--- a/dom/html/HTMLMediaElement.cpp
+++ b/dom/html/HTMLMediaElement.cpp
@@ -5261,16 +5261,19 @@ void HTMLMediaElement::NetworkError()
 
 void HTMLMediaElement::DecodeError(const MediaResult& aError)
 {
   nsAutoString src;
   GetCurrentSrc(src);
   const char16_t* params[] = { src.get() };
   ReportLoadError("MediaLoadDecodeError", params, ArrayLength(params));
 
+  DecoderDoctorDiagnostics diagnostics;
+  diagnostics.StoreDecodeError(OwnerDoc(), aError, src, __func__);
+
   AudioTracks()->EmptyTracks();
   VideoTracks()->EmptyTracks();
   if (mIsLoadingFromSourceChildren) {
     mErrorSink->ResetError();
     if (mSourceLoadCandidate) {
       DispatchAsyncSourceError(mSourceLoadCandidate);
       QueueLoadFromSourceTask();
     } else {