--- a/dom/media/platforms/apple/AppleVDADecoder.h
+++ b/dom/media/platforms/apple/AppleVDADecoder.h
@@ -135,15 +135,15 @@ protected:
 
 private:
   VDADecoder mDecoder;
 
   // Method to set up the decompression session.
   nsresult InitializeSession();
 
   // Method to pass a frame to VideoToolbox for decoding.
-  nsresult ProcessDecode(MediaRawData* aSample);
+  virtual nsresult ProcessDecode(MediaRawData* aSample);
   CFDictionaryRef CreateDecoderSpecification();
 };
 
 } // namespace mozilla
 
 #endif // mozilla_AppleVDADecoder_h

--- a/dom/media/platforms/apple/AppleVTDecoder.cpp
+++ b/dom/media/platforms/apple/AppleVTDecoder.cpp
@@ -75,35 +75,16 @@ AppleVTDecoder::ProcessShutdown()
   }
   if (mFormat) {
     LOG("%s: releasing format %p", __func__, mFormat);
     CFRelease(mFormat);
     mFormat = nullptr;
   }
 }
 
-nsresult
-AppleVTDecoder::Input(MediaRawData* aSample)
-{
-  MOZ_ASSERT(mCallback->OnReaderTaskQueue());
-
-  LOG("mp4 input sample %p pts %lld duration %lld us%s %d bytes",
-      aSample,
-      aSample->mTime,
-      aSample->mDuration,
-      aSample->mKeyframe ? " keyframe" : "",
-      aSample->Size());
-
-  mInputIncoming++;
-
-  mTaskQueue->Dispatch(NewRunnableMethod<RefPtr<MediaRawData>>(
-    this, &AppleVTDecoder::ProcessDecode, aSample));
-  return NS_OK;
-}
-
 void
 AppleVTDecoder::ProcessFlush()
 {
   MOZ_ASSERT(mTaskQueue->IsCurrentThreadIn());
   nsresult rv = WaitForAsynchronousFrames();
   if (NS_FAILED(rv)) {
     LOG("AppleVTDecoder::Flush failed waiting for platform decoder "
         "with error:%d.", rv);

--- a/dom/media/platforms/apple/AppleVTDecoder.h
+++ b/dom/media/platforms/apple/AppleVTDecoder.h
@@ -16,17 +16,16 @@ namespace mozilla {
 class AppleVTDecoder : public AppleVDADecoder {
 public:
   AppleVTDecoder(const VideoInfo& aConfig,
                  FlushableTaskQueue* aVideoTaskQueue,
                  MediaDataDecoderCallback* aCallback,
                  layers::ImageContainer* aImageContainer);
   virtual ~AppleVTDecoder();
   RefPtr<InitPromise> Init() override;
-  nsresult Input(MediaRawData* aSample) override;
   bool IsHardwareAccelerated(nsACString& aFailureReason) const override
   {
     return mIsHardwareAccelerated;
   }
 
   const char* GetDescriptionName() const override
   {
     return mIsHardwareAccelerated
@@ -39,17 +38,17 @@ protected:
   void ProcessDrain() override;
   void ProcessShutdown() override;
 
 private:
   CMVideoFormatDescriptionRef mFormat;
   VTDecompressionSessionRef mSession;
 
   // Method to pass a frame to VideoToolbox for decoding.
-  nsresult ProcessDecode(MediaRawData* aSample);
+  nsresult ProcessDecode(MediaRawData* aSample) override;
   // Method to set up the decompression session.
   nsresult InitializeSession();
   nsresult WaitForAsynchronousFrames();
   CFDictionaryRef CreateDecoderSpecification();
   CFDictionaryRef CreateDecoderExtensions();
   Atomic<bool> mIsHardwareAccelerated;
 };