diff --git a/dlls/amstream/multimedia.c b/dlls/amstream/multimedia.c
index 6bac95a243b..98ffc95a54a 100644
--- a/dlls/amstream/multimedia.c
+++ b/dlls/amstream/multimedia.c
@@ -471,9 +471,12 @@ static HRESULT WINAPI multimedia_stream_OpenFile(IAMMultiMediaStream *iface,
 
         if (SUCCEEDED(ret = IGraphBuilder_QueryInterface(This->graph, &IID_IFilterGraph2, (void **)&graph)))
         {
-            ret = IFilterGraph2_RenderEx(graph, This->ipin, AM_RENDEREX_RENDERTOEXISTINGRENDERERS, NULL);
+            DWORD renderflags = (flags & AMMSF_RENDERALLSTREAMS) ? 0 : AM_RENDEREX_RENDERTOEXISTINGRENDERERS;
+
+            ret = IFilterGraph2_RenderEx(graph, This->ipin, renderflags, NULL);
             if (ret == VFW_E_CANNOT_RENDER) ret = VFW_E_CANNOT_CONNECT;
             else if (ret == VFW_S_PARTIAL_RENDER) ret = S_OK;
+
             IFilterGraph2_Release(graph);
         }
         else
diff --git a/dlls/amstream/tests/amstream.c b/dlls/amstream/tests/amstream.c
index 1480f723a1c..a43eec77ec2 100644
--- a/dlls/amstream/tests/amstream.c
+++ b/dlls/amstream/tests/amstream.c
@@ -451,6 +451,50 @@ static void test_openfile(const WCHAR *test_avi_path)
     ref = IAMMultiMediaStream_Release(mmstream);
     ok(!ref, "Got outstanding refcount %d.\n", ref);
 
+    mmstream = create_ammultimediastream();
+
+    hr = IAMMultiMediaStream_GetFilterGraph(mmstream, &graph);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ok(!graph, "Expected NULL graph.\n");
+
+    hr = IAMMultiMediaStream_GetFilter(mmstream, &filter);
+    ok(!!filter, "Expected non-NULL filter.\n");
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+
+    check_interface(filter, &IID_IMediaSeeking, FALSE);
+
+    hr = IAMMultiMediaStream_OpenFile(mmstream, test_avi_path, AMMSF_RENDERALLSTREAMS);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+
+    check_interface(filter, &IID_IMediaSeeking, FALSE);
+
+    hr = IAMMultiMediaStream_GetFilterGraph(mmstream, &graph);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ok(!!graph, "Expected non-NULL graph.\n");
+
+    hr = IGraphBuilder_QueryInterface(graph, &IID_IMediaFilter, (void **)&media_filter);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+
+    hr = IAMMultiMediaStream_SetState(mmstream, STREAMSTATE_RUN);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+
+    clock = NULL;
+    IMediaFilter_GetSyncSource(media_filter, &clock);
+    ok(!!clock, "Expected non-NULL clock.\n");
+
+    hr = IAMMultiMediaStream_SetState(mmstream, STREAMSTATE_STOP);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+
+    ref = IAMMultiMediaStream_Release(mmstream);
+    ok(!ref, "Got outstanding refcount %d.\n", ref);
+    IMediaFilter_Release(media_filter);
+    ref = IGraphBuilder_Release(graph);
+    ok(!ref, "Got outstanding refcount %d.\n", ref);
+    ref = IMediaStreamFilter_Release(filter);
+    ok(!ref, "Got outstanding refcount %d.\n", ref);
+    ref = IReferenceClock_Release(clock);
+    ok(!ref, "Got outstanding refcount %d.\n", ref);
+
     mmstream = create_ammultimediastream();
     hr = IAMMultiMediaStream_GetFilterGraph(mmstream, &graph);
     ok(hr == S_OK, "Got hr %#x.\n", hr);