--- a/dom/media/MediaDecoderStateMachine.cpp
+++ b/dom/media/MediaDecoderStateMachine.cpp
@@ -1162,25 +1162,21 @@ public:
     MOZ_ASSERT(!mDoneAudioSeeking || !mDoneVideoSeeking,
                "Seek shouldn't be finished");
 
     RequestVideoData();
   }
 
   void DoSeek() override
   {
-    mDoneAudioSeeking = !Info().HasAudio() || mSeekJob.mTarget->IsVideoOnly();
+    mDoneAudioSeeking = !Info().HasAudio();
     mDoneVideoSeeking = !Info().HasVideo();
 
-    if (mSeekJob.mTarget->IsVideoOnly()) {
-      mMaster->ResetDecode(TrackInfo::kVideoTrack);
-    } else {
-      mMaster->ResetDecode();
-      mMaster->StopMediaSink();
-    }
+    mMaster->ResetDecode();
+    mMaster->StopMediaSink();
 
     DemuxerSeek();
   }
 
   TimeUnit CalculateNewCurrentTime() const override
   {
     const auto seekTime = mSeekJob.mTarget->GetTime();
 
@@ -1790,16 +1786,27 @@ public:
 
   void HandleAudioWaited(MediaData::Type aType) override
   {
     MOZ_ASSERT(!mDoneAudioSeeking || !mDoneVideoSeeking,
                "Seek shouldn't be finished");
 
     // Ignore pending requests from video-only seek.
   }
+
+  void DoSeek() override
+  {
+    // TODO: keep decoding audio.
+    mDoneAudioSeeking = true;
+    mDoneVideoSeeking = !Info().HasVideo();
+
+    mMaster->ResetDecode(TrackInfo::kVideoTrack);
+
+    DemuxerSeek();
+  }
 };
 
 RefPtr<MediaDecoder::SeekPromise>
 MediaDecoderStateMachine::DormantState::HandleSeek(SeekTarget aTarget)
 {
   if (aTarget.IsNextFrame()) {
     // NextFrameSeekingState doesn't reset the decoder unlike
     // AccurateSeekingState. So we first must come out of dormant by seeking to