diff --git a/dlls/winegstreamer/gst_private.h b/dlls/winegstreamer/gst_private.h
index c7c72ab65fc..e1dec7b755c 100644
--- a/dlls/winegstreamer/gst_private.h
+++ b/dlls/winegstreamer/gst_private.h
@@ -168,6 +168,8 @@ struct wm_stream *wm_reader_get_stream_by_stream_number(struct wm_reader *reader
         WORD stream_number);
 HRESULT wm_reader_get_stream_sample(struct wm_stream *stream,
         INSSBuffer **sample, QWORD *pts, QWORD *duration, DWORD *flags);
+HRESULT wm_reader_get_stream_selection(struct wm_reader *reader,
+        WORD stream_number, WMT_STREAM_SELECTION *selection);
 void wm_reader_init(struct wm_reader *reader, const struct wm_reader_ops *ops);
 HRESULT wm_reader_open_file(struct wm_reader *reader, const WCHAR *filename);
 HRESULT wm_reader_open_stream(struct wm_reader *reader, IStream *stream);
diff --git a/dlls/winegstreamer/wm_reader.c b/dlls/winegstreamer/wm_reader.c
index 6b29415e363..0e0c639d504 100644
--- a/dlls/winegstreamer/wm_reader.c
+++ b/dlls/winegstreamer/wm_reader.c
@@ -1872,6 +1872,25 @@ HRESULT wm_reader_set_streams_selected(struct wm_reader *reader, WORD count,
     return S_OK;
 }
 
+HRESULT wm_reader_get_stream_selection(struct wm_reader *reader,
+        WORD stream_number, WMT_STREAM_SELECTION *selection)
+{
+    struct wm_stream *stream;
+
+    EnterCriticalSection(&reader->cs);
+
+    if (!(stream = wm_reader_get_stream_by_stream_number(reader, stream_number)))
+    {
+        LeaveCriticalSection(&reader->cs);
+        return E_INVALIDARG;
+    }
+
+    *selection = stream->selection;
+
+    LeaveCriticalSection(&reader->cs);
+    return S_OK;
+}
+
 void wm_reader_init(struct wm_reader *reader, const struct wm_reader_ops *ops)
 {
     reader->IWMHeaderInfo3_iface.lpVtbl = &header_info_vtbl;
diff --git a/dlls/winegstreamer/wm_syncreader.c b/dlls/winegstreamer/wm_syncreader.c
index 3e980c59601..73bbf18898f 100644
--- a/dlls/winegstreamer/wm_syncreader.c
+++ b/dlls/winegstreamer/wm_syncreader.c
@@ -221,11 +221,14 @@ static HRESULT WINAPI WMSyncReader_GetStreamNumberForOutput(IWMSyncReader2 *ifac
     return S_OK;
 }
 
-static HRESULT WINAPI WMSyncReader_GetStreamSelected(IWMSyncReader2 *iface, WORD stream_num, WMT_STREAM_SELECTION *selection)
+static HRESULT WINAPI WMSyncReader_GetStreamSelected(IWMSyncReader2 *iface,
+        WORD stream_number, WMT_STREAM_SELECTION *selection)
 {
-    struct sync_reader *This = impl_from_IWMSyncReader2(iface);
-    FIXME("(%p)->(%d %p): stub!\n", This, stream_num, selection);
-    return E_NOTIMPL;
+    struct sync_reader *reader = impl_from_IWMSyncReader2(iface);
+
+    TRACE("reader %p, stream_number %u, selection %p.\n", reader, stream_number, selection);
+
+    return wm_reader_get_stream_selection(&reader->reader, stream_number, selection);
 }
 
 static HRESULT WINAPI WMSyncReader_Open(IWMSyncReader2 *iface, const WCHAR *filename)