diff --git a/dom/media/MediaDecoderReader.cpp b/dom/media/MediaDecoderReader.cpp
index 5425cfe7a49d..bc6ffcd34b6a 100644
--- a/dom/media/MediaDecoderReader.cpp
+++ b/dom/media/MediaDecoderReader.cpp
@@ -132,13 +132,15 @@ size_t MediaDecoderReader::SizeOfAudioQueueInFrames()
   return mAudioQueue.GetSize();
 }
 
-nsresult MediaDecoderReader::ResetDecode(TargetQueues aQueues /*= AUDIO_VIDEO*/)
+nsresult MediaDecoderReader::ResetDecode(TrackSet aTracks)
 {
-  VideoQueue().Reset();
-  mVideoDiscontinuity = true;
-  mBaseVideoPromise.RejectIfExists(CANCELED, __func__);
+  if (aTracks.contains(TrackInfo::kVideoTrack)) {
+    VideoQueue().Reset();
+    mVideoDiscontinuity = true;
+    mBaseVideoPromise.RejectIfExists(CANCELED, __func__);
+  }
 
-  if (aQueues == AUDIO_VIDEO) {
+  if (aTracks.contains(TrackInfo::kAudioTrack)) {
     AudioQueue().Reset();
     mAudioDiscontinuity = true;
     mBaseAudioPromise.RejectIfExists(CANCELED, __func__);
diff --git a/dom/media/MediaDecoderReader.h b/dom/media/MediaDecoderReader.h
index f0c94d5db64d..ed03865576fe 100644
--- a/dom/media/MediaDecoderReader.h
+++ b/dom/media/MediaDecoderReader.h
@@ -6,6 +6,7 @@
 #if !defined(MediaDecoderReader_h_)
 #define MediaDecoderReader_h_
 
+#include "mozilla/EnumSet.h"
 #include "mozilla/MozPromise.h"
 
 #include "AbstractMediaDecoder.h"
@@ -73,10 +74,7 @@ public:
     CANCELED
   };
 
-  enum TargetQueues {
-    VIDEO_ONLY,
-    AUDIO_VIDEO
-  };
+  using TrackSet = EnumSet<TrackInfo::TrackType>;
 
   using MetadataPromise =
     MozPromise<RefPtr<MetadataHolder>, ReadMetadataFailureReason, IsExclusive>;
@@ -130,7 +128,11 @@ public:
   // The first samples of every stream produced after a ResetDecode() call
   // *must* be marked as "discontinuities". If it's not, seeking work won't
   // properly!
-  virtual nsresult ResetDecode(TargetQueues aQueues = AUDIO_VIDEO);
+  //
+  // aParam is a set of TrackInfo::TrackType enums specifying which
+  // queues need to be reset, defaulting to both audio and video tracks.
+  virtual nsresult ResetDecode(TrackSet aTracks = TrackSet(TrackInfo::kAudioTrack,
+                                                           TrackInfo::kVideoTrack));
 
   // Requests one audio sample from the reader.
   //
diff --git a/dom/media/MediaDecoderReaderWrapper.cpp b/dom/media/MediaDecoderReaderWrapper.cpp
index 87f5f2c38bdd..8ee1e3edafd9 100644
--- a/dom/media/MediaDecoderReaderWrapper.cpp
+++ b/dom/media/MediaDecoderReaderWrapper.cpp
@@ -393,21 +393,24 @@ MediaDecoderReaderWrapper::SetIdle()
 }
 
 void
-MediaDecoderReaderWrapper::ResetDecode(TargetQueues aQueues)
+MediaDecoderReaderWrapper::ResetDecode(TrackSet aTracks)
 {
   MOZ_ASSERT(mOwnerThread->IsCurrentThreadIn());
 
-  if (aQueues == MediaDecoderReader::AUDIO_VIDEO) {
+  if (aTracks.contains(TrackInfo::kAudioTrack)) {
     mAudioDataRequest.DisconnectIfExists();
     mAudioWaitRequest.DisconnectIfExists();
   }
-  mVideoDataRequest.DisconnectIfExists();
-  mVideoWaitRequest.DisconnectIfExists();
+
+  if (aTracks.contains(TrackInfo::kVideoTrack)) {
+    mVideoDataRequest.DisconnectIfExists();
+    mVideoWaitRequest.DisconnectIfExists();
+  }
 
   nsCOMPtr<nsIRunnable> r =
-    NewRunnableMethod<TargetQueues>(mReader,
-                                    &MediaDecoderReader::ResetDecode,
-                                    aQueues);
+    NewRunnableMethod<TrackSet>(mReader,
+                                &MediaDecoderReader::ResetDecode,
+                                aTracks);
   mReader->OwnerThread()->Dispatch(r.forget());
 }
 
diff --git a/dom/media/MediaDecoderReaderWrapper.h b/dom/media/MediaDecoderReaderWrapper.h
index 91ca51af7e82..2813a19fb600 100644
--- a/dom/media/MediaDecoderReaderWrapper.h
+++ b/dom/media/MediaDecoderReaderWrapper.h
@@ -32,7 +32,7 @@ class MediaDecoderReaderWrapper {
   typedef MediaDecoderReader::SeekPromise SeekPromise;
   typedef MediaDecoderReader::WaitForDataPromise WaitForDataPromise;
   typedef MediaDecoderReader::BufferedUpdatePromise BufferedUpdatePromise;
-  typedef MediaDecoderReader::TargetQueues TargetQueues;
+  typedef MediaDecoderReader::TrackSet TrackSet;
   NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MediaDecoderReaderWrapper);
 
   /*
@@ -380,7 +380,7 @@ public:
 
   void ReleaseMediaResources();
   void SetIdle();
-  void ResetDecode(TargetQueues aQueues);
+  void ResetDecode(TrackSet aTracks);
 
   nsresult Init() { return mReader->Init(); }
   bool IsWaitForDataSupported() const { return mReader->IsWaitForDataSupported(); }
diff --git a/dom/media/MediaDecoderStateMachine.cpp b/dom/media/MediaDecoderStateMachine.cpp
index e3a4496cdd8b..9c3e586fa8f9 100644
--- a/dom/media/MediaDecoderStateMachine.cpp
+++ b/dom/media/MediaDecoderStateMachine.cpp
@@ -1427,7 +1427,7 @@ void MediaDecoderStateMachine::InitiateVideoDecodeRecoverySeek()
 
   // Reset our state machine and decoding pipeline before seeking.
   if (mSeekTask->NeedToResetMDSM()) {
-    Reset(MediaDecoderReader::VIDEO_ONLY);
+    Reset(TrackInfo::kVideoTrack);
   }
 
   // Do the seek.
@@ -2395,7 +2395,7 @@ nsresult MediaDecoderStateMachine::RunStateMachine()
 }
 
 void
-MediaDecoderStateMachine::Reset(MediaDecoderReader::TargetQueues aQueues /*= AUDIO_VIDEO*/)
+MediaDecoderStateMachine::Reset(TrackSet aTracks)
 {
   MOZ_ASSERT(OnTaskQueue());
   DECODER_LOG("MediaDecoderStateMachine::Reset");
@@ -2408,16 +2408,25 @@ MediaDecoderStateMachine::Reset(MediaDecoderReader::TargetQueues aQueues /*= AUD
              mState == DECODER_STATE_SEEKING ||
              mState == DECODER_STATE_DORMANT);
 
+  // Assert that aTracks specifies to reset the video track because we
+  // don't currently support resetting just the audio track.
+  MOZ_ASSERT(aTracks.contains(TrackInfo::kVideoTrack));
 
-  mDecodedVideoEndTime = 0;
-  mVideoCompleted = false;
-  VideoQueue().Reset();
-
-  if (aQueues == MediaDecoderReader::AUDIO_VIDEO) {
+  if (aTracks.contains(TrackInfo::kAudioTrack) &&
+      aTracks.contains(TrackInfo::kVideoTrack)) {
     // Stop the audio thread. Otherwise, MediaSink might be accessing AudioQueue
     // outside of the decoder monitor while we are clearing the queue and causes
     // crash for no samples to be popped.
     StopMediaSink();
+  }
+
+  if (aTracks.contains(TrackInfo::kVideoTrack)) {
+    mDecodedVideoEndTime = 0;
+    mVideoCompleted = false;
+    VideoQueue().Reset();
+  }
+
+  if (aTracks.contains(TrackInfo::kAudioTrack)) {
     mDecodedAudioEndTime = 0;
     mAudioCompleted = false;
     AudioQueue().Reset();
@@ -2428,7 +2437,7 @@ MediaDecoderStateMachine::Reset(MediaDecoderReader::TargetQueues aQueues /*= AUD
 
   mPlaybackOffset = 0;
 
-  mReader->ResetDecode(aQueues);
+  mReader->ResetDecode(aTracks);
 }
 
 int64_t
diff --git a/dom/media/MediaDecoderStateMachine.h b/dom/media/MediaDecoderStateMachine.h
index 72de3134525a..69854e82ae2c 100644
--- a/dom/media/MediaDecoderStateMachine.h
+++ b/dom/media/MediaDecoderStateMachine.h
@@ -135,6 +135,9 @@ enum class MediaEventType : int8_t {
 class MediaDecoderStateMachine
 {
   NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MediaDecoderStateMachine)
+
+  using TrackSet = MediaDecoderReader::TrackSet;
+
 public:
   typedef MediaDecoderOwner::NextFrameStatus NextFrameStatus;
   typedef mozilla::layers::ImageContainer::FrameID FrameID;
@@ -368,7 +371,8 @@ private:
 
   // Resets all state related to decoding and playback, emptying all buffers
   // and aborting all pending operations on the decode task queue.
-  void Reset(MediaDecoderReader::TargetQueues aQueues = MediaDecoderReader::AUDIO_VIDEO);
+  void Reset(TrackSet aTracks = TrackSet(TrackInfo::kAudioTrack,
+                                         TrackInfo::kVideoTrack));
 
 protected:
   virtual ~MediaDecoderStateMachine();
diff --git a/dom/media/MediaFormatReader.cpp b/dom/media/MediaFormatReader.cpp
index 39264facaee0..2b8093060fe0 100644
--- a/dom/media/MediaFormatReader.cpp
+++ b/dom/media/MediaFormatReader.cpp
@@ -1343,7 +1343,7 @@ MediaFormatReader::WaitForData(MediaData::Type aType)
 }
 
 nsresult
-MediaFormatReader::ResetDecode(TargetQueues aQueues)
+MediaFormatReader::ResetDecode(TrackSet aTracks)
 {
   MOZ_ASSERT(OnTaskQueue());
   LOGV("");
@@ -1352,15 +1352,22 @@ MediaFormatReader::ResetDecode(TargetQueues aQueues)
   mSkipRequest.DisconnectIfExists();
 
   // Do the same for any data wait promises.
-  if (aQueues == AUDIO_VIDEO) {
-    mAudio.mWaitingPromise.RejectIfExists(WaitForDataRejectValue(MediaData::AUDIO_DATA, WaitForDataRejectValue::CANCELED), __func__);
+  if (aTracks.contains(TrackInfo::kAudioTrack)) {
+    mAudio.mWaitingPromise.RejectIfExists(
+        WaitForDataRejectValue(MediaData::AUDIO_DATA,
+                               WaitForDataRejectValue::CANCELED), __func__);
+  }
+
+  if (aTracks.contains(TrackInfo::kVideoTrack)) {
+    mVideo.mWaitingPromise.RejectIfExists(
+        WaitForDataRejectValue(MediaData::VIDEO_DATA,
+                               WaitForDataRejectValue::CANCELED), __func__);
   }
-  mVideo.mWaitingPromise.RejectIfExists(WaitForDataRejectValue(MediaData::VIDEO_DATA, WaitForDataRejectValue::CANCELED), __func__);
 
   // Reset miscellaneous seeking state.
   mPendingSeekTime.reset();
 
-  if (HasVideo()) {
+  if (HasVideo() && aTracks.contains(TrackInfo::kVideoTrack)) {
     mVideo.ResetDemuxer();
     Reset(TrackInfo::kVideoTrack);
     if (mVideo.HasPromise()) {
@@ -1368,14 +1375,15 @@ MediaFormatReader::ResetDecode(TargetQueues aQueues)
     }
   }
 
-  if (HasAudio() && aQueues == AUDIO_VIDEO) {
+  if (HasAudio() && aTracks.contains(TrackInfo::kAudioTrack)) {
     mAudio.ResetDemuxer();
     Reset(TrackInfo::kAudioTrack);
     if (mAudio.HasPromise()) {
       mAudio.RejectPromise(CANCELED, __func__);
     }
   }
-  return MediaDecoderReader::ResetDecode(aQueues);
+
+  return MediaDecoderReader::ResetDecode(aTracks);
 }
 
 void
diff --git a/dom/media/MediaFormatReader.h b/dom/media/MediaFormatReader.h
index 9861f067deab..fb49264f0824 100644
--- a/dom/media/MediaFormatReader.h
+++ b/dom/media/MediaFormatReader.h
@@ -62,7 +62,7 @@ public:
   // For Media Resource Management
   void ReleaseMediaResources() override;
 
-  nsresult ResetDecode(TargetQueues aQueues) override;
+  nsresult ResetDecode(TrackSet aTracks) override;
 
   RefPtr<ShutdownPromise> Shutdown() override;
 
diff --git a/dom/media/android/AndroidMediaReader.cpp b/dom/media/android/AndroidMediaReader.cpp
index 7c9c1aa92a15..59f8441037f7 100644
--- a/dom/media/android/AndroidMediaReader.cpp
+++ b/dom/media/android/AndroidMediaReader.cpp
@@ -94,7 +94,7 @@ nsresult AndroidMediaReader::ReadMetadata(MediaInfo* aInfo,
 RefPtr<ShutdownPromise>
 AndroidMediaReader::Shutdown()
 {
-  ResetDecode(AUDIO_VIDEO);
+  ResetDecode();
   if (mPlugin) {
     GetAndroidMediaPluginHost()->DestroyDecoder(mPlugin);
     mPlugin = nullptr;
@@ -104,14 +104,14 @@ AndroidMediaReader::Shutdown()
 }
 
 // Resets all state related to decoding, emptying all buffers etc.
-nsresult AndroidMediaReader::ResetDecode(TargetQueues aQueues)
+nsresult AndroidMediaReader::ResetDecode(TrackSet aTracks)
 {
   if (mLastVideoFrame) {
     mLastVideoFrame = nullptr;
   }
   mSeekRequest.DisconnectIfExists();
   mSeekPromise.RejectIfExists(NS_OK, __func__);
-  return MediaDecoderReader::ResetDecode(aQueues);
+  return MediaDecoderReader::ResetDecode(aTracks);
 }
 
 bool AndroidMediaReader::DecodeVideoFrame(bool &aKeyframeSkip,
diff --git a/dom/media/android/AndroidMediaReader.h b/dom/media/android/AndroidMediaReader.h
index 1b5b0c49a37d..195ea869f525 100644
--- a/dom/media/android/AndroidMediaReader.h
+++ b/dom/media/android/AndroidMediaReader.h
@@ -42,7 +42,8 @@ public:
   AndroidMediaReader(AbstractMediaDecoder* aDecoder,
                      const nsACString& aContentType);
 
-  nsresult ResetDecode(TargetQueues aQueues) override;
+  nsresult ResetDecode(TrackSet aTracks = TrackSet(TrackInfo::kAudioTrack,
+                                                   TrackInfo::kVideoTrack)) override;
 
   bool DecodeAudioData() override;
   bool DecodeVideoFrame(bool &aKeyframeSkip, int64_t aTimeThreshold) override;
diff --git a/dom/media/ogg/OggReader.cpp b/dom/media/ogg/OggReader.cpp
index c61bcd009521..8229bbedd9c3 100644
--- a/dom/media/ogg/OggReader.cpp
+++ b/dom/media/ogg/OggReader.cpp
@@ -169,17 +169,17 @@ nsresult OggReader::Init() {
   return NS_OK;
 }
 
-nsresult OggReader::ResetDecode(TargetQueues aQueues)
+nsresult OggReader::ResetDecode(TrackSet aTracks)
 {
-  return ResetDecode(false, aQueues);
+  return ResetDecode(false, aTracks);
 }
 
-nsresult OggReader::ResetDecode(bool start, TargetQueues aQueues)
+nsresult OggReader::ResetDecode(bool start, TrackSet aTracks)
 {
   MOZ_ASSERT(OnTaskQueue());
   nsresult res = NS_OK;
 
-  if (NS_FAILED(MediaDecoderReader::ResetDecode(aQueues))) {
+  if (NS_FAILED(MediaDecoderReader::ResetDecode(aTracks))) {
     res = NS_ERROR_FAILURE;
   }
 
diff --git a/dom/media/ogg/OggReader.h b/dom/media/ogg/OggReader.h
index 2c5994085421..34e5fa284f4b 100644
--- a/dom/media/ogg/OggReader.h
+++ b/dom/media/ogg/OggReader.h
@@ -51,7 +51,8 @@ protected:
 
 public:
   nsresult Init() override;
-  nsresult ResetDecode(TargetQueues aQueues = AUDIO_VIDEO) override;
+  nsresult ResetDecode(TrackSet aTracks = TrackSet(TrackInfo::kAudioTrack,
+                                                   TrackInfo::kVideoTrack)) override;
   bool DecodeAudioData() override;
 
   // If the Theora granulepos has not been captured, it may read several packets
@@ -86,7 +87,9 @@ private:
 
   // Specialized Reset() method to signal if the seek is
   // to the start of the stream.
-  nsresult ResetDecode(bool start, TargetQueues aQueues = AUDIO_VIDEO);
+  nsresult ResetDecode(bool start,
+                       TrackSet aTracks = TrackSet(TrackInfo::kAudioTrack,
+                                                   TrackInfo::kVideoTrack));
 
   nsresult SeekInternal(int64_t aTime, int64_t aEndTime);
 
diff --git a/dom/media/omx/MediaOmxReader.cpp b/dom/media/omx/MediaOmxReader.cpp
index d12f66ca6012..5da68bbdd1d5 100644
--- a/dom/media/omx/MediaOmxReader.cpp
+++ b/dom/media/omx/MediaOmxReader.cpp
@@ -176,7 +176,7 @@ void MediaOmxReader::ReleaseMediaResources()
   mMediaResourceRequest.DisconnectIfExists();
   mMetadataPromise.RejectIfExists(ReadMetadataFailureReason::METADATA_ERROR, __func__);
 
-  ResetDecode(AUDIO_VIDEO);
+  ResetDecode();
   // Before freeing a video codec, all video buffers needed to be released
   // even from graphics pipeline.
   VideoFrameContainer* container = mDecoder->GetVideoFrameContainer();
diff --git a/dom/media/omx/MediaOmxReader.h b/dom/media/omx/MediaOmxReader.h
index 24b195a722e5..c9dfc9adad2d 100644
--- a/dom/media/omx/MediaOmxReader.h
+++ b/dom/media/omx/MediaOmxReader.h
@@ -74,11 +74,11 @@ protected:
   void NotifyDataArrivedInternal() override;
 public:
 
-  nsresult ResetDecode(TargetQueues aQueues) override
+  nsresult ResetDecoder(TrackSet aTracks) override;
   {
     mSeekRequest.DisconnectIfExists();
     mSeekPromise.RejectIfExists(NS_OK, __func__);
-    return MediaDecoderReader::ResetDecode(aQueues);
+    return MediaDecoderReader::ResetDecode(aTracks);
   }
 
   bool DecodeAudioData() override;
diff --git a/dom/media/raw/RawReader.cpp b/dom/media/raw/RawReader.cpp
index 3b1a0c05276d..b10f5fe287d0 100644
--- a/dom/media/raw/RawReader.cpp
+++ b/dom/media/raw/RawReader.cpp
@@ -27,10 +27,10 @@ RawReader::~RawReader()
   MOZ_COUNT_DTOR(RawReader);
 }
 
-nsresult RawReader::ResetDecode(TargetQueues aQueues)
+nsresult RawReader::ResetDecode(TrackSet aTracks)
 {
   mCurrentFrame = 0;
-  return MediaDecoderReader::ResetDecode(aQueues);
+  return MediaDecoderReader::ResetDecode(aTracks);
 }
 
 nsresult RawReader::ReadMetadata(MediaInfo* aInfo,
diff --git a/dom/media/raw/RawReader.h b/dom/media/raw/RawReader.h
index 0c7696893cc8..bc3d2eaf67fc 100644
--- a/dom/media/raw/RawReader.h
+++ b/dom/media/raw/RawReader.h
@@ -20,7 +20,7 @@ protected:
   ~RawReader();
 
 public:
-  nsresult ResetDecode(TargetQueues aQueues) override;
+  nsresult ResetDecode(TrackSet aTracks) override;
   bool DecodeAudioData() override;
 
   bool DecodeVideoFrame(bool &aKeyframeSkip,