--- a/dom/media/MediaDecoderStateMachine.cpp
+++ b/dom/media/MediaDecoderStateMachine.cpp
@@ -442,16 +442,21 @@ public:
   bool HandleEndOfStream() override
   {
     MaybeFinishDecodeFirstFrame();
     return true;
   }
 
   RefPtr<MediaDecoder::SeekPromise> HandleSeek(SeekTarget aTarget) override;
 
+  void HandleVideoSuspendTimeout() override
+  {
+    // Do nothing for we need to decode the 1st video frame to get the dimensions.
+  }
+
 private:
   // Notify FirstFrameLoaded if having decoded first frames and
   // transition to SEEKING if there is any pending seek, or DECODING otherwise.
   void MaybeFinishDecodeFirstFrame();
 };
 
 class MediaDecoderStateMachine::DecodingState
   : public MediaDecoderStateMachine::StateObject