diff --git a/dlls/winegstreamer/Makefile.in b/dlls/winegstreamer/Makefile.in
index e578d194f7f..0b3229160b9 100644
--- a/dlls/winegstreamer/Makefile.in
+++ b/dlls/winegstreamer/Makefile.in
@@ -6,6 +6,7 @@ EXTRALIBS = $(GSTREAMER_LIBS) $(PTHREAD_LIBS)
 PARENTSRC = ../strmbase
 
 C_SRCS = \
+	audioconvert.c \
 	filter.c \
 	gst_cbs.c \
 	gstdemux.c \
diff --git a/dlls/winegstreamer/audioconvert.c b/dlls/winegstreamer/audioconvert.c
new file mode 100644
index 00000000000..1c0fcf660c9
--- /dev/null
+++ b/dlls/winegstreamer/audioconvert.c
@@ -0,0 +1,304 @@
+/* GStreamer Audio Converter
+ *
+ * Copyright 2020 Derek Lesho
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include "config.h"
+
+#include "gst_private.h"
+
+#include "mfapi.h"
+#include "mferror.h"
+#include "mfidl.h"
+#include "ks.h"
+#include "ksmedia.h"
+
+#include "wine/debug.h"
+#include "wine/heap.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(mfplat);
+
+struct audio_converter
+{
+    IMFTransform IMFTransform_iface;
+    LONG refcount;
+};
+
+static struct audio_converter *impl_audio_converter_from_IMFTransform(IMFTransform *iface)
+{
+    return CONTAINING_RECORD(iface, struct audio_converter, IMFTransform_iface);
+}
+
+static HRESULT WINAPI audio_converter_QueryInterface(IMFTransform *iface, REFIID riid, void **obj)
+{
+    TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), obj);
+
+    if (IsEqualIID(riid, &IID_IMFTransform) ||
+            IsEqualIID(riid, &IID_IUnknown))
+    {
+        *obj = iface;
+        IMFTransform_AddRef(iface);
+        return S_OK;
+    }
+
+    WARN("Unsupported %s.\n", debugstr_guid(riid));
+    *obj = NULL;
+    return E_NOINTERFACE;
+}
+
+static ULONG WINAPI audio_converter_AddRef(IMFTransform *iface)
+{
+    struct audio_converter *transform = impl_audio_converter_from_IMFTransform(iface);
+    ULONG refcount = InterlockedIncrement(&transform->refcount);
+
+    TRACE("%p, refcount %u.\n", iface, refcount);
+
+    return refcount;
+}
+
+static ULONG WINAPI audio_converter_Release(IMFTransform *iface)
+{
+    struct audio_converter *transform = impl_audio_converter_from_IMFTransform(iface);
+    ULONG refcount = InterlockedDecrement(&transform->refcount);
+
+    TRACE("%p, refcount %u.\n", iface, refcount);
+
+    if (!refcount)
+    {
+        heap_free(transform);
+    }
+
+    return refcount;
+}
+
+static HRESULT WINAPI audio_converter_GetStreamLimits(IMFTransform *iface, DWORD *input_minimum, DWORD *input_maximum,
+        DWORD *output_minimum, DWORD *output_maximum)
+{
+    TRACE("%p, %p, %p, %p, %p.\n", iface, input_minimum, input_maximum, output_minimum, output_maximum);
+
+    *input_minimum = *input_maximum = *output_minimum = *output_maximum = 1;
+
+    return S_OK;
+}
+
+static HRESULT WINAPI audio_converter_GetStreamCount(IMFTransform *iface, DWORD *inputs, DWORD *outputs)
+{
+    TRACE("%p, %p, %p.\n", iface, inputs, outputs);
+
+    *inputs = *outputs = 1;
+
+    return S_OK;
+}
+
+static HRESULT WINAPI audio_converter_GetStreamIDs(IMFTransform *iface, DWORD input_size, DWORD *inputs,
+        DWORD output_size, DWORD *outputs)
+{
+    TRACE("%p %u %p %u %p.\n", iface, input_size, inputs, output_size, outputs);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_GetInputStreamInfo(IMFTransform *iface, DWORD id, MFT_INPUT_STREAM_INFO *info)
+{
+    FIXME("%p %u %p.\n", iface, id, info);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_GetOutputStreamInfo(IMFTransform *iface, DWORD id, MFT_OUTPUT_STREAM_INFO *info)
+{
+    FIXME("%p %u %p.\n", iface, id, info);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_GetAttributes(IMFTransform *iface, IMFAttributes **attributes)
+{
+    FIXME("%p, %p.\n", iface, attributes);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_GetInputStreamAttributes(IMFTransform *iface, DWORD id,
+        IMFAttributes **attributes)
+{
+    FIXME("%p, %u, %p.\n", iface, id, attributes);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_GetOutputStreamAttributes(IMFTransform *iface, DWORD id,
+        IMFAttributes **attributes)
+{
+    FIXME("%p, %u, %p.\n", iface, id, attributes);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_DeleteInputStream(IMFTransform *iface, DWORD id)
+{
+    TRACE("%p, %u.\n", iface, id);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_AddInputStreams(IMFTransform *iface, DWORD streams, DWORD *ids)
+{
+    TRACE("%p, %u, %p.\n", iface, streams, ids);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_GetInputAvailableType(IMFTransform *iface, DWORD id, DWORD index,
+        IMFMediaType **type)
+{
+    FIXME("%p, %u, %u, %p.\n", iface, id, index, type);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_GetOutputAvailableType(IMFTransform *iface, DWORD id, DWORD index,
+        IMFMediaType **type)
+{
+    FIXME("%p, %u, %u, %p.\n", iface, id, index, type);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_SetInputType(IMFTransform *iface, DWORD id, IMFMediaType *type, DWORD flags)
+{
+    FIXME("%p, %u, %p, %#x.\n", iface, id, type, flags);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_SetOutputType(IMFTransform *iface, DWORD id, IMFMediaType *type, DWORD flags)
+{
+    FIXME("%p, %u, %p, %#x.\n", iface, id, type, flags);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_GetInputCurrentType(IMFTransform *iface, DWORD id, IMFMediaType **type)
+{
+    FIXME("%p, %u, %p.\n", iface, id, type);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_GetOutputCurrentType(IMFTransform *iface, DWORD id, IMFMediaType **type)
+{
+    FIXME("%p, %u, %p.\n", iface, id, type);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_GetInputStatus(IMFTransform *iface, DWORD id, DWORD *flags)
+{
+    FIXME("%p, %u, %p.\n", iface, id, flags);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_GetOutputStatus(IMFTransform *iface, DWORD *flags)
+{
+    FIXME("%p, %p.\n", iface, flags);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_SetOutputBounds(IMFTransform *iface, LONGLONG lower, LONGLONG upper)
+{
+    FIXME("%p, %s, %s.\n", iface, wine_dbgstr_longlong(lower), wine_dbgstr_longlong(upper));
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_ProcessEvent(IMFTransform *iface, DWORD id, IMFMediaEvent *event)
+{
+    TRACE("%p, %u, %p.\n", iface, id, event);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_ProcessMessage(IMFTransform *iface, MFT_MESSAGE_TYPE message, ULONG_PTR param)
+{
+    FIXME("%p, %u %lu.\n", iface, message, param);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_ProcessInput(IMFTransform *iface, DWORD id, IMFSample *sample, DWORD flags)
+{
+    FIXME("%p, %u, %p, %#x.\n", iface, id, sample, flags);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI audio_converter_ProcessOutput(IMFTransform *iface, DWORD flags, DWORD count,
+        MFT_OUTPUT_DATA_BUFFER *samples, DWORD *status)
+{
+    FIXME("%p, %#x, %u, %p, %p.\n", iface, flags, count, samples, status);
+
+    return E_NOTIMPL;
+}
+
+static const IMFTransformVtbl audio_converter_vtbl =
+{
+    audio_converter_QueryInterface,
+    audio_converter_AddRef,
+    audio_converter_Release,
+    audio_converter_GetStreamLimits,
+    audio_converter_GetStreamCount,
+    audio_converter_GetStreamIDs,
+    audio_converter_GetInputStreamInfo,
+    audio_converter_GetOutputStreamInfo,
+    audio_converter_GetAttributes,
+    audio_converter_GetInputStreamAttributes,
+    audio_converter_GetOutputStreamAttributes,
+    audio_converter_DeleteInputStream,
+    audio_converter_AddInputStreams,
+    audio_converter_GetInputAvailableType,
+    audio_converter_GetOutputAvailableType,
+    audio_converter_SetInputType,
+    audio_converter_SetOutputType,
+    audio_converter_GetInputCurrentType,
+    audio_converter_GetOutputCurrentType,
+    audio_converter_GetInputStatus,
+    audio_converter_GetOutputStatus,
+    audio_converter_SetOutputBounds,
+    audio_converter_ProcessEvent,
+    audio_converter_ProcessMessage,
+    audio_converter_ProcessInput,
+    audio_converter_ProcessOutput,
+};
+
+HRESULT audio_converter_create(REFIID riid, void **ret)
+{
+    struct audio_converter *object;
+
+    TRACE("%s %p\n", debugstr_guid(riid), ret);
+
+    if (!(object = heap_alloc_zero(sizeof(*object))))
+        return E_OUTOFMEMORY;
+
+    object->IMFTransform_iface.lpVtbl = &audio_converter_vtbl;
+    object->refcount = 1;
+
+    *ret = &object->IMFTransform_iface;
+    return S_OK;
+}
diff --git a/dlls/winegstreamer/gst_private.h b/dlls/winegstreamer/gst_private.h
index 28e424439d8..7889c996204 100644
--- a/dlls/winegstreamer/gst_private.h
+++ b/dlls/winegstreamer/gst_private.h
@@ -84,4 +84,6 @@ IMFSample *mf_sample_from_gst_buffer(GstBuffer *in) DECLSPEC_HIDDEN;
 
 HRESULT winegstreamer_stream_handler_create(REFIID riid, void **obj) DECLSPEC_HIDDEN;
 
+HRESULT audio_converter_create(REFIID riid, void **ret) DECLSPEC_HIDDEN;
+
 #endif /* __GST_PRIVATE_INCLUDED__ */
diff --git a/dlls/winegstreamer/mfplat.c b/dlls/winegstreamer/mfplat.c
index 3a160d68093..095a9b81091 100644
--- a/dlls/winegstreamer/mfplat.c
+++ b/dlls/winegstreamer/mfplat.c
@@ -405,6 +405,8 @@ failed:
 
 static const GUID CLSID_GStreamerByteStreamHandler = {0x317df618, 0x5e5a, 0x468a, {0x9f, 0x15, 0xd8, 0x27, 0xa9, 0xa0, 0x81, 0x62}};
 
+static const GUID CLSID_WINEAudioConverter = {0x6a170414,0xaad9,0x4693,{0xb8,0x06,0x3a,0x0c,0x47,0xc5,0x70,0xd6}};
+
 static const struct class_object
 {
     const GUID *clsid;
@@ -414,6 +416,7 @@ class_objects[] =
 {
     { &CLSID_VideoProcessorMFT, &video_processor_create },
     { &CLSID_GStreamerByteStreamHandler, &winegstreamer_stream_handler_create },
+    { &CLSID_WINEAudioConverter, &audio_converter_create },
 };
 
 HRESULT mfplat_get_class_object(REFCLSID rclsid, REFIID riid, void **obj)
diff --git a/dlls/winegstreamer/winegstreamer_classes.idl b/dlls/winegstreamer/winegstreamer_classes.idl
index 1dc4ba9a10b..cf1fc69f38a 100644
--- a/dlls/winegstreamer/winegstreamer_classes.idl
+++ b/dlls/winegstreamer/winegstreamer_classes.idl
@@ -61,3 +61,9 @@ coclass VideoProcessorMFT {}
     uuid(317df618-5e5a-468a-9f15-d827a9a08162)
 ]
 coclass GStreamerByteStreamHandler {}
+
+[
+    threading(both),
+    uuid(6a170414-aad9-4693-b806-3a0c47c570d6)
+]
+coclass WINEAudioConverter { }