diff --git a/dlls/quartz/tests/vmr9.c b/dlls/quartz/tests/vmr9.c
index 80bb9303780..f65ddc2278e 100644
--- a/dlls/quartz/tests/vmr9.c
+++ b/dlls/quartz/tests/vmr9.c
@@ -22,6 +22,7 @@
 #include "dshow.h"
 #include "d3d9.h"
 #include "vmr9.h"
+#include "wine/strmbase.h"
 #include "wine/test.h"
 
 static IBaseFilter *create_vmr9(DWORD mode)
@@ -42,6 +43,21 @@ static IBaseFilter *create_vmr9(DWORD mode)
     return filter;
 }
 
+static inline BOOL compare_media_types(const AM_MEDIA_TYPE *a, const AM_MEDIA_TYPE *b)
+{
+    return !memcmp(a, b, offsetof(AM_MEDIA_TYPE, pbFormat))
+        && !memcmp(a->pbFormat, b->pbFormat, a->cbFormat);
+}
+
+static IFilterGraph2 *create_graph(void)
+{
+    IFilterGraph2 *ret;
+    HRESULT hr;
+    hr = CoCreateInstance(&CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, &IID_IFilterGraph2, (void **)&ret);
+    ok(hr == S_OK, "Failed to create FilterGraph: %#x\n", hr);
+    return ret;
+}
+
 static ULONG get_refcount(void *iface)
 {
     IUnknown *unknown = iface;
@@ -836,6 +852,250 @@ static void test_unconnected_filter_state(void)
     ok(!ref, "Got outstanding refcount %d.\n", ref);
 }
 
+struct testfilter
+{
+    struct strmbase_filter filter;
+    struct strmbase_source source;
+};
+
+static const IBaseFilterVtbl testfilter_vtbl =
+{
+    BaseFilterImpl_QueryInterface,
+    BaseFilterImpl_AddRef,
+    BaseFilterImpl_Release,
+    BaseFilterImpl_GetClassID,
+    BaseFilterImpl_Stop,
+    BaseFilterImpl_Pause,
+    BaseFilterImpl_Run,
+    BaseFilterImpl_GetState,
+    BaseFilterImpl_SetSyncSource,
+    BaseFilterImpl_GetSyncSource,
+    BaseFilterImpl_EnumPins,
+    BaseFilterImpl_FindPin,
+    BaseFilterImpl_QueryFilterInfo,
+    BaseFilterImpl_JoinFilterGraph,
+    BaseFilterImpl_QueryVendorInfo,
+};
+
+static inline struct testfilter *impl_from_strmbase_filter(struct strmbase_filter *iface)
+{
+    return CONTAINING_RECORD(iface, struct testfilter, filter);
+}
+
+static IPin *testfilter_get_pin(struct strmbase_filter *iface, unsigned int index)
+{
+    struct testfilter *filter = impl_from_strmbase_filter(iface);
+    if (!index)
+        return &filter->source.pin.IPin_iface;
+    return NULL;
+}
+
+static void testfilter_destroy(struct strmbase_filter *iface)
+{
+    struct testfilter *filter = impl_from_strmbase_filter(iface);
+    strmbase_source_cleanup(&filter->source);
+    strmbase_filter_cleanup(&filter->filter);
+}
+
+static const struct strmbase_filter_ops testfilter_ops =
+{
+    .filter_get_pin = testfilter_get_pin,
+    .filter_destroy = testfilter_destroy,
+};
+
+static const IPinVtbl testsource_vtbl =
+{
+    BasePinImpl_QueryInterface,
+    BasePinImpl_AddRef,
+    BasePinImpl_Release,
+    BaseOutputPinImpl_Connect,
+    BaseOutputPinImpl_ReceiveConnection,
+    BasePinImpl_Disconnect,
+    BasePinImpl_ConnectedTo,
+    BasePinImpl_ConnectionMediaType,
+    BasePinImpl_QueryPinInfo,
+    BasePinImpl_QueryDirection,
+    BasePinImpl_QueryId,
+    BasePinImpl_QueryAccept,
+    BasePinImpl_EnumMediaTypes,
+    BasePinImpl_QueryInternalConnections,
+    BaseOutputPinImpl_EndOfStream,
+    BaseOutputPinImpl_BeginFlush,
+    BaseOutputPinImpl_EndFlush,
+    BasePinImpl_NewSegment,
+};
+
+static HRESULT testsource_query_accept(struct strmbase_pin *iface, const AM_MEDIA_TYPE *mt)
+{
+    return S_OK;
+}
+
+static HRESULT WINAPI testsource_AttemptConnection(struct strmbase_source *iface,
+        IPin *peer, const AM_MEDIA_TYPE *mt)
+{
+    HRESULT hr;
+
+    iface->pin.peer = peer;
+    IPin_AddRef(peer);
+    CopyMediaType(&iface->pin.mtCurrent, mt);
+
+    if (FAILED(hr = IPin_ReceiveConnection(peer, &iface->pin.IPin_iface, mt)))
+    {
+        ok(hr == VFW_E_TYPE_NOT_ACCEPTED, "Got hr %#x.\n", hr);
+        IPin_Release(peer);
+        iface->pin.peer = NULL;
+        FreeMediaType(&iface->pin.mtCurrent);
+    }
+
+    return hr;
+}
+
+static const struct strmbase_source_ops testsource_ops =
+{
+    .base.pin_query_accept = testsource_query_accept,
+    .base.pin_get_media_type = strmbase_pin_get_media_type,
+    .pfnAttemptConnection = testsource_AttemptConnection,
+};
+
+static void testfilter_init(struct testfilter *filter)
+{
+    static const GUID clsid = {0xabacab};
+    strmbase_filter_init(&filter->filter, &testfilter_vtbl, NULL, &clsid, &testfilter_ops);
+    strmbase_source_init(&filter->source, &testsource_vtbl, &filter->filter, L"", &testsource_ops);
+}
+
+static void test_connect_pin(void)
+{
+    VIDEOINFOHEADER vih =
+    {
+        .bmiHeader.biSize = sizeof(BITMAPINFOHEADER),
+        .bmiHeader.biBitCount = 32,
+        .bmiHeader.biWidth = 32,
+        .bmiHeader.biHeight = 16,
+        .bmiHeader.biPlanes = 1,
+        .bmiHeader.biCompression = BI_RGB,
+    };
+    AM_MEDIA_TYPE req_mt =
+    {
+        .majortype = MEDIATYPE_Video,
+        .formattype = FORMAT_VideoInfo,
+        .cbFormat = sizeof(vih),
+        .pbFormat = (BYTE *)&vih,
+    };
+    IBaseFilter *filter = create_vmr9(VMR9Mode_Windowed);
+    IFilterGraph2 *graph = create_graph();
+    struct testfilter source;
+    unsigned int i, j;
+    AM_MEDIA_TYPE mt;
+    IPin *pin, *peer;
+    HRESULT hr;
+    ULONG ref;
+
+    static const GUID *subtype_tests[] =
+    {
+        &MEDIASUBTYPE_RGB555,
+        &MEDIASUBTYPE_RGB565,
+        &MEDIASUBTYPE_RGB24,
+        &MEDIASUBTYPE_RGB32,
+    };
+    static const WORD bpp_tests[] = {15, 16, 24, 32};
+
+    testfilter_init(&source);
+
+    IFilterGraph2_AddFilter(graph, &source.filter.IBaseFilter_iface, NULL);
+    IFilterGraph2_AddFilter(graph, filter, NULL);
+
+    IBaseFilter_FindPin(filter, L"VMR Input0", &pin);
+
+    for (i = 0; i < ARRAY_SIZE(subtype_tests); ++i)
+    {
+        req_mt.subtype = *subtype_tests[i];
+
+        for (j = 0; j < ARRAY_SIZE(bpp_tests); ++j)
+        {
+            vih.bmiHeader.biBitCount = bpp_tests[j];
+
+            hr = IFilterGraph2_ConnectDirect(graph, &source.source.pin.IPin_iface, pin, &req_mt);
+            ok(hr == S_OK, "Got hr %#x for subtype %s and bpp %u.\n", hr,
+                    wine_dbgstr_guid(subtype_tests[i]), bpp_tests[j]);
+
+            hr = IFilterGraph2_Disconnect(graph, &source.source.pin.IPin_iface);
+            ok(hr == S_OK, "Got hr %#x.\n", hr);
+            hr = IFilterGraph2_Disconnect(graph, pin);
+            ok(hr == S_OK, "Got hr %#x.\n", hr);
+        }
+    }
+
+    req_mt.formattype = FORMAT_None;
+    hr = IFilterGraph2_ConnectDirect(graph, &source.source.pin.IPin_iface, pin, &req_mt);
+    ok(hr == VFW_E_TYPE_NOT_ACCEPTED, "Got hr %#x.\n", hr);
+    req_mt.formattype = GUID_NULL;
+    hr = IFilterGraph2_ConnectDirect(graph, &source.source.pin.IPin_iface, pin, &req_mt);
+    ok(hr == VFW_E_TYPE_NOT_ACCEPTED, "Got hr %#x.\n", hr);
+    req_mt.formattype = FORMAT_VideoInfo;
+
+    req_mt.subtype = MEDIASUBTYPE_RGB8;
+    hr = IFilterGraph2_ConnectDirect(graph, &source.source.pin.IPin_iface, pin, &req_mt);
+    todo_wine ok(hr == VFW_E_TYPE_NOT_ACCEPTED, "Got hr %#x.\n", hr);
+    if (hr == S_OK)
+    {
+        IFilterGraph2_Disconnect(graph, &source.source.pin.IPin_iface);
+        IFilterGraph2_Disconnect(graph, pin);
+    }
+    req_mt.subtype = MEDIASUBTYPE_WAVE;
+    hr = IFilterGraph2_ConnectDirect(graph, &source.source.pin.IPin_iface, pin, &req_mt);
+    todo_wine ok(hr == VFW_E_TYPE_NOT_ACCEPTED, "Got hr %#x.\n", hr);
+    if (hr == S_OK)
+    {
+        IFilterGraph2_Disconnect(graph, &source.source.pin.IPin_iface);
+        IFilterGraph2_Disconnect(graph, pin);
+    }
+    req_mt.subtype = MEDIASUBTYPE_RGB32;
+
+    peer = (IPin *)0xdeadbeef;
+    hr = IPin_ConnectedTo(pin, &peer);
+    ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#x.\n", hr);
+    ok(!peer, "Got peer %p.\n", peer);
+
+    hr = IPin_ConnectionMediaType(pin, &mt);
+    ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#x.\n", hr);
+
+    hr = IFilterGraph2_ConnectDirect(graph, &source.source.pin.IPin_iface, pin, &req_mt);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+
+    hr = IPin_ConnectedTo(pin, &peer);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ok(peer == &source.source.pin.IPin_iface, "Got peer %p.\n", peer);
+    IPin_Release(peer);
+
+    hr = IPin_ConnectionMediaType(pin, &mt);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ok(compare_media_types(&mt, &req_mt), "Media types didn't match.\n");
+
+    hr = IFilterGraph2_Disconnect(graph, pin);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    hr = IFilterGraph2_Disconnect(graph, pin);
+    todo_wine ok(hr == S_FALSE, "Got hr %#x.\n", hr);
+    ok(source.source.pin.peer == pin, "Got peer %p.\n", source.source.pin.peer);
+    IFilterGraph2_Disconnect(graph, &source.source.pin.IPin_iface);
+
+    peer = (IPin *)0xdeadbeef;
+    hr = IPin_ConnectedTo(pin, &peer);
+    ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#x.\n", hr);
+    ok(!peer, "Got peer %p.\n", peer);
+
+    hr = IPin_ConnectionMediaType(pin, &mt);
+    ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#x.\n", hr);
+
+    IPin_Release(pin);
+    ref = IFilterGraph2_Release(graph);
+    ok(!ref, "Got outstanding refcount %d.\n", ref);
+    ref = IBaseFilter_Release(filter);
+    ok(!ref, "Got outstanding refcount %d.\n", ref);
+    ref = IBaseFilter_Release(&source.filter.IBaseFilter_iface);
+    ok(!ref, "Got outstanding refcount %d.\n", ref);
+}
+
 START_TEST(vmr9)
 {
     IBaseFilter *filter;
@@ -860,6 +1120,7 @@ START_TEST(vmr9)
     test_media_types();
     test_enum_media_types();
     test_unconnected_filter_state();
+    test_connect_pin();
 
     CoUninitialize();
 }