapture::Flush()
+void GSCapture::InternalFlush(bool flush_audio_only)
 {
 	std::unique_lock<std::mutex> lock(s_lock);
 
 	if (s_encoding_error)
 		return;
-
-	ProcessAllInFlightFrames(lock);
+	if (!flush_audio_only)
+		ProcessAllInFlightFrames(lock);
 
 	if (IsCapturingAudio())
 	{
@@ -1485,6 +1486,16 @@ void GSCapture::Flush()
 	}
 }
 
+void GSCapture::Flush()
+{
+	InternalFlush(false);
+}
+
+void GSCapture::FlushAudioOnly()
+{
+	InternalFlush(true);
+}
+
 GSCapture::CodecList GSCapture::GetCodecListForContainer(const char* container, AVMediaType type)
 {
 	CodecList ret;

pcsx2/GS/GSCapture.h

@@ -32,7 +32,7 @@ namespace GSCapture
 	GSVector2i GetSize();
 	std::string GetNextCaptureFileName();
 	void Flush();
-
+	void FlushAudioOnly();
 	using CodecName = std::pair<std::string, std::string>; // shortname,longname
 	using CodecList = std::vector<CodecName>;
 	CodecList GetVideoCodecList(const char* container);

pcsx2/VMManager.cpp

@@ -14,6 +14,7 @@
 #include "GS.h"
 #include "GS/Renderers/HW/GSTextureReplacements.h"
 #include "GSDumpReplayer.h"
+#include "GS/GSCapture.h"
 #include "GameDatabase.h"
 #include "GameList.h"
 #include "Host.h"
@@ -1910,7 +1911,7 @@ bool VMManager::DoLoadState(const char* filename, Error* error)
 		Error::SetString(error, TRANSLATE_STR("VMManager", "Cannot load state while replaying a GS dump."));
 		return false;
 	}
-
+	GSCapture::FlushAudioOnly();
 	Host::OnSaveStateLoading(filename);
 
 	if (!SaveState_UnzipFromDisk(filename, error))