--- a/dom/media/platforms/wmf/WMFVideoMFTManager.cpp
+++ b/dom/media/platforms/wmf/WMFVideoMFTManager.cpp
@@ -230,17 +230,18 @@ WMFVideoMFTManager::Init()
 
   return success;
 }
 
 bool
 WMFVideoMFTManager::InitInternal(bool aForceD3D9)
 {
   mUseHwAccel = false; // default value; changed if D3D setup succeeds.
-  bool useDxva = InitializeDXVA(aForceD3D9);
+  bool useDxva = InitializeDXVA(aForceD3D9 ||
+                                mStreamType == VP8 || mStreamType == VP9);
 
   RefPtr<MFTDecoder> decoder(new MFTDecoder());
 
   HRESULT hr = decoder->Create(GetMFTGUID());
   NS_ENSURE_TRUE(SUCCEEDED(hr), false);
 
   RefPtr<IMFAttributes> attr(decoder->GetAttributes());
   UINT32 aware = 0;