diff --git a/packager/media/event/hls_notify_muxer_listener.cc b/packager/media/event/hls_notify_muxer_listener.cc
index 1668f468a6..96007b5d4d 100644
--- a/packager/media/event/hls_notify_muxer_listener.cc
+++ b/packager/media/event/hls_notify_muxer_listener.cc
@@ -16,9 +16,15 @@
 namespace shaka {
 namespace media {
 
-HlsNotifyMuxerListener::HlsNotifyMuxerListener(const std::string& playlist_name,
-                                               hls::HlsNotifier* hls_notifier)
-    : playlist_name_(playlist_name), hls_notifier_(hls_notifier) {
+HlsNotifyMuxerListener::HlsNotifyMuxerListener(
+    const std::string& playlist_name,
+    const std::string& ext_x_media_name,
+    const std::string& ext_x_media_group_id,
+    hls::HlsNotifier* hls_notifier)
+    : playlist_name_(playlist_name),
+      ext_x_media_name_(ext_x_media_name),
+      ext_x_media_group_id_(ext_x_media_group_id),
+      hls_notifier_(hls_notifier) {
   DCHECK(hls_notifier);
 }
 
@@ -48,13 +54,12 @@ void HlsNotifyMuxerListener::OnMediaStart(const MuxerOptions& muxer_options,
     return;
   }
   const bool result = hls_notifier_->NotifyNewStream(
-      media_info, playlist_name_, muxer_options.hls_name,
-      muxer_options.hls_group_id, &stream_id_);
+      media_info, playlist_name_, ext_x_media_name_, ext_x_media_group_id_,
+      &stream_id_);
   LOG_IF(WARNING, !result) << "Failed to notify new stream.";
 }
 
-void HlsNotifyMuxerListener::OnSampleDurationReady(uint32_t sample_duration) {
-}
+void HlsNotifyMuxerListener::OnSampleDurationReady(uint32_t sample_duration) {}
 
 void HlsNotifyMuxerListener::OnMediaEnd(bool has_init_range,
                                         uint64_t init_range_start,
@@ -64,8 +69,9 @@ void HlsNotifyMuxerListener::OnMediaEnd(bool has_init_range,
                                         uint64_t index_range_end,
                                         float duration_seconds,
                                         uint64_t file_size) {
-  const bool result = hls_notifier_->Flush();
-  LOG_IF(WARNING, !result) << "Failed to flush.";
+  // Don't flush the notifier here. Flushing here would write all the playlists
+  // before all Media Playlists are read. Which could cause problems
+  // setting the correct EXT-X-TARGETDURATION.
 }
 
 void HlsNotifyMuxerListener::OnNewSegment(const std::string& file_name,
diff --git a/packager/media/event/hls_notify_muxer_listener.h b/packager/media/event/hls_notify_muxer_listener.h
index 86500155cf..5390295f14 100644
--- a/packager/media/event/hls_notify_muxer_listener.h
+++ b/packager/media/event/hls_notify_muxer_listener.h
@@ -24,8 +24,16 @@ namespace media {
 class HlsNotifyMuxerListener : public MuxerListener {
  public:
   /// @param playlist_name is the name of the playlist for the muxer's stream.
+  /// @param ext_x_media_name is the name of this playlist. This is the
+  ///        value of the NAME attribute for EXT-X-MEDIA, it is not the same as
+  ///        @a playlist_name. This may be empty for video.
+  /// @param ext_x_media_group_id is the group ID for this playlist. This is the
+  ///        value of GROUP-ID attribute for EXT-X-MEDIA. This may be empty for
+  ///        video.
   /// @param hls_notifier used by this listener. Ownership does not transfer.
   HlsNotifyMuxerListener(const std::string& playlist_name,
+                         const std::string& ext_x_media_name,
+                         const std::string& ext_x_media_group_id,
                          hls::HlsNotifier* hls_notifier);
   ~HlsNotifyMuxerListener() override;
 
@@ -58,6 +66,8 @@ class HlsNotifyMuxerListener : public MuxerListener {
 
  private:
   const std::string playlist_name_;
+  const std::string ext_x_media_name_;
+  const std::string ext_x_media_group_id_;
   hls::HlsNotifier* const hls_notifier_;
   uint32_t stream_id_ = 0;
 
diff --git a/packager/media/event/hls_notify_muxer_listener_unittest.cc b/packager/media/event/hls_notify_muxer_listener_unittest.cc
index 87d1e05a4e..9b09543e32 100644
--- a/packager/media/event/hls_notify_muxer_listener_unittest.cc
+++ b/packager/media/event/hls_notify_muxer_listener_unittest.cc
@@ -66,13 +66,18 @@ const uint8_t kAnyData[] = {
 const bool kInitialEncryptionInfo = true;
 
 const char kDefaultPlaylistName[] = "default_playlist.m3u8";
+const char kDefaultName[] = "DEFAULTNAME";
+const char kDefaultGroupId[] = "DEFAULTGROUPID";
 
 }  // namespace
 
 class HlsNotifyMuxerListenerTest : public ::testing::Test {
  protected:
   HlsNotifyMuxerListenerTest()
-      : listener_(kDefaultPlaylistName, &mock_notifier_) {}
+      : listener_(kDefaultPlaylistName,
+                  kDefaultName,
+                  kDefaultGroupId,
+                  &mock_notifier_) {}
 
   MockHlsNotifier mock_notifier_;
   HlsNotifyMuxerListener listener_;
@@ -100,29 +105,27 @@ TEST_F(HlsNotifyMuxerListenerTest, OnEncryptionInfoReady) {
 }
 
 TEST_F(HlsNotifyMuxerListenerTest, OnMediaStart) {
-  MuxerOptions muxer_options;
-  muxer_options.hls_name = "Name";
-  muxer_options.hls_group_id = "GroupID";
-  SetDefaultMuxerOptionsValues(&muxer_options);
   VideoStreamInfoParameters video_params = GetDefaultVideoStreamInfoParams();
   scoped_refptr<StreamInfo> video_stream_info =
       CreateVideoStreamInfo(video_params);
 
   EXPECT_CALL(mock_notifier_,
-              NotifyNewStream(_, StrEq(kDefaultPlaylistName), StrEq("Name"),
-                              StrEq("GroupID"), _))
+              NotifyNewStream(_, StrEq(kDefaultPlaylistName),
+                              StrEq("DEFAULTNAME"), StrEq("DEFAULTGROUPID"), _))
       .WillOnce(Return(true));
 
+  MuxerOptions muxer_options;
   listener_.OnMediaStart(muxer_options, *video_stream_info, 90000,
                          MuxerListener::kContainerMpeg2ts);
 }
 
+// Make sure it doesn't crash.
 TEST_F(HlsNotifyMuxerListenerTest, OnSampleDurationReady) {
   listener_.OnSampleDurationReady(2340);
 }
 
+// Make sure it doesn't crash.
 TEST_F(HlsNotifyMuxerListenerTest, OnMediaEnd) {
-  EXPECT_CALL(mock_notifier_, Flush()).WillOnce(Return(true));
   // None of these values matter, they are not used.
   listener_.OnMediaEnd(false, 0, 0, false, 0, 0, 0, 0);
 }