diff --git a/dom/media/platforms/wmf/WMFVideoMFTManager.cpp b/dom/media/platforms/wmf/WMFVideoMFTManager.cpp
index 5fb4dc1930a0..74d882c8c719 100644
--- a/dom/media/platforms/wmf/WMFVideoMFTManager.cpp
+++ b/dom/media/platforms/wmf/WMFVideoMFTManager.cpp
@@ -21,6 +21,7 @@
 #include "gfx2DGlue.h"
 #include "gfxPrefs.h"
 #include "gfxWindowsPlatform.h"
+#include "mozilla/gfx/DeviceManagerDx.h"
 #include "mozilla/AbstractThread.h"
 #include "mozilla/ClearOnShutdown.h"
 #include "mozilla/Logging.h"
@@ -610,6 +611,22 @@ WMFVideoMFTManager::InitInternal()
       mVideoInfo.mDisplay.width,
       mVideoInfo.mDisplay.height);
 
+  if (!mUseHwAccel) {
+    RefPtr<ID3D11Device> device =
+      gfx::DeviceManagerDx::Get()->GetCompositorDevice();
+    if (!device) {
+      device = gfx::DeviceManagerDx::Get()->GetContentDevice();
+    }
+    if (device) {
+      RefPtr<ID3D10Multithread> multi;
+      HRESULT hr =
+        device->QueryInterface((ID3D10Multithread**)getter_AddRefs(multi));
+      if (SUCCEEDED(hr) && multi) {
+        multi->SetMultithreadProtected(TRUE);
+        mIMFUsable = true;
+      }
+    }
+  }
   return true;
 }
 
@@ -840,7 +857,7 @@ WMFVideoMFTManager::CreateBasicVideoFrame(IMFSample* aSample,
   nsIntRect pictureRegion = mVideoInfo.ScaledImageRect(videoWidth, videoHeight);
 
   LayersBackend backend = GetCompositorBackendType(mKnowsCompositor);
-  if (backend != LayersBackend::LAYERS_D3D11) {
+  if (backend != LayersBackend::LAYERS_D3D11 || !mIMFUsable) {
     RefPtr<VideoData> v =
       VideoData::CreateAndCopyData(mVideoInfo,
                                    mImageContainer,
diff --git a/dom/media/platforms/wmf/WMFVideoMFTManager.h b/dom/media/platforms/wmf/WMFVideoMFTManager.h
index 8c6316a5dec7..c3ad6e5aa111 100644
--- a/dom/media/platforms/wmf/WMFVideoMFTManager.h
+++ b/dom/media/platforms/wmf/WMFVideoMFTManager.h
@@ -121,6 +121,7 @@ private:
   bool mGotValidOutputAfterNullOutput = false;
   bool mGotExcessiveNullOutput = false;
   bool mIsValid = true;
+  bool mIMFUsable = false;
 };
 
 } // namespace mozilla