--- a/dom/html/HTMLMediaElement.cpp
+++ b/dom/html/HTMLMediaElement.cpp
@@ -2915,16 +2915,17 @@ HTMLMediaElement::HTMLMediaElement(alrea
 
   MOZ_ASSERT(NS_IsMainThread());
   mWatchManager.Watch(mDownloadSuspendedByCache, &HTMLMediaElement::UpdateReadyStateInternal);
   // Paradoxically, there is a self-edge whereby UpdateReadyStateInternal refuses
   // to run until mReadyState reaches at least HAVE_METADATA by some other means.
   mWatchManager.Watch(mReadyState, &HTMLMediaElement::UpdateReadyStateInternal);
 
   mShutdownObserver->Subscribe(this);
+  CreateAudioChannelAgent();
 }
 
 HTMLMediaElement::~HTMLMediaElement()
 {
   NS_ASSERTION(!mHasSelfReference,
                "How can we be destroyed if we're still holding a self reference?");
 
   mShutdownObserver->Unsubscribe();
@@ -5774,23 +5775,16 @@ HTMLMediaElement::IsPlayingThroughTheAud
 
 void
 HTMLMediaElement::UpdateAudioChannelPlayingState()
 {
   bool playingThroughTheAudioChannel = IsPlayingThroughTheAudioChannel();
 
   if (playingThroughTheAudioChannel != mPlayingThroughTheAudioChannel) {
     mPlayingThroughTheAudioChannel = playingThroughTheAudioChannel;
-
-    // If we are not playing, we don't need to create a new audioChannelAgent.
-    if (!mAudioChannelAgent && !mPlayingThroughTheAudioChannel) {
-       return;
-    }
-
-    CreateAudioChannelAgent();
     NotifyAudioChannelAgent(mPlayingThroughTheAudioChannel);
   }
 }
 
 void
 HTMLMediaElement::NotifyAudioChannelAgent(bool aPlaying)
 {
   // This is needed to pass nsContentUtils::IsCallerChrome().
@@ -5811,17 +5805,16 @@ HTMLMediaElement::NotifyAudioChannelAgen
     if (NS_WARN_IF(NS_FAILED(rv))) {
       return;
     }
 
     WindowVolumeChanged(config.mVolume, config.mMuted);
     WindowSuspendChanged(config.mSuspend);
   } else {
     mAudioChannelAgent->NotifyStoppedPlaying();
-    mAudioChannelAgent = nullptr;
   }
 }
 
 NS_IMETHODIMP
 HTMLMediaElement::WindowVolumeChanged(float aVolume, bool aMuted)
 {
   MOZ_LOG(AudioChannelService::GetAudioChannelLog(), LogLevel::Debug,
          ("HTMLMediaElement, WindowVolumeChanged, this = %p, "

--- a/dom/html/HTMLMediaElement.h
+++ b/dom/html/HTMLMediaElement.h
@@ -1217,17 +1217,18 @@ protected:
   TextTrackManager* GetOrCreateTextTrackManager();
 
   // Recomputes ready state and fires events as necessary based on current state.
   void UpdateReadyStateInternal();
 
   // Notifies the audio channel agent when the element starts or stops playing.
   void NotifyAudioChannelAgent(bool aPlaying);
 
-  // Creates the audio channel agent.
+  // Creates the audio channel agent in the beginning and this agent would be
+  // used to communicate with the AudioChannelService.
   void CreateAudioChannelAgent();
 
   // Determine if the element should be paused because of suspend conditions.
   bool ShouldElementBePaused();
 
   // Create or destroy the captured stream depend on mAudioCapturedByWindow.
   void AudioCaptureStreamChangeIfNeeded();
 
@@ -1622,17 +1623,18 @@ protected:
   // Is this media element playing?
   bool mPlayingThroughTheAudioChannel;
 
   // Disable the video playback by track selection. This flag might not be
   // enough if we ever expand the ability of supporting multi-tracks video
   // playback.
   bool mDisableVideo;
 
-  // An agent used to join audio channel service.
+  // An agent used to join audio channel service and its life cycle would equal
+  // to media element.
   RefPtr<AudioChannelAgent> mAudioChannelAgent;
 
   RefPtr<TextTrackManager> mTextTrackManager;
 
   RefPtr<AudioTrackList> mAudioTrackList;
 
   RefPtr<VideoTrackList> mVideoTrackList;