--- a/dom/media/MediaFormatReader.cpp
+++ b/dom/media/MediaFormatReader.cpp
@@ -149,20 +149,16 @@ MediaFormatReader::Shutdown()
   mPlatform = nullptr;
 
   return MediaDecoderReader::Shutdown();
 }
 
 void
 MediaFormatReader::InitLayersBackendType()
 {
-  if (!IsVideoContentType(mDecoder->GetResource()->GetContentType())) {
-    // Not playing video, we don't care about the layers backend type.
-    return;
-  }
   // Extract the layer manager backend type so that platform decoders
   // can determine whether it's worthwhile using hardware accelerated
   // video decoding.
   MediaDecoderOwner* owner = mDecoder->GetOwner();
   if (!owner) {
     NS_WARNING("MediaFormatReader without a decoder owner, can't get HWAccel");
     return;
   }