diff --git a/dlls/winegstreamer/gst_private.h b/dlls/winegstreamer/gst_private.h
index da0f1b103b3..e1abe7018da 100644
--- a/dlls/winegstreamer/gst_private.h
+++ b/dlls/winegstreamer/gst_private.h
@@ -102,9 +102,6 @@ void wg_parser_stream_seek(struct wg_parser_stream *stream, double rate,
 struct wg_transform *wg_transform_create(const struct wg_format *input_format,
         const struct wg_format *output_format);
 void wg_transform_destroy(struct wg_transform *transform);
-HRESULT wg_transform_push_data(struct wg_transform *transform, struct wg_sample *sample);
-HRESULT wg_transform_read_data(struct wg_transform *transform, struct wg_sample *sample,
-        struct wg_format *format);
 
 unsigned int wg_format_get_max_size(const struct wg_format *format);
 
diff --git a/dlls/winegstreamer/unixlib.h b/dlls/winegstreamer/unixlib.h
index ed56fb47908..860a8ab2a52 100644
--- a/dlls/winegstreamer/unixlib.h
+++ b/dlls/winegstreamer/unixlib.h
@@ -121,8 +121,6 @@ enum wg_sample_flag
     WG_SAMPLE_FLAG_HAS_PTS = 2,
     WG_SAMPLE_FLAG_HAS_DURATION = 4,
     WG_SAMPLE_FLAG_SYNC_POINT = 8,
-
-    WG_SAMPLE_FLAG_HAS_REFCOUNT = 0x10000, /* sample is queued on the client side and may be wrapped */
 };
 
 struct wg_sample
diff --git a/dlls/winegstreamer/wg_sample.c b/dlls/winegstreamer/wg_sample.c
index 47892b71796..ae8a2d4d0c7 100644
--- a/dlls/winegstreamer/wg_sample.c
+++ b/dlls/winegstreamer/wg_sample.c
@@ -185,7 +185,6 @@ static void wg_sample_queue_begin_append(struct wg_sample_queue *queue, struct w
 
     /* make sure a concurrent wg_sample_queue_flush call won't release the sample until we're done */
     InterlockedIncrement(&wg_sample->refcount);
-    sample->wg_sample.flags |= WG_SAMPLE_FLAG_HAS_REFCOUNT;
 
     EnterCriticalSection(&queue->cs);
     list_add_tail(&queue->samples, &sample->entry);
@@ -245,6 +244,13 @@ void wg_sample_queue_destroy(struct wg_sample_queue *queue)
     free(queue);
 }
 
+/* These unixlib entry points should not be used directly, they assume samples
+ * to be queued and zero-copy support, use the helpers below instead.
+ */
+HRESULT wg_transform_push_data(struct wg_transform *transform, struct wg_sample *sample);
+HRESULT wg_transform_read_data(struct wg_transform *transform, struct wg_sample *sample,
+        struct wg_format *format);
+
 HRESULT wg_transform_push_mf(struct wg_transform *transform, struct wg_sample *wg_sample,
         struct wg_sample_queue *queue)
 {
diff --git a/dlls/winegstreamer/wg_transform.c b/dlls/winegstreamer/wg_transform.c
index d40f508250c..b5517f24515 100644
--- a/dlls/winegstreamer/wg_transform.c
+++ b/dlls/winegstreamer/wg_transform.c
@@ -542,17 +542,7 @@ NTSTATUS wg_transform_push_data(void *args)
         return STATUS_SUCCESS;
     }
 
-    if (!(sample->flags & WG_SAMPLE_FLAG_HAS_REFCOUNT))
-    {
-        if (!(buffer = gst_buffer_new_and_alloc(sample->size)))
-        {
-            GST_ERROR("Failed to allocate input buffer");
-            return STATUS_NO_MEMORY;
-        }
-        gst_buffer_fill(buffer, 0, sample->data, sample->size);
-        GST_INFO("Copied %u bytes from sample %p to buffer %p", sample->size, sample, buffer);
-    }
-    else if (!(buffer = gst_buffer_new_wrapped_full(GST_MEMORY_FLAG_READONLY, sample->data, sample->max_size,
+    if (!(buffer = gst_buffer_new_wrapped_full(GST_MEMORY_FLAG_READONLY, sample->data, sample->max_size,
             0, sample->size, sample, wg_sample_free_notify)))
     {
         GST_ERROR("Failed to allocate input buffer");