Update ExoPlayer.

21 files changed, 1302 insertions, 1653 deletions

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/PostVideoActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/PostVideoActivity.java
index 8477942e..d9e36ee5 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/PostVideoActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/PostVideoActivity.java
@@ -27,9 +27,9 @@ import androidx.core.content.ContextCompat;
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.RequestManager;
 import com.bumptech.glide.request.RequestOptions;
-import com.google.android.exoplayer2.ExoPlayerFactory;
+import com.google.android.exoplayer2.ExoPlayer;
+import com.google.android.exoplayer2.MediaItem;
 import com.google.android.exoplayer2.Player;
-import com.google.android.exoplayer2.SimpleExoPlayer;
 import com.google.android.exoplayer2.source.ProgressiveMediaSource;
 import com.google.android.exoplayer2.ui.PlayerView;
 import com.google.android.exoplayer2.upstream.DataSource;
@@ -189,7 +189,7 @@ public class PostVideoActivity extends BaseActivity implements FlairBottomSheetF
     private FlairBottomSheetFragment mFlairSelectionBottomSheetFragment;
     private Snackbar mPostingSnackbar;
     private DataSource.Factory dataSourceFactory;
-    private SimpleExoPlayer player;
+    private ExoPlayer player;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -216,7 +216,7 @@ public class PostVideoActivity extends BaseActivity implements FlairBottomSheetF
 
         mGlide = Glide.with(this);
 
-        player = ExoPlayerFactory.newSimpleInstance(this);
+        player = new ExoPlayer.Builder(this).build();
         videoPlayerView.setPlayer(player);
         dataSourceFactory = new DefaultDataSourceFactory(this,
                 Util.getUserAgent(this, "Infinity"));
@@ -491,7 +491,7 @@ public class PostVideoActivity extends BaseActivity implements FlairBottomSheetF
         constraintLayout.setVisibility(View.GONE);
         selectAgainTextView.setVisibility(View.VISIBLE);
         videoPlayerView.setVisibility(View.VISIBLE);
-        player.prepare(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(videoUri));
+        player.prepare(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(MediaItem.fromUri(videoUri)));
         player.setPlayWhenReady(true);
         wasPlaying = true;
     }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewVideoActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewVideoActivity.java
index 2fab98e7..39398315 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewVideoActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewVideoActivity.java
@@ -7,6 +7,7 @@ import static androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_YES;
 
 import android.Manifest;
 import android.app.AlertDialog;
+import android.app.Dialog;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.pm.ActivityInfo;
@@ -24,6 +25,7 @@ import android.os.Bundle;
 import android.os.Handler;
 import android.provider.Settings;
 import android.text.Html;
+import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.OrientationEventListener;
@@ -45,29 +47,26 @@ import androidx.core.app.ActivityCompat;
 import androidx.core.content.ContextCompat;
 
 import com.google.android.exoplayer2.C;
-import com.google.android.exoplayer2.ExoPlayerFactory;
+import com.google.android.exoplayer2.ExoPlayer;
 import com.google.android.exoplayer2.Format;
+import com.google.android.exoplayer2.MediaItem;
 import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.exoplayer2.Player;
-import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.Tracks;
 import com.google.android.exoplayer2.source.ProgressiveMediaSource;
-import com.google.android.exoplayer2.source.TrackGroupArray;
 import com.google.android.exoplayer2.source.hls.HlsMediaSource;
-import com.google.android.exoplayer2.trackselection.AdaptiveTrackSelection;
 import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
-import com.google.android.exoplayer2.trackselection.TrackSelection;
-import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import com.google.android.exoplayer2.ui.PlayerControlView;
 import com.google.android.exoplayer2.ui.TrackSelectionDialogBuilder;
 import com.google.android.exoplayer2.upstream.DataSource;
-import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
-import com.google.android.exoplayer2.upstream.DefaultHttpDataSourceFactory;
-import com.google.android.exoplayer2.upstream.cache.CacheDataSourceFactory;
+import com.google.android.exoplayer2.upstream.DefaultHttpDataSource;
+import com.google.android.exoplayer2.upstream.cache.CacheDataSource;
 import com.google.android.exoplayer2.upstream.cache.SimpleCache;
 import com.google.android.exoplayer2.util.MimeTypes;
-import com.google.android.exoplayer2.video.VideoListener;
+import com.google.android.exoplayer2.video.VideoSize;
 import com.google.android.material.bottomappbar.BottomAppBar;
 import com.google.android.material.snackbar.Snackbar;
+import com.google.common.collect.ImmutableList;
 import com.otaliastudios.zoom.ZoomEngine;
 import com.otaliastudios.zoom.ZoomSurfaceView;
 
@@ -176,7 +175,7 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
     public Typeface typeface;
 
     private Uri mVideoUri;
-    private SimpleExoPlayer player;
+    private ExoPlayer player;
     private DefaultTrackSelector trackSelector;
     private DataSource.Factory dataSourceFactory;
 
@@ -403,7 +402,7 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
         String postTitle = intent.getStringExtra(EXTRA_POST_TITLE);
         setSmallTitle(postTitle);
 
-        playerControlView.setVisibilityListener(visibility -> {
+        playerControlView.addVisibilityListener(visibility -> {
             switch (visibility) {
                 case View.GONE:
                     getWindow().getDecorView().setSystemUiVisibility(
@@ -422,21 +421,20 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
             }
         });
 
-        TrackSelection.Factory videoTrackSelectionFactory = new AdaptiveTrackSelection.Factory();
-        trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);
+        trackSelector = new DefaultTrackSelector(this);
         if (videoType == VIDEO_TYPE_NORMAL && isDataSavingMode && dataSavingModeDefaultResolution > 0) {
             trackSelector.setParameters(
                     trackSelector.buildUponParameters()
                             .setMaxVideoSize(dataSavingModeDefaultResolution, dataSavingModeDefaultResolution));
         }
-        player = ExoPlayerFactory.newSimpleInstance(this, trackSelector);
+        player = new ExoPlayer.Builder(this).setTrackSelector(trackSelector).build();
 
         playerControlView.setPlayer(player);
 
-        player.addVideoListener(new VideoListener() {
+        player.addListener(new Player.Listener() {
             @Override
-            public void onVideoSizeChanged(int width, int height, int unappliedRotationDegrees, float pixelWidthHeightRatio) {
-                zoomSurfaceView.setContentSize(width, height);
+            public void onVideoSizeChanged(VideoSize videoSize) {
+                zoomSurfaceView.setContentSize(videoSize.width, videoSize.height);
             }
         });
         zoomSurfaceView.addCallback(new ZoomSurfaceView.Callback() {
@@ -506,9 +504,10 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
             if (mVideoUri == null) {
                 loadStreamableVideo(shortCode, savedInstanceState);
             } else {
-                dataSourceFactory = new CacheDataSourceFactory(mSimpleCache,
-                        new DefaultDataSourceFactory(ViewVideoActivity.this, APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
-                player.prepare(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(mVideoUri));
+                dataSourceFactory = new CacheDataSource.Factory().setCache(mSimpleCache)
+                        .setUpstreamDataSourceFactory(new DefaultHttpDataSource.Factory().setUserAgent(APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
+                player.prepare();
+                player.setMediaSource(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(MediaItem.fromUri(mVideoUri)));
                 preparePlayer(savedInstanceState);
             }
         } else if (videoType == VIDEO_TYPE_V_REDD_IT) {
@@ -537,9 +536,10 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
                     loadGfycatOrRedgifsVideo(redgifsRetrofit, gfycatId, false, savedInstanceState, false);
                 }
             } else {
-                dataSourceFactory = new CacheDataSourceFactory(mSimpleCache,
-                        new DefaultDataSourceFactory(ViewVideoActivity.this, APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
-                player.prepare(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(mVideoUri));
+                dataSourceFactory = new CacheDataSource.Factory().setCache(mSimpleCache)
+                        .setUpstreamDataSourceFactory(new DefaultHttpDataSource.Factory().setUserAgent(APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
+                player.prepare();
+                player.setMediaSource(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(MediaItem.fromUri(mVideoUri)));
                 preparePlayer(savedInstanceState);
             }
         } else if (videoType == VIDEO_TYPE_DIRECT || videoType == VIDEO_TYPE_IMGUR) {
@@ -550,10 +550,11 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
                 videoFileName = "imgur-" + FilenameUtils.getName(videoDownloadUrl);
             }
             // Produces DataSource instances through which media data is loaded.
-            dataSourceFactory = new CacheDataSourceFactory(mSimpleCache,
-                    new DefaultHttpDataSourceFactory(APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
+            dataSourceFactory = new CacheDataSource.Factory().setCache(mSimpleCache)
+                    .setUpstreamDataSourceFactory(new DefaultHttpDataSource.Factory().setUserAgent(APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
             // Prepare the player with the source.
-            player.prepare(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(mVideoUri));
+            player.prepare();
+            player.setMediaSource(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(MediaItem.fromUri(mVideoUri)));
             preparePlayer(savedInstanceState);
         } else {
             videoDownloadUrl = intent.getStringExtra(EXTRA_VIDEO_DOWNLOAD_URL);
@@ -561,10 +562,11 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
             id = intent.getStringExtra(EXTRA_ID);
             videoFileName = subredditName + "-" + id + ".mp4";
             // Produces DataSource instances through which media data is loaded.
-            dataSourceFactory = new CacheDataSourceFactory(mSimpleCache,
-                    new DefaultHttpDataSourceFactory(APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
+            dataSourceFactory = new CacheDataSource.Factory().setCache(mSimpleCache)
+                    .setUpstreamDataSourceFactory(new DefaultHttpDataSource.Factory().setUserAgent(APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
             // Prepare the player with the source.
-            player.prepare(new HlsMediaSource.Factory(dataSourceFactory).createMediaSource(mVideoUri));
+            player.prepare();
+            player.setMediaSource(new HlsMediaSource.Factory(dataSourceFactory).createMediaSource(MediaItem.fromUri(mVideoUri)));
             preparePlayer(savedInstanceState);
         }
     }
@@ -615,25 +617,29 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
             muteButton.setImageResource(R.drawable.ic_unmute_24dp);
         }
 
-        player.addListener(new Player.EventListener() {
+        player.addListener(new Player.Listener() {
             @Override
-            public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
+            public void onTracksChanged(@NonNull Tracks tracks) {
+                ImmutableList<Tracks.Group> trackGroups = tracks.getGroups();
                 if (!trackGroups.isEmpty()) {
                     if (videoType == VIDEO_TYPE_NORMAL) {
                         hdButton.setVisibility(View.VISIBLE);
                         hdButton.setOnClickListener(view -> {
-                            TrackSelectionDialogBuilder builder = new TrackSelectionDialogBuilder(ViewVideoActivity.this, getString(R.string.select_video_quality), trackSelector, 0);
+                            TrackSelectionDialogBuilder builder = new TrackSelectionDialogBuilder(ViewVideoActivity.this, getString(R.string.select_video_quality), player, 0);
                             builder.setShowDisableOption(true);
                             builder.setAllowAdaptiveSelections(false);
-                            AlertDialog alertDialog = builder.build();
-                            alertDialog.show();
-                            alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(mCustomThemeWrapper.getPrimaryTextColor());
-                            alertDialog.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(mCustomThemeWrapper.getPrimaryTextColor());
+                            Dialog dialog = builder.build();
+                            dialog.show();
+                            if (dialog instanceof AlertDialog) {
+                                Log.i("asfadsf", "asdfasdf");
+                                ((AlertDialog) dialog).getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(mCustomThemeWrapper.getPrimaryTextColor());
+                                ((AlertDialog) dialog).getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(mCustomThemeWrapper.getPrimaryTextColor());
+                            }
                         });
                     }
 
-                    for (int i = 0; i < trackGroups.length; i++) {
-                        String mimeType = trackGroups.get(i).getFormat(0).sampleMimeType;
+                    for (int i = 0; i < trackGroups.size(); i++) {
+                        String mimeType = trackGroups.get(i).getTrackFormat(0).sampleMimeType;
                         if (mimeType != null && mimeType.contains("audio")) {
                             muteButton.setVisibility(View.VISIBLE);
                             muteButton.setOnClickListener(view -> {
@@ -688,10 +694,11 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
                             progressBar.setVisibility(View.GONE);
                             mVideoUri = Uri.parse(webm);
                             videoDownloadUrl = mp4;
-                            dataSourceFactory = new CacheDataSourceFactory(mSimpleCache,
-                                    new DefaultDataSourceFactory(ViewVideoActivity.this, APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
+                            dataSourceFactory = new CacheDataSource.Factory().setCache(mSimpleCache)
+                                    .setUpstreamDataSourceFactory(new DefaultHttpDataSource.Factory().setUserAgent(APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
                             preparePlayer(savedInstanceState);
-                            player.prepare(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(mVideoUri));
+                            player.prepare();
+                            player.setMediaSource(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(MediaItem.fromUri(mVideoUri)));
                         }
 
                         @Override
@@ -717,10 +724,11 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
                             progressBar.setVisibility(View.GONE);
                             mVideoUri = Uri.parse(webm);
                             videoDownloadUrl = mp4;
-                            dataSourceFactory = new CacheDataSourceFactory(mSimpleCache,
-                                    new DefaultDataSourceFactory(ViewVideoActivity.this, APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
+                            dataSourceFactory = new CacheDataSource.Factory().setCache(mSimpleCache)
+                                    .setUpstreamDataSourceFactory(new DefaultHttpDataSource.Factory().setUserAgent(APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
                             preparePlayer(savedInstanceState);
-                            player.prepare(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(mVideoUri));
+                            player.prepare();
+                            player.setMediaSource(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(MediaItem.fromUri(mVideoUri)));
                         }
 
                         @Override
@@ -782,10 +790,11 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
                                         videoType = VIDEO_TYPE_IMGUR;
                                         videoFileName = "imgur-" + FilenameUtils.getName(videoDownloadUrl);
                                         // Produces DataSource instances through which media data is loaded.
-                                        dataSourceFactory = new CacheDataSourceFactory(mSimpleCache,
-                                                new DefaultHttpDataSourceFactory(APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
+                                        dataSourceFactory = new CacheDataSource.Factory().setCache(mSimpleCache)
+                                                .setUpstreamDataSourceFactory(new DefaultHttpDataSource.Factory().setUserAgent(APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
                                         // Prepare the player with the source.
-                                        player.prepare(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(mVideoUri));
+                                        player.prepare();
+                                        player.setMediaSource(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(MediaItem.fromUri(mVideoUri)));
                                         preparePlayer(savedInstanceState);
                                     } else {
                                         progressBar.setVisibility(View.GONE);
@@ -797,11 +806,12 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
 
                                             videoFileName = subredditName + "-" + id + ".mp4";
                                             // Produces DataSource instances through which media data is loaded.
-                                            dataSourceFactory = new CacheDataSourceFactory(mSimpleCache,
-                                                    new DefaultHttpDataSourceFactory(APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
+                                            dataSourceFactory = new CacheDataSource.Factory().setCache(mSimpleCache)
+                                                    .setUpstreamDataSourceFactory(new DefaultHttpDataSource.Factory().setUserAgent(APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
                                             // Prepare the player with the source.
                                             preparePlayer(savedInstanceState);
-                                            player.prepare(new HlsMediaSource.Factory(dataSourceFactory).createMediaSource(mVideoUri));
+                                            player.prepare();
+                                            player.setMediaSource(new HlsMediaSource.Factory(dataSourceFactory).createMediaSource(MediaItem.fromUri(mVideoUri)));
                                         } else {
                                             Toast.makeText(ViewVideoActivity.this, R.string.error_fetching_v_redd_it_video_cannot_get_video_url, Toast.LENGTH_LONG).show();
                                         }
@@ -839,10 +849,11 @@ public class ViewVideoActivity extends AppCompatActivity implements CustomFontRe
                         progressBar.setVisibility(View.GONE);
                         videoDownloadUrl = streamableVideo.mp4 == null ? streamableVideo.mp4Mobile.url : streamableVideo.mp4.url;
                         mVideoUri = Uri.parse(videoDownloadUrl);
-                        dataSourceFactory = new CacheDataSourceFactory(mSimpleCache,
-                                new DefaultDataSourceFactory(ViewVideoActivity.this, APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
+                        dataSourceFactory = new CacheDataSource.Factory().setCache(mSimpleCache)
+                                .setUpstreamDataSourceFactory(new DefaultHttpDataSource.Factory().setUserAgent(APIUtils.getRedgifsUserAgent(ViewVideoActivity.this)));
                         preparePlayer(savedInstanceState);
-                        player.prepare(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(mVideoUri));
+                        player.prepare();
+                        player.setMediaSource(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(MediaItem.fromUri(mVideoUri)));
                     }
 
                     @Override
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/HistoryPostRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/HistoryPostRecyclerViewAdapter.java
index 2eba5f0c..2f3f9923 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/HistoryPostRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/HistoryPostRecyclerViewAdapter.java
@@ -42,10 +42,12 @@ import com.bumptech.glide.load.engine.GlideException;
 import com.bumptech.glide.request.RequestListener;
 import com.bumptech.glide.request.RequestOptions;
 import com.bumptech.glide.request.target.Target;
+import com.google.android.exoplayer2.Tracks;
 import com.google.android.exoplayer2.source.TrackGroupArray;
 import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import com.google.android.exoplayer2.ui.AspectRatioFrameLayout;
 import com.google.android.exoplayer2.ui.PlayerView;
+import com.google.common.collect.ImmutableList;
 import com.libRG.CustomTextView;
 
 import org.greenrobot.eventbus.EventBus;
@@ -2755,10 +2757,11 @@ public class HistoryPostRecyclerViewAdapter extends PagingDataAdapter<Post, Recy
                 helper = new ExoPlayerViewHelper(this, mediaUri, null, mExoCreator);
                 helper.addEventListener(new Playable.DefaultEventListener() {
                     @Override
-                    public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
+                    public void onTracksChanged(@NonNull Tracks tracks) {
+                        ImmutableList<Tracks.Group> trackGroups = tracks.getGroups();
                         if (!trackGroups.isEmpty()) {
-                            for (int i = 0; i < trackGroups.length; i++) {
-                                String mimeType = trackGroups.get(i).getFormat(0).sampleMimeType;
+                            for (int i = 0; i < trackGroups.size(); i++) {
+                                String mimeType = trackGroups.get(i).getTrackFormat(0).sampleMimeType;
                                 if (mimeType != null && mimeType.contains("audio")) {
                                     if (mFragment.getMasterMutingOption() != null) {
                                         volume = mFragment.getMasterMutingOption() ? 0f : 1f;
@@ -4022,10 +4025,11 @@ public class HistoryPostRecyclerViewAdapter extends PagingDataAdapter<Post, Recy
                 helper = new ExoPlayerViewHelper(this, mediaUri, null, mExoCreator);
                 helper.addEventListener(new Playable.DefaultEventListener() {
                     @Override
-                    public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
+                    public void onTracksChanged(@NonNull Tracks tracks) {
+                        ImmutableList<Tracks.Group> trackGroups = tracks.getGroups();
                         if (!trackGroups.isEmpty()) {
-                            for (int i = 0; i < trackGroups.length; i++) {
-                                String mimeType = trackGroups.get(i).getFormat(0).sampleMimeType;
+                            for (int i = 0; i < trackGroups.size(); i++) {
+                                String mimeType = trackGroups.get(i).getTrackFormat(0).sampleMimeType;
                                 if (mimeType != null && mimeType.contains("audio")) {
                                     if (mFragment.getMasterMutingOption() != null) {
                                         volume = mFragment.getMasterMutingOption() ? 0f : 1f;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostDetailRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostDetailRecyclerViewAdapter.java
index 4db8166f..b2687f93 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostDetailRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostDetailRecyclerViewAdapter.java
@@ -40,10 +40,10 @@ import com.bumptech.glide.load.engine.GlideException;
 import com.bumptech.glide.request.RequestListener;
 import com.bumptech.glide.request.RequestOptions;
 import com.bumptech.glide.request.target.Target;
-import com.google.android.exoplayer2.source.TrackGroupArray;
-import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
+import com.google.android.exoplayer2.Tracks;
 import com.google.android.exoplayer2.ui.AspectRatioFrameLayout;
 import com.google.android.exoplayer2.ui.PlayerView;
+import com.google.common.collect.ImmutableList;
 import com.libRG.CustomTextView;
 
 import org.commonmark.ext.gfm.tables.TableBlock;
@@ -1761,10 +1761,11 @@ public class PostDetailRecyclerViewAdapter extends RecyclerView.Adapter<Recycler
                 helper = new ExoPlayerViewHelper(this, mediaUri, null, mExoCreator);
                 helper.addEventListener(new Playable.DefaultEventListener() {
                     @Override
-                    public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
+                    public void onTracksChanged(@NonNull Tracks tracks) {
+                        ImmutableList<Tracks.Group> trackGroups = tracks.getGroups();
                         if (!trackGroups.isEmpty()) {
-                            for (int i = 0; i < trackGroups.length; i++) {
-                                String mimeType = trackGroups.get(i).getFormat(0).sampleMimeType;
+                            for (int i = 0; i < trackGroups.size(); i++) {
+                                String mimeType = trackGroups.get(i).getTrackFormat(0).sampleMimeType;
                                 if (mimeType != null && mimeType.contains("audio")) {
                                     helper.setVolume(volume);
                                     muteButton.setVisibility(View.VISIBLE);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java
index 4bf33ddf..1a25e34e 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java
@@ -42,10 +42,12 @@ import com.bumptech.glide.load.engine.GlideException;
 import com.bumptech.glide.request.RequestListener;
 import com.bumptech.glide.request.RequestOptions;
 import com.bumptech.glide.request.target.Target;
+import com.google.android.exoplayer2.Tracks;
 import com.google.android.exoplayer2.source.TrackGroupArray;
 import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import com.google.android.exoplayer2.ui.AspectRatioFrameLayout;
 import com.google.android.exoplayer2.ui.PlayerView;
+import com.google.common.collect.ImmutableList;
 import com.libRG.CustomTextView;
 
 import org.greenrobot.eventbus.EventBus;
@@ -2860,10 +2862,11 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
                 helper = new ExoPlayerViewHelper(this, mediaUri, null, mExoCreator);
                 helper.addEventListener(new Playable.DefaultEventListener() {
                     @Override
-                    public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
+                    public void onTracksChanged(@NonNull Tracks tracks) {
+                        ImmutableList<Tracks.Group> trackGroups = tracks.getGroups();
                         if (!trackGroups.isEmpty()) {
-                            for (int i = 0; i < trackGroups.length; i++) {
-                                String mimeType = trackGroups.get(i).getFormat(0).sampleMimeType;
+                            for (int i = 0; i < trackGroups.size(); i++) {
+                                String mimeType = trackGroups.get(i).getTrackFormat(0).sampleMimeType;
                                 if (mimeType != null && mimeType.contains("audio")) {
                                     if (mFragment.getMasterMutingOption() != null) {
                                         volume = mFragment.getMasterMutingOption() ? 0f : 1f;
@@ -4175,10 +4178,11 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
                 helper = new ExoPlayerViewHelper(this, mediaUri, null, mExoCreator);
                 helper.addEventListener(new Playable.DefaultEventListener() {
                     @Override
-                    public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
+                    public void onTracksChanged(@NonNull Tracks tracks) {
+                        ImmutableList<Tracks.Group> trackGroups = tracks.getGroups();
                         if (!trackGroups.isEmpty()) {
-                            for (int i = 0; i < trackGroups.length; i++) {
-                                String mimeType = trackGroups.get(i).getFormat(0).sampleMimeType;
+                            for (int i = 0; i < trackGroups.size(); i++) {
+                                String mimeType = trackGroups.get(i).getTrackFormat(0).sampleMimeType;
                                 if (mimeType != null && mimeType.contains("audio")) {
                                     if (mFragment.getMasterMutingOption() != null) {
                                         volume = mFragment.getMasterMutingOption() ? 0f : 1f;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/customviews/LoopAvailableExoCreator.java b/app/src/main/java/ml/docilealligator/infinityforreddit/customviews/LoopAvailableExoCreator.java
index 01fc9a32..560f7b12 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/customviews/LoopAvailableExoCreator.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/customviews/LoopAvailableExoCreator.java
@@ -4,8 +4,8 @@ import android.content.SharedPreferences;
 
 import androidx.annotation.NonNull;
 
+import com.google.android.exoplayer2.ExoPlayer;
 import com.google.android.exoplayer2.Player;
-import com.google.android.exoplayer2.SimpleExoPlayer;
 
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
 import ml.docilealligator.infinityforreddit.videoautoplay.Config;
@@ -22,8 +22,8 @@ public class LoopAvailableExoCreator extends DefaultExoCreator {
 
     @NonNull
     @Override
-    public SimpleExoPlayer createPlayer() {
-        SimpleExoPlayer player = super.createPlayer();
+    public ExoPlayer createPlayer() {
+        ExoPlayer player = super.createPlayer();
         if (sharedPreferences.getBoolean(SharedPreferencesUtils.LOOP_VIDEO, true)) {
             player.setRepeatMode(Player.REPEAT_MODE_ALL);
         } else {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewImgurVideoFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewImgurVideoFragment.java
index a2fcfb9e..b53b3ddb 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewImgurVideoFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewImgurVideoFragment.java
@@ -7,7 +7,6 @@ import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.content.res.Configuration;
 import android.media.AudioManager;
-import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.view.LayoutInflater;
@@ -26,22 +25,21 @@ import androidx.annotation.NonNull;
 import androidx.core.content.ContextCompat;
 import androidx.fragment.app.Fragment;
 
-import com.google.android.exoplayer2.ExoPlayerFactory;
+import com.google.android.exoplayer2.ExoPlayer;
+import com.google.android.exoplayer2.MediaItem;
 import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.exoplayer2.Player;
-import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.Tracks;
 import com.google.android.exoplayer2.source.ProgressiveMediaSource;
-import com.google.android.exoplayer2.source.TrackGroupArray;
-import com.google.android.exoplayer2.trackselection.AdaptiveTrackSelection;
 import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
-import com.google.android.exoplayer2.trackselection.TrackSelection;
-import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import com.google.android.exoplayer2.trackselection.TrackSelector;
 import com.google.android.exoplayer2.ui.PlayerView;
 import com.google.android.exoplayer2.upstream.DataSource;
-import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
-import com.google.android.exoplayer2.util.Util;
+import com.google.android.exoplayer2.upstream.DefaultHttpDataSource;
+import com.google.android.exoplayer2.upstream.cache.CacheDataSource;
+import com.google.android.exoplayer2.upstream.cache.SimpleCache;
 import com.google.android.material.bottomappbar.BottomAppBar;
+import com.google.common.collect.ImmutableList;
 
 import javax.inject.Inject;
 import javax.inject.Named;
@@ -54,6 +52,7 @@ import ml.docilealligator.infinityforreddit.R;
 import ml.docilealligator.infinityforreddit.activities.ViewImgurMediaActivity;
 import ml.docilealligator.infinityforreddit.bottomsheetfragments.PlaybackSpeedBottomSheetFragment;
 import ml.docilealligator.infinityforreddit.services.DownloadMediaService;
+import ml.docilealligator.infinityforreddit.utils.APIUtils;
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
 import ml.docilealligator.infinityforreddit.utils.Utils;
 
@@ -78,7 +77,7 @@ public class ViewImgurVideoFragment extends Fragment {
     ImageView downloadImageView;
     private ViewImgurMediaActivity activity;
     private ImgurMedia imgurMedia;
-    private SimpleExoPlayer player;
+    private ExoPlayer player;
     private DataSource.Factory dataSourceFactory;
     private boolean wasPlaying = false;
     private boolean isMute = false;
@@ -87,6 +86,8 @@ public class ViewImgurVideoFragment extends Fragment {
     @Inject
     @Named("default")
     SharedPreferences mSharedPreferences;
+    @Inject
+    SimpleCache mSimpleCache;
 
     public ViewImgurVideoFragment() {
         // Required empty public constructor
@@ -143,13 +144,13 @@ public class ViewImgurVideoFragment extends Fragment {
             }
         });
 
-        TrackSelection.Factory videoTrackSelectionFactory = new AdaptiveTrackSelection.Factory();
-        TrackSelector trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);
-        player = ExoPlayerFactory.newSimpleInstance(activity, trackSelector);
+        TrackSelector trackSelector = new DefaultTrackSelector(activity);
+        player = new ExoPlayer.Builder(activity).setTrackSelector(trackSelector).build();
         videoPlayerView.setPlayer(player);
-        dataSourceFactory = new DefaultDataSourceFactory(activity,
-                Util.getUserAgent(activity, "Infinity"));
-        player.prepare(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(Uri.parse(imgurMedia.getLink())));
+        dataSourceFactory = new CacheDataSource.Factory().setCache(mSimpleCache)
+                .setUpstreamDataSourceFactory(new DefaultHttpDataSource.Factory().setUserAgent(APIUtils.getRedgifsUserAgent(activity)));
+        player.prepare();
+        player.setMediaSource(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(MediaItem.fromUri(imgurMedia.getLink())));
 
         if (savedInstanceState != null) {
             playbackSpeed = savedInstanceState.getInt(PLAYBACK_SPEED_STATE);
@@ -278,12 +279,13 @@ public class ViewImgurVideoFragment extends Fragment {
             muteButton.setImageResource(R.drawable.ic_unmute_24dp);
         }
 
-        player.addListener(new Player.EventListener() {
+        player.addListener(new Player.Listener() {
             @Override
-            public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
+            public void onTracksChanged(@NonNull Tracks tracks) {
+                ImmutableList<Tracks.Group> trackGroups = tracks.getGroups();
                 if (!trackGroups.isEmpty()) {
-                    for (int i = 0; i < trackGroups.length; i++) {
-                        String mimeType = trackGroups.get(i).getFormat(0).sampleMimeType;
+                    for (int i = 0; i < trackGroups.size(); i++) {
+                        String mimeType = trackGroups.get(i).getTrackFormat(0).sampleMimeType;
                         if (mimeType != null && mimeType.contains("audio")) {
                             muteButton.setVisibility(View.VISIBLE);
                             muteButton.setOnClickListener(view -> {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewRPANBroadcastFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewRPANBroadcastFragment.java
index a053b68a..02884e88 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewRPANBroadcastFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewRPANBroadcastFragment.java
@@ -1,10 +1,10 @@
 package ml.docilealligator.infinityforreddit.fragments;
 
 import android.app.AlertDialog;
+import android.app.Dialog;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.content.res.Configuration;
-import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
 import android.view.LayoutInflater;
@@ -23,21 +23,20 @@ import androidx.recyclerview.widget.RecyclerView;
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.request.RequestOptions;
 import com.google.android.exoplayer2.ExoPlaybackException;
-import com.google.android.exoplayer2.ExoPlayerFactory;
+import com.google.android.exoplayer2.ExoPlayer;
+import com.google.android.exoplayer2.MediaItem;
 import com.google.android.exoplayer2.Player;
-import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.Tracks;
 import com.google.android.exoplayer2.source.BehindLiveWindowException;
-import com.google.android.exoplayer2.source.TrackGroupArray;
 import com.google.android.exoplayer2.source.hls.HlsMediaSource;
-import com.google.android.exoplayer2.trackselection.AdaptiveTrackSelection;
 import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
-import com.google.android.exoplayer2.trackselection.TrackSelection;
-import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import com.google.android.exoplayer2.ui.PlayerView;
 import com.google.android.exoplayer2.ui.TrackSelectionDialogBuilder;
 import com.google.android.exoplayer2.upstream.DataSource;
-import com.google.android.exoplayer2.upstream.DefaultHttpDataSourceFactory;
-import com.google.android.exoplayer2.util.Util;
+import com.google.android.exoplayer2.upstream.DefaultHttpDataSource;
+import com.google.android.exoplayer2.upstream.cache.CacheDataSource;
+import com.google.android.exoplayer2.upstream.cache.SimpleCache;
+import com.google.common.collect.ImmutableList;
 
 import org.json.JSONException;
 import org.json.JSONObject;
@@ -58,6 +57,7 @@ import ml.docilealligator.infinityforreddit.activities.RPANActivity;
 import ml.docilealligator.infinityforreddit.adapters.RPANCommentStreamRecyclerViewAdapter;
 import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
 import ml.docilealligator.infinityforreddit.customviews.LinearLayoutManagerBugFixed;
+import ml.docilealligator.infinityforreddit.utils.APIUtils;
 import ml.docilealligator.infinityforreddit.utils.JSONUtils;
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
 import okhttp3.OkHttpClient;
@@ -105,9 +105,11 @@ public class ViewRPANBroadcastFragment extends Fragment {
     @Inject
     @Named("rpan")
     OkHttpClient okHttpClient;
+    @Inject
+    SimpleCache mSimpleCache;
     private RPANActivity mActivity;
     private RPANBroadcast rpanBroadcast;
-    private SimpleExoPlayer player;
+    private ExoPlayer player;
     private DefaultTrackSelector trackSelector;
     private DataSource.Factory dataSourceFactory;
     private Handler handler;
@@ -175,9 +177,8 @@ public class ViewRPANBroadcastFragment extends Fragment {
             }
         });
 
-        TrackSelection.Factory videoTrackSelectionFactory = new AdaptiveTrackSelection.Factory();
-        trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);
-        player = ExoPlayerFactory.newSimpleInstance(mActivity, trackSelector);
+        trackSelector = new DefaultTrackSelector(mActivity);
+        player = new ExoPlayer.Builder(mActivity).setTrackSelector(trackSelector).build();
         playerView.setPlayer(player);
 
         wasPlaying = true;
@@ -202,9 +203,10 @@ public class ViewRPANBroadcastFragment extends Fragment {
             muteButton.setImageResource(R.drawable.ic_unmute_24dp);
         }
 
-        player.addListener(new Player.EventListener() {
+        player.addListener(new Player.Listener() {
             @Override
-            public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
+            public void onTracksChanged(@NonNull Tracks tracks) {
+                ImmutableList<Tracks.Group> trackGroups = tracks.getGroups();
                 if (!trackGroups.isEmpty()) {
                     if (isDataSavingMode) {
                         trackSelector.setParameters(
@@ -214,18 +216,19 @@ public class ViewRPANBroadcastFragment extends Fragment {
 
                     hdButton.setVisibility(View.VISIBLE);
                     hdButton.setOnClickListener(view -> {
-                        TrackSelectionDialogBuilder builder = new TrackSelectionDialogBuilder(mActivity,
-                                getString(R.string.select_video_quality), trackSelector, 0);
+                        TrackSelectionDialogBuilder builder = new TrackSelectionDialogBuilder(mActivity, getString(R.string.select_video_quality), player, 0);
                         builder.setShowDisableOption(true);
                         builder.setAllowAdaptiveSelections(false);
-                        AlertDialog alertDialog = builder.build();
-                        alertDialog.show();
-                        alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(mCustomThemeWrapper.getPrimaryTextColor());
-                        alertDialog.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(mCustomThemeWrapper.getPrimaryTextColor());
+                        Dialog dialog = builder.build();
+                        dialog.show();
+                        if (dialog instanceof AlertDialog) {
+                            ((AlertDialog) dialog).getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(mCustomThemeWrapper.getPrimaryTextColor());
+                            ((AlertDialog) dialog).getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(mCustomThemeWrapper.getPrimaryTextColor());
+                        }
                     });
 
-                    for (int i = 0; i < trackGroups.length; i++) {
-                        String mimeType = trackGroups.get(i).getFormat(0).sampleMimeType;
+                    for (int i = 0; i < trackGroups.size(); i++) {
+                        String mimeType = trackGroups.get(i).getTrackFormat(0).sampleMimeType;
                         if (mimeType != null && mimeType.contains("audio")) {
                             muteButton.setVisibility(View.VISIBLE);
                             muteButton.setOnClickListener(view -> {
@@ -350,9 +353,11 @@ public class ViewRPANBroadcastFragment extends Fragment {
     public void onResume() {
         super.onResume();
         if (dataSourceFactory == null) {
-            dataSourceFactory = new DefaultHttpDataSourceFactory(Util.getUserAgent(mActivity, "Infinity"));
+            dataSourceFactory = new CacheDataSource.Factory().setCache(mSimpleCache)
+                    .setUpstreamDataSourceFactory(new DefaultHttpDataSource.Factory().setUserAgent(APIUtils.getRedgifsUserAgent(mActivity)));
             // Prepare the player with the source.
-            player.prepare(new HlsMediaSource.Factory(dataSourceFactory).createMediaSource(Uri.parse(rpanBroadcast.rpanStream.hlsUrl)));
+            player.prepare();
+            player.setMediaSource(new HlsMediaSource.Factory(dataSourceFactory).createMediaSource(MediaItem.fromUri(rpanBroadcast.rpanStream.hlsUrl)));
             if (mSharedPreferences.getBoolean(SharedPreferencesUtils.LOOP_VIDEO, true)) {
                 player.setRepeatMode(Player.REPEAT_MODE_ALL);
             } else {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewRedditGalleryVideoFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewRedditGalleryVideoFragment.java
index fd27d4db..93e028c1 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewRedditGalleryVideoFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewRedditGalleryVideoFragment.java
@@ -7,7 +7,6 @@ import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.content.res.Configuration;
 import android.media.AudioManager;
-import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.view.LayoutInflater;
@@ -26,22 +25,21 @@ import androidx.annotation.NonNull;
 import androidx.core.content.ContextCompat;
 import androidx.fragment.app.Fragment;
 
-import com.google.android.exoplayer2.ExoPlayerFactory;
+import com.google.android.exoplayer2.ExoPlayer;
+import com.google.android.exoplayer2.MediaItem;
 import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.exoplayer2.Player;
-import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.Tracks;
 import com.google.android.exoplayer2.source.ProgressiveMediaSource;
-import com.google.android.exoplayer2.source.TrackGroupArray;
-import com.google.android.exoplayer2.trackselection.AdaptiveTrackSelection;
 import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
-import com.google.android.exoplayer2.trackselection.TrackSelection;
-import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import com.google.android.exoplayer2.trackselection.TrackSelector;
 import com.google.android.exoplayer2.ui.PlayerView;
 import com.google.android.exoplayer2.upstream.DataSource;
-import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
-import com.google.android.exoplayer2.util.Util;
+import com.google.android.exoplayer2.upstream.DefaultHttpDataSource;
+import com.google.android.exoplayer2.upstream.cache.CacheDataSource;
+import com.google.android.exoplayer2.upstream.cache.SimpleCache;
 import com.google.android.material.bottomappbar.BottomAppBar;
+import com.google.common.collect.ImmutableList;
 
 import javax.inject.Inject;
 import javax.inject.Named;
@@ -54,6 +52,7 @@ import ml.docilealligator.infinityforreddit.activities.ViewRedditGalleryActivity
 import ml.docilealligator.infinityforreddit.bottomsheetfragments.PlaybackSpeedBottomSheetFragment;
 import ml.docilealligator.infinityforreddit.post.Post;
 import ml.docilealligator.infinityforreddit.services.DownloadMediaService;
+import ml.docilealligator.infinityforreddit.utils.APIUtils;
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
 import ml.docilealligator.infinityforreddit.utils.Utils;
 
@@ -82,7 +81,7 @@ public class ViewRedditGalleryVideoFragment extends Fragment {
     private Post.Gallery galleryVideo;
     private String subredditName;
     private boolean isNsfw;
-    private SimpleExoPlayer player;
+    private ExoPlayer player;
     private DataSource.Factory dataSourceFactory;
     private boolean wasPlaying = false;
     private boolean isMute = false;
@@ -91,6 +90,8 @@ public class ViewRedditGalleryVideoFragment extends Fragment {
     @Inject
     @Named("default")
     SharedPreferences mSharedPreferences;
+    @Inject
+    SimpleCache mSimpleCache;
 
     public ViewRedditGalleryVideoFragment() {
         // Required empty public constructor
@@ -153,13 +154,13 @@ public class ViewRedditGalleryVideoFragment extends Fragment {
             }
         });
 
-        TrackSelection.Factory videoTrackSelectionFactory = new AdaptiveTrackSelection.Factory();
-        TrackSelector trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);
-        player = ExoPlayerFactory.newSimpleInstance(activity, trackSelector);
+        TrackSelector trackSelector = new DefaultTrackSelector(activity);
+        player = new ExoPlayer.Builder(activity).setTrackSelector(trackSelector).build();
         videoPlayerView.setPlayer(player);
-        dataSourceFactory = new DefaultDataSourceFactory(activity,
-                Util.getUserAgent(activity, "Infinity"));
-        player.prepare(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(Uri.parse(galleryVideo.url)));
+        dataSourceFactory = new CacheDataSource.Factory().setCache(mSimpleCache)
+                .setUpstreamDataSourceFactory(new DefaultHttpDataSource.Factory().setUserAgent(APIUtils.getRedgifsUserAgent(activity)));
+        player.prepare();
+        player.setMediaSource(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(MediaItem.fromUri(galleryVideo.url)));
 
         if (savedInstanceState != null) {
             playbackSpeed = savedInstanceState.getInt(PLAYBACK_SPEED_STATE);
@@ -290,12 +291,13 @@ public class ViewRedditGalleryVideoFragment extends Fragment {
             muteButton.setImageResource(R.drawable.ic_unmute_24dp);
         }
 
-        player.addListener(new Player.EventListener() {
+        player.addListener(new Player.Listener() {
             @Override
-            public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
+            public void onTracksChanged(@NonNull Tracks tracks) {
+                ImmutableList<Tracks.Group> trackGroups = tracks.getGroups();
                 if (!trackGroups.isEmpty()) {
-                    for (int i = 0; i < trackGroups.length; i++) {
-                        String mimeType = trackGroups.get(i).getFormat(0).sampleMimeType;
+                    for (int i = 0; i < trackGroups.size(); i++) {
+                        String mimeType = trackGroups.get(i).getTrackFormat(0).sampleMimeType;
                         if (mimeType != null && mimeType.contains("audio")) {
                             muteButton.setVisibility(View.VISIBLE);
                             muteButton.setOnClickListener(view -> {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/Config.java b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/Config.java
index 7fe095d4..8513c4bf 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/Config.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/Config.java
@@ -29,15 +29,11 @@ import com.google.android.exoplayer2.DefaultLoadControl;
 import com.google.android.exoplayer2.DefaultRenderersFactory.ExtensionRendererMode;
 import com.google.android.exoplayer2.LoadControl;
 import com.google.android.exoplayer2.SimpleExoPlayer;
-import com.google.android.exoplayer2.drm.DrmSessionManager;
-import com.google.android.exoplayer2.drm.FrameworkMediaCrypto;
 import com.google.android.exoplayer2.source.MediaSource;
 import com.google.android.exoplayer2.upstream.DataSource;
 import com.google.android.exoplayer2.upstream.DefaultBandwidthMeter;
 import com.google.android.exoplayer2.upstream.cache.Cache;
 
-import ml.docilealligator.infinityforreddit.videoautoplay.annotations.Beta;
-
 /**
  * Necessary configuration for {@link ExoCreator} to produces {@link SimpleExoPlayer} and
  * {@link MediaSource}. Instance of this class must be construct using {@link Builder}.
@@ -61,7 +57,6 @@ public final class Config {
   @NonNull final MediaSourceBuilder mediaSourceBuilder;
 
   // Nullable options
-  @Nullable final DrmSessionManager<FrameworkMediaCrypto> drmSessionManager;
   @Nullable final Cache cache; // null by default
   // If null, ExoCreator must come up with a default one.
   // This is to help customizing the Data source, for example using OkHttp extension.
@@ -69,17 +64,16 @@ public final class Config {
 
   @SuppressWarnings("WeakerAccess") //
   Config(@Nullable Context context, int extensionMode, @NonNull BaseMeter meter,
-      @NonNull LoadControl loadControl,
-      @Nullable DataSource.Factory dataSourceFactory,
-      @NonNull MediaSourceBuilder mediaSourceBuilder,
-      @Nullable DrmSessionManager<FrameworkMediaCrypto> drmSessionManager, @Nullable Cache cache) {
+         @NonNull LoadControl loadControl,
+         @Nullable DataSource.Factory dataSourceFactory,
+         @NonNull MediaSourceBuilder mediaSourceBuilder,
+         @Nullable Cache cache) {
     this.context = context != null ? context.getApplicationContext() : null;
     this.extensionMode = extensionMode;
     this.meter = meter;
     this.loadControl = loadControl;
     this.dataSourceFactory = dataSourceFactory;
     this.mediaSourceBuilder = mediaSourceBuilder;
-    this.drmSessionManager = drmSessionManager;
     this.cache = cache;
   }
 
@@ -93,7 +87,6 @@ public final class Config {
     if (!meter.equals(config.meter)) return false;
     if (!loadControl.equals(config.loadControl)) return false;
     if (!mediaSourceBuilder.equals(config.mediaSourceBuilder)) return false;
-    if (!ObjectsCompat.equals(drmSessionManager, config.drmSessionManager)) return false;
     if (!ObjectsCompat.equals(cache, config.cache)) return false;
     return ObjectsCompat.equals(dataSourceFactory, config.dataSourceFactory);
   }
@@ -103,7 +96,6 @@ public final class Config {
     result = 31 * result + meter.hashCode();
     result = 31 * result + loadControl.hashCode();
     result = 31 * result + mediaSourceBuilder.hashCode();
-    result = 31 * result + (drmSessionManager != null ? drmSessionManager.hashCode() : 0);
     result = 31 * result + (cache != null ? cache.hashCode() : 0);
     result = 31 * result + (dataSourceFactory != null ? dataSourceFactory.hashCode() : 0);
     return result;
@@ -111,7 +103,6 @@ public final class Config {
 
   @SuppressWarnings("unused") public Builder newBuilder() {
     return new Builder(context).setCache(this.cache)
-        .setDrmSessionManager(this.drmSessionManager)
         .setExtensionMode(this.extensionMode)
         .setLoadControl(this.loadControl)
         .setMediaSourceBuilder(this.mediaSourceBuilder)
@@ -145,7 +136,6 @@ public final class Config {
     private LoadControl loadControl = new DefaultLoadControl();
     private DataSource.Factory dataSourceFactory = null;
     private MediaSourceBuilder mediaSourceBuilder = MediaSourceBuilder.DEFAULT;
-    private DrmSessionManager<FrameworkMediaCrypto> drmSessionManager = null;
     private Cache cache = null;
 
     public Builder setExtensionMode(@ExtensionRendererMode int extensionMode) {
@@ -175,13 +165,6 @@ public final class Config {
       return this;
     }
 
-    @Beta //
-    public Builder setDrmSessionManager(
-        @Nullable DrmSessionManager<FrameworkMediaCrypto> drmSessionManager) {
-      this.drmSessionManager = drmSessionManager;
-      return this;
-    }
-
     public Builder setCache(@Nullable Cache cache) {
       this.cache = cache;
       return this;
@@ -189,7 +172,7 @@ public final class Config {
 
     public Config build() {
       return new Config(context, extensionMode, meter, loadControl, dataSourceFactory,
-          mediaSourceBuilder, drmSessionManager, cache);
+          mediaSourceBuilder, cache);
     }
   }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/DefaultExoCreator.java b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/DefaultExoCreator.java
index af3bbd84..4c82c34b 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/DefaultExoCreator.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/DefaultExoCreator.java
@@ -27,22 +27,26 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.google.android.exoplayer2.DefaultRenderersFactory;
+import com.google.android.exoplayer2.ExoPlayer;
 import com.google.android.exoplayer2.LoadControl;
 import com.google.android.exoplayer2.RenderersFactory;
-import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.source.LoadEventInfo;
+import com.google.android.exoplayer2.source.MediaLoadData;
 import com.google.android.exoplayer2.source.MediaSource;
 import com.google.android.exoplayer2.source.MediaSourceEventListener;
 import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
 import com.google.android.exoplayer2.trackselection.TrackSelector;
 import com.google.android.exoplayer2.upstream.DataSource;
 import com.google.android.exoplayer2.upstream.DefaultBandwidthMeter;
-import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
-import com.google.android.exoplayer2.upstream.DefaultHttpDataSourceFactory;
-import com.google.android.exoplayer2.upstream.cache.CacheDataSourceFactory;
+import com.google.android.exoplayer2.upstream.DefaultDataSource;
+import com.google.android.exoplayer2.upstream.DefaultHttpDataSource;
+import com.google.android.exoplayer2.upstream.cache.CacheDataSource;
 import com.google.android.exoplayer2.util.Util;
 
 import java.io.IOException;
 
+import ml.docilealligator.infinityforreddit.utils.APIUtils;
+
 /**
  * Usage: use this as-it or inheritance.
  *
@@ -50,144 +54,139 @@ import java.io.IOException;
  * @since 3.4.0
  */
 
-@SuppressWarnings({ "unused", "WeakerAccess" }) //
+@SuppressWarnings({"unused", "WeakerAccess"}) //
 public class DefaultExoCreator implements ExoCreator, MediaSourceEventListener {
 
-  final ToroExo toro;  // per application
-  final Config config;
-  private final TrackSelector trackSelector;  // 'maybe' stateless
-  private final LoadControl loadControl;  // stateless
-  private final MediaSourceBuilder mediaSourceBuilder;  // stateless
-  private final RenderersFactory renderersFactory;  // stateless
-  private final DataSource.Factory mediaDataSourceFactory;  // stateless
-  private final DataSource.Factory manifestDataSourceFactory; // stateless
-
-  public DefaultExoCreator(@NonNull ToroExo toro, @NonNull Config config) {
-    this.toro = checkNotNull(toro);
-    this.config = checkNotNull(config);
-    trackSelector = new DefaultTrackSelector();
-    loadControl = config.loadControl;
-    mediaSourceBuilder = config.mediaSourceBuilder;
-
-    DefaultRenderersFactory tempFactory = new DefaultRenderersFactory(this.toro.context);
-    tempFactory.setExtensionRendererMode(config.extensionMode);
-    renderersFactory = tempFactory;
-
-    DataSource.Factory baseFactory = config.dataSourceFactory;
-    if (baseFactory == null) {
-      baseFactory = new DefaultHttpDataSourceFactory(toro.appName, config.meter);
+    final ToroExo toro;  // per application
+    final Config config;
+    private final TrackSelector trackSelector;  // 'maybe' stateless
+    private final LoadControl loadControl;  // stateless
+    private final MediaSourceBuilder mediaSourceBuilder;  // stateless
+    private final RenderersFactory renderersFactory;  // stateless
+    private final DataSource.Factory mediaDataSourceFactory;  // stateless
+    private final DataSource.Factory manifestDataSourceFactory; // stateless
+
+    public DefaultExoCreator(@NonNull ToroExo toro, @NonNull Config config) {
+        this.toro = checkNotNull(toro);
+        this.config = checkNotNull(config);
+        trackSelector = new DefaultTrackSelector();
+        loadControl = config.loadControl;
+        mediaSourceBuilder = config.mediaSourceBuilder;
+
+        DefaultRenderersFactory tempFactory = new DefaultRenderersFactory(this.toro.context);
+        tempFactory.setExtensionRendererMode(config.extensionMode);
+        renderersFactory = tempFactory;
+
+        DataSource.Factory baseFactory = config.dataSourceFactory;
+        if (baseFactory == null) {
+            baseFactory = new DefaultHttpDataSource.Factory().setUserAgent(APIUtils.getRedgifsUserAgent(getContext()));
+        }
+        DataSource.Factory factory = new DefaultDataSource.Factory(this.toro.context, baseFactory);
+        if (config.cache != null)
+            factory = new CacheDataSource.Factory().setCache(config.cache).setUpstreamDataSourceFactory(baseFactory);
+        mediaDataSourceFactory = factory;
+        manifestDataSourceFactory = new DefaultDataSource.Factory(this.toro.context);
+    }
+
+    public DefaultExoCreator(Context context, Config config) {
+        this(with(context), config);
+    }
+
+    @SuppressWarnings("SimplifiableIfStatement")
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        DefaultExoCreator that = (DefaultExoCreator) o;
+
+        if (!toro.equals(that.toro)) return false;
+        if (!trackSelector.equals(that.trackSelector)) return false;
+        if (!loadControl.equals(that.loadControl)) return false;
+        if (!mediaSourceBuilder.equals(that.mediaSourceBuilder)) return false;
+        if (!renderersFactory.equals(that.renderersFactory)) return false;
+        if (!mediaDataSourceFactory.equals(that.mediaDataSourceFactory)) return false;
+        return manifestDataSourceFactory.equals(that.manifestDataSourceFactory);
+    }
+
+    @Override
+    public int hashCode() {
+        int result = toro.hashCode();
+        result = 31 * result + trackSelector.hashCode();
+        result = 31 * result + loadControl.hashCode();
+        result = 31 * result + mediaSourceBuilder.hashCode();
+        result = 31 * result + renderersFactory.hashCode();
+        result = 31 * result + mediaDataSourceFactory.hashCode();
+        result = 31 * result + manifestDataSourceFactory.hashCode();
+        return result;
+    }
+
+    final TrackSelector getTrackSelector() {
+        return trackSelector;
+    }
+
+    @Nullable
+    @Override
+    public Context getContext() {
+        return toro.context;
+    }
+
+    @NonNull
+    @Override
+    public ExoPlayer createPlayer() {
+        return new ToroExoPlayer(toro.context, renderersFactory, trackSelector, loadControl,
+                new DefaultBandwidthMeter.Builder(toro.context).build(), Util.getCurrentOrMainLooper()).getPlayer();
+    }
+
+    @NonNull
+    @Override
+    public MediaSource createMediaSource(@NonNull Uri uri, String fileExt) {
+        return mediaSourceBuilder.buildMediaSource(this.toro.context, uri, fileExt, new Handler(),
+                manifestDataSourceFactory, mediaDataSourceFactory, this);
+    }
+
+    @NonNull
+    @Override //
+    public Playable createPlayable(@NonNull Uri uri, String fileExt) {
+        return new PlayableImpl(this, uri, fileExt);
+    }
+
+    /// MediaSourceEventListener
+
+    @Override
+    public void onLoadStarted(int windowIndex, @Nullable MediaSource.MediaPeriodId mediaPeriodId,
+                              LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) {
+        // no-ops
+    }
+
+    @Override
+    public void onLoadCompleted(int windowIndex, @Nullable MediaSource.MediaPeriodId mediaPeriodId,
+                                LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) {
+        // no-ops
+    }
+
+    @Override
+    public void onLoadCanceled(int windowIndex, @Nullable MediaSource.MediaPeriodId mediaPeriodId,
+                               LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) {
+        // no-ops
+    }
+
+    @Override
+    public void onLoadError(int windowIndex, @Nullable MediaSource.MediaPeriodId mediaPeriodId,
+                            LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData, IOException error,
+                            boolean wasCanceled) {
+        // no-ops
+    }
+
+    @Override
+    public void onUpstreamDiscarded(int windowIndex, MediaSource.MediaPeriodId mediaPeriodId,
+                                    MediaLoadData mediaLoadData) {
+        // no-ops
+    }
+
+    @Override
+    public void onDownstreamFormatChanged(int windowIndex,
+                                          @Nullable MediaSource.MediaPeriodId mediaPeriodId, MediaLoadData mediaLoadData) {
+        // no-ops
     }
-    DataSource.Factory factory = new DefaultDataSourceFactory(this.toro.context,  //
-        config.meter, baseFactory);
-    if (config.cache != null) factory = new CacheDataSourceFactory(config.cache, factory);
-    mediaDataSourceFactory = factory;
-    manifestDataSourceFactory = new DefaultDataSourceFactory(this.toro.context, this.toro.appName);
-  }
-
-  public DefaultExoCreator(Context context, Config config) {
-    this(with(context), config);
-  }
-
-  @SuppressWarnings("SimplifiableIfStatement")
-  @Override public boolean equals(Object o) {
-    if (this == o) return true;
-    if (o == null || getClass() != o.getClass()) return false;
-
-    DefaultExoCreator that = (DefaultExoCreator) o;
-
-    if (!toro.equals(that.toro)) return false;
-    if (!trackSelector.equals(that.trackSelector)) return false;
-    if (!loadControl.equals(that.loadControl)) return false;
-    if (!mediaSourceBuilder.equals(that.mediaSourceBuilder)) return false;
-    if (!renderersFactory.equals(that.renderersFactory)) return false;
-    if (!mediaDataSourceFactory.equals(that.mediaDataSourceFactory)) return false;
-    return manifestDataSourceFactory.equals(that.manifestDataSourceFactory);
-  }
-
-  @Override public int hashCode() {
-    int result = toro.hashCode();
-    result = 31 * result + trackSelector.hashCode();
-    result = 31 * result + loadControl.hashCode();
-    result = 31 * result + mediaSourceBuilder.hashCode();
-    result = 31 * result + renderersFactory.hashCode();
-    result = 31 * result + mediaDataSourceFactory.hashCode();
-    result = 31 * result + manifestDataSourceFactory.hashCode();
-    return result;
-  }
-
-  final TrackSelector getTrackSelector() {
-    return trackSelector;
-  }
-
-  @Nullable @Override public Context getContext() {
-    return toro.context;
-  }
-
-  @NonNull @Override public SimpleExoPlayer createPlayer() {
-    return new ToroExoPlayer(toro.context, renderersFactory, trackSelector, loadControl,
-        new DefaultBandwidthMeter.Builder(toro.context).build(), config.drmSessionManager,
-        Util.getLooper());
-  }
-
-  @NonNull @Override public MediaSource createMediaSource(@NonNull Uri uri, String fileExt) {
-    return mediaSourceBuilder.buildMediaSource(this.toro.context, uri, fileExt, new Handler(),
-        manifestDataSourceFactory, mediaDataSourceFactory, this);
-  }
-
-  @NonNull @Override //
-  public Playable createPlayable(@NonNull Uri uri, String fileExt) {
-    return new PlayableImpl(this, uri, fileExt);
-  }
-
-  /// MediaSourceEventListener
-
-  @Override
-  public void onLoadStarted(int windowIndex, @Nullable MediaSource.MediaPeriodId mediaPeriodId,
-      LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) {
-    // no-ops
-  }
-
-  @Override
-  public void onLoadCompleted(int windowIndex, @Nullable MediaSource.MediaPeriodId mediaPeriodId,
-      LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) {
-    // no-ops
-  }
-
-  @Override
-  public void onLoadCanceled(int windowIndex, @Nullable MediaSource.MediaPeriodId mediaPeriodId,
-      LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData) {
-    // no-ops
-  }
-
-  @Override
-  public void onLoadError(int windowIndex, @Nullable MediaSource.MediaPeriodId mediaPeriodId,
-      LoadEventInfo loadEventInfo, MediaLoadData mediaLoadData, IOException error,
-      boolean wasCanceled) {
-    // no-ops
-  }
-
-  @Override public void onReadingStarted(int windowIndex, MediaSource.MediaPeriodId mediaPeriodId) {
-    // no-ops
-  }
-
-  @Override
-  public void onUpstreamDiscarded(int windowIndex, MediaSource.MediaPeriodId mediaPeriodId,
-      MediaLoadData mediaLoadData) {
-    // no-ops
-  }
-
-  @Override public void onDownstreamFormatChanged(int windowIndex,
-      @Nullable MediaSource.MediaPeriodId mediaPeriodId, MediaLoadData mediaLoadData) {
-    // no-ops
-  }
-
-  @Override
-  public void onMediaPeriodCreated(int windowIndex, MediaSource.MediaPeriodId mediaPeriodId) {
-    // no-ops
-  }
-
-  @Override
-  public void onMediaPeriodReleased(int windowIndex, MediaSource.MediaPeriodId mediaPeriodId) {
-    // no-ops
-  }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ExoCreator.java b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ExoCreator.java
index c4319493..d639c9d3 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ExoCreator.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ExoCreator.java
@@ -22,6 +22,7 @@ import android.net.Uri;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
+import com.google.android.exoplayer2.ExoPlayer;
 import com.google.android.exoplayer2.SimpleExoPlayer;
 import com.google.android.exoplayer2.source.MediaSource;
 
@@ -52,7 +53,8 @@ public interface ExoCreator {
    *
    * @return a new {@link SimpleExoPlayer} instance.
    */
-  @NonNull SimpleExoPlayer createPlayer();
+  @NonNull
+  ExoPlayer createPlayer();
 
   /**
    * Create a {@link MediaSource} from media {@link Uri}.
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ExoPlayable.java b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ExoPlayable.java
index a159ea17..9690d014 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ExoPlayable.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ExoPlayable.java
@@ -17,7 +17,6 @@
 package ml.docilealligator.infinityforreddit.videoautoplay;
 
 import static com.google.android.exoplayer2.trackselection.MappingTrackSelector.MappedTrackInfo.RENDERER_SUPPORT_UNSUPPORTED_TRACKS;
-
 import static ml.docilealligator.infinityforreddit.videoautoplay.ToroExo.toro;
 
 import android.net.Uri;
@@ -28,16 +27,16 @@ import androidx.annotation.Nullable;
 
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.ExoPlaybackException;
+import com.google.android.exoplayer2.PlaybackException;
+import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.SimpleExoPlayer;
-import com.google.android.exoplayer2.mediacodec.MediaCodecRenderer;
-import com.google.android.exoplayer2.mediacodec.MediaCodecUtil;
+import com.google.android.exoplayer2.Tracks;
 import com.google.android.exoplayer2.source.BehindLiveWindowException;
-import com.google.android.exoplayer2.source.TrackGroupArray;
 import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
 import com.google.android.exoplayer2.trackselection.MappingTrackSelector.MappedTrackInfo;
-import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import com.google.android.exoplayer2.trackselection.TrackSelector;
 import com.google.android.exoplayer2.ui.PlayerView;
+import com.google.common.collect.ImmutableList;
 
 import ml.docilealligator.infinityforreddit.R;
 
@@ -52,154 +51,132 @@ import ml.docilealligator.infinityforreddit.R;
 @SuppressWarnings("WeakerAccess")
 public class ExoPlayable extends PlayableImpl {
 
-  @SuppressWarnings("unused") private static final String TAG = "ToroExo:Playable";
-
-  private EventListener listener;
-
-  // Adapt from ExoPlayer demo.
-  protected boolean inErrorState = false;
-  protected TrackGroupArray lastSeenTrackGroupArray;
-
-  /**
-   * Construct an instance of {@link ExoPlayable} from an {@link ExoCreator} and {@link Uri}. The
-   * {@link ExoCreator} is used to request {@link SimpleExoPlayer} instance, while {@link Uri}
-   * defines the media to play.
-   *
-   * @param creator the {@link ExoCreator} instance.
-   * @param uri the {@link Uri} of the media.
-   * @param fileExt the custom extension of the media Uri.
-   */
-  public ExoPlayable(ExoCreator creator, Uri uri, String fileExt) {
-    super(creator, uri, fileExt);
-  }
-
-  @Override public void prepare(boolean prepareSource) {
-    if (listener == null) {
-      listener = new Listener();
-      super.addEventListener(listener);
-    }
-    super.prepare(prepareSource);
-    this.lastSeenTrackGroupArray = null;
-    this.inErrorState = false;
-  }
-
-  @Override public void setPlayerView(@Nullable PlayerView playerView) {
-    // This will also clear these flags
-    if (playerView != this.playerView) {
-      this.lastSeenTrackGroupArray = null;
-      this.inErrorState = false;
+    @SuppressWarnings("unused")
+    private static final String TAG = "ToroExo:Playable";
+
+    private EventListener listener;
+
+    // Adapt from ExoPlayer demo.
+    protected boolean inErrorState = false;
+    protected ImmutableList<Tracks.Group> lastSeenTrackGroupArray;
+
+    /**
+     * Construct an instance of {@link ExoPlayable} from an {@link ExoCreator} and {@link Uri}. The
+     * {@link ExoCreator} is used to request {@link SimpleExoPlayer} instance, while {@link Uri}
+     * defines the media to play.
+     *
+     * @param creator the {@link ExoCreator} instance.
+     * @param uri     the {@link Uri} of the media.
+     * @param fileExt the custom extension of the media Uri.
+     */
+    public ExoPlayable(ExoCreator creator, Uri uri, String fileExt) {
+        super(creator, uri, fileExt);
     }
-    super.setPlayerView(playerView);
-  }
-
-  @Override public void reset() {
-    super.reset();
-    this.lastSeenTrackGroupArray = null;
-    this.inErrorState = false;
-  }
-
-  @Override public void release() {
-    if (listener != null) {
-      super.removeEventListener(listener);
-      listener = null;
+
+    @Override
+    public void prepare(boolean prepareSource) {
+        if (listener == null) {
+            listener = new Listener();
+            super.addEventListener(listener);
+        }
+        super.prepare(prepareSource);
+        this.lastSeenTrackGroupArray = null;
+        this.inErrorState = false;
     }
-    super.release();
-    this.lastSeenTrackGroupArray = null;
-    this.inErrorState = false;
-  }
-
-  @SuppressWarnings({ "unused" }) //
-  protected void onErrorMessage(@NonNull String message) {
-    // Sub class can have custom reaction about the error here, including not to show this toast
-    // (by not calling super.onErrorMessage(message)).
-    if (this.errorListeners.size() > 0) {
-      this.errorListeners.onError(new RuntimeException(message));
-    } else if (playerView != null) {
-      Toast.makeText(playerView.getContext(), message, Toast.LENGTH_SHORT).show();
+
+    @Override
+    public void setPlayerView(@Nullable PlayerView playerView) {
+        // This will also clear these flags
+        if (playerView != this.playerView) {
+            this.lastSeenTrackGroupArray = null;
+            this.inErrorState = false;
+        }
+        super.setPlayerView(playerView);
     }
-  }
 
-  class Listener extends DefaultEventListener {
+    @Override
+    public void reset() {
+        super.reset();
+        this.lastSeenTrackGroupArray = null;
+        this.inErrorState = false;
+    }
 
     @Override
-    public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
-      super.onTracksChanged(trackGroups, trackSelections);
-      if (trackGroups == lastSeenTrackGroupArray) return;
-      lastSeenTrackGroupArray = trackGroups;
-      if (!(creator instanceof DefaultExoCreator)) return;
-      TrackSelector selector = ((DefaultExoCreator) creator).getTrackSelector();
-      if (selector instanceof DefaultTrackSelector) {
-        MappedTrackInfo trackInfo = ((DefaultTrackSelector) selector).getCurrentMappedTrackInfo();
-        if (trackInfo != null) {
-          if (trackInfo.getTypeSupport(C.TRACK_TYPE_VIDEO) == RENDERER_SUPPORT_UNSUPPORTED_TRACKS) {
-            onErrorMessage(toro.getString(R.string.error_unsupported_video));
-          }
-
-          if (trackInfo.getTypeSupport(C.TRACK_TYPE_AUDIO) == RENDERER_SUPPORT_UNSUPPORTED_TRACKS) {
-            onErrorMessage(toro.getString(R.string.error_unsupported_audio));
-          }
+    public void release() {
+        if (listener != null) {
+            super.removeEventListener(listener);
+            listener = null;
         }
-      }
+        super.release();
+        this.lastSeenTrackGroupArray = null;
+        this.inErrorState = false;
     }
 
-    @Override public void onPlayerError(ExoPlaybackException error) {
-      /// Adapt from ExoPlayer Demo
-      String errorString = null;
-      if (error.type == ExoPlaybackException.TYPE_RENDERER) {
-        Exception cause = error.getRendererException();
-        if (cause instanceof MediaCodecRenderer.DecoderInitializationException) {
-          // Special case for decoder initialization failures.
-          MediaCodecRenderer.DecoderInitializationException decoderInitializationException =
-              (MediaCodecRenderer.DecoderInitializationException) cause;
-          if (decoderInitializationException.decoderName == null) {
-            if (decoderInitializationException.getCause() instanceof MediaCodecUtil.DecoderQueryException) {
-              errorString = toro.getString(R.string.error_querying_decoders);
-            } else if (decoderInitializationException.secureDecoderRequired) {
-              errorString = toro.getString(R.string.error_no_secure_decoder,
-                  decoderInitializationException.mimeType);
-            } else {
-              errorString = toro.getString(R.string.error_no_decoder,
-                  decoderInitializationException.mimeType);
+    @SuppressWarnings({"unused"}) //
+    protected void onErrorMessage(@NonNull String message) {
+        // Sub class can have custom reaction about the error here, including not to show this toast
+        // (by not calling super.onErrorMessage(message)).
+        if (this.errorListeners.size() > 0) {
+            this.errorListeners.onError(new RuntimeException(message));
+        } else if (playerView != null) {
+            Toast.makeText(playerView.getContext(), message, Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    class Listener extends DefaultEventListener {
+        @Override
+        public void onTracksChanged(@NonNull Tracks tracks) {
+            ImmutableList<Tracks.Group> trackGroups = tracks.getGroups();
+            if (trackGroups == lastSeenTrackGroupArray) return;
+            lastSeenTrackGroupArray = trackGroups;
+            if (!(creator instanceof DefaultExoCreator)) return;
+            TrackSelector selector = ((DefaultExoCreator) creator).getTrackSelector();
+            if (selector instanceof DefaultTrackSelector) {
+                MappedTrackInfo trackInfo = ((DefaultTrackSelector) selector).getCurrentMappedTrackInfo();
+                if (trackInfo != null) {
+                    if (trackInfo.getTypeSupport(C.TRACK_TYPE_VIDEO) == RENDERER_SUPPORT_UNSUPPORTED_TRACKS) {
+                        onErrorMessage(toro.getString(R.string.error_unsupported_video));
+                    }
+
+                    if (trackInfo.getTypeSupport(C.TRACK_TYPE_AUDIO) == RENDERER_SUPPORT_UNSUPPORTED_TRACKS) {
+                        onErrorMessage(toro.getString(R.string.error_unsupported_audio));
+                    }
+                }
             }
-          } else {
-            errorString = toro.getString(R.string.error_instantiating_decoder,
-                decoderInitializationException.decoderName);
-          }
         }
-      }
 
-      if (errorString != null) onErrorMessage(errorString);
+        @Override
+        public void onPlayerError(@NonNull PlaybackException error) {
+            inErrorState = true;
+            if (isBehindLiveWindow(error)) {
+                ExoPlayable.super.reset();
+            } else {
+                ExoPlayable.super.updatePlaybackInfo();
+            }
 
-      inErrorState = true;
-      if (isBehindLiveWindow(error)) {
-        ExoPlayable.super.reset();
-      } else {
-        ExoPlayable.super.updatePlaybackInfo();
-      }
+            super.onPlayerError(error);
+        }
 
-      super.onPlayerError(error);
+        @Override
+        public void onPositionDiscontinuity(@NonNull Player.PositionInfo oldPosition, @NonNull Player.PositionInfo newPosition, int reason) {
+            if (inErrorState) {
+                // Adapt from ExoPlayer demo.
+                // "This will only occur if the user has performed a seek whilst in the error state. Update
+                // the resume position so that if the user then retries, playback will resume from the
+                // position to which they seek." - ExoPlayer
+                ExoPlayable.super.updatePlaybackInfo();
+            }
+            super.onPositionDiscontinuity(oldPosition, newPosition, reason);
+        }
     }
 
-    @Override public void onPositionDiscontinuity(int reason) {
-      if (inErrorState) {
-        // Adapt from ExoPlayer demo.
-        // "This will only occur if the user has performed a seek whilst in the error state. Update
-        // the resume position so that if the user then retries, playback will resume from the
-        // position to which they seek." - ExoPlayer
-        ExoPlayable.super.updatePlaybackInfo();
-      }
-
-      super.onPositionDiscontinuity(reason);
-    }
-  }
-
-  static boolean isBehindLiveWindow(ExoPlaybackException error) {
-    if (error.type != ExoPlaybackException.TYPE_SOURCE) return false;
-    Throwable cause = error.getSourceException();
-    while (cause != null) {
-      if (cause instanceof BehindLiveWindowException) return true;
-      cause = cause.getCause();
+    static boolean isBehindLiveWindow(PlaybackException error) {
+        if (error instanceof ExoPlaybackException && ((ExoPlaybackException) error).type != ExoPlaybackException.TYPE_SOURCE) return false;
+        Throwable cause = error.getCause();
+        while (cause != null) {
+            if (cause instanceof BehindLiveWindowException) return true;
+            cause = cause.getCause();
+        }
+        return false;
     }
-    return false;
-  }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ExoPlayerDispatcher.java b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ExoPlayerDispatcher.java
deleted file mode 100644
index 031c1f3a..00000000
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ExoPlayerDispatcher.java
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2018 Nam Nguyen, nam@ene.im
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ml.docilealligator.infinityforreddit.videoautoplay;
-
-import com.google.android.exoplayer2.DefaultControlDispatcher;
-import com.google.android.exoplayer2.Player;
-import com.google.android.exoplayer2.ui.PlayerView;
-
-import ml.docilealligator.infinityforreddit.videoautoplay.annotations.Beta;
-import ml.docilealligator.infinityforreddit.videoautoplay.widget.PressablePlayerSelector;
-
-/**
- * @author eneim (2018/08/18).
- * @since 3.6.0.2802
- *
- * Work with {@link PressablePlayerSelector} and {@link PlayerView} to handle user's custom playback
- * interaction. A common use-case is when user clicks the Play button to manually start a playback.
- * We should respect this by putting the {@link ToroPlayer}'s priority to highest, and request a
- * refresh for all {@link ToroPlayer}.
- *
- * The same behaviour should be handled for the case user clicks the Pause button.
- *
- * All behaviour should be cleared once user scroll the selection out of playable region. This is
- * already handled by {@link PressablePlayerSelector}.
- */
-@Beta //
-public class ExoPlayerDispatcher extends DefaultControlDispatcher {
-
-  private final PressablePlayerSelector playerSelector;
-  private final ToroPlayer toroPlayer;
-
-  public ExoPlayerDispatcher(PressablePlayerSelector playerSelector, ToroPlayer toroPlayer) {
-    this.playerSelector = playerSelector;
-    this.toroPlayer = toroPlayer;
-  }
-
-  @Override public boolean dispatchSetPlayWhenReady(Player player, boolean playWhenReady) {
-    if (playWhenReady) {
-      // Container will handle the call to play.
-      return playerSelector.toPlay(toroPlayer.getPlayerOrder());
-    } else {
-      player.setPlayWhenReady(false);
-      playerSelector.toPause(toroPlayer.getPlayerOrder());
-      return true;
-    }
-  }
-}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/MediaSourceBuilder.java b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/MediaSourceBuilder.java
index 885319d0..d54798cf 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/MediaSourceBuilder.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/MediaSourceBuilder.java
@@ -28,6 +28,7 @@ import androidx.annotation.Nullable;
 
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.C.ContentType;
+import com.google.android.exoplayer2.MediaItem;
 import com.google.android.exoplayer2.source.LoopingMediaSource;
 import com.google.android.exoplayer2.source.MediaSource;
 import com.google.android.exoplayer2.source.MediaSourceEventListener;
@@ -46,59 +47,62 @@ import com.google.android.exoplayer2.upstream.DataSource;
 
 public interface MediaSourceBuilder {
 
-  @NonNull MediaSource buildMediaSource(@NonNull Context context, @NonNull Uri uri,
-      @Nullable String fileExt, @Nullable Handler handler,
-      @NonNull DataSource.Factory manifestDataSourceFactory,
-      @NonNull DataSource.Factory mediaDataSourceFactory,
-      @Nullable MediaSourceEventListener listener);
+    @NonNull
+    MediaSource buildMediaSource(@NonNull Context context, @NonNull Uri uri,
+                                 @Nullable String fileExt, @Nullable Handler handler,
+                                 @NonNull DataSource.Factory manifestDataSourceFactory,
+                                 @NonNull DataSource.Factory mediaDataSourceFactory,
+                                 @Nullable MediaSourceEventListener listener);
 
-  MediaSourceBuilder DEFAULT = new MediaSourceBuilder() {
-    @NonNull @Override
-    public MediaSource buildMediaSource(@NonNull Context context, @NonNull Uri uri,
-        @Nullable String ext, @Nullable Handler handler,
-        @NonNull DataSource.Factory manifestDataSourceFactory,
-        @NonNull DataSource.Factory mediaDataSourceFactory, MediaSourceEventListener listener) {
-      @ContentType int type = isEmpty(ext) ? inferContentType(uri) : inferContentType("." + ext);
-      MediaSource result;
-      switch (type) {
-        case C.TYPE_SS:
-          result = new SsMediaSource.Factory(
-              new DefaultSsChunkSource.Factory(mediaDataSourceFactory), manifestDataSourceFactory)
-              .createMediaSource(uri);
-          break;
-        case C.TYPE_DASH:
-          result = new DashMediaSource.Factory(
-              new DefaultDashChunkSource.Factory(mediaDataSourceFactory), manifestDataSourceFactory)
-              .createMediaSource(uri);
-          break;
-        case C.TYPE_HLS:
-          result = new HlsMediaSource.Factory(mediaDataSourceFactory) //
-              .createMediaSource(uri);
-          break;
-        case C.TYPE_OTHER:
-          result = new ProgressiveMediaSource.Factory(mediaDataSourceFactory) //
-              .createMediaSource(uri);
-          break;
-        default:
-          throw new IllegalStateException("Unsupported type: " + type);
-      }
+    MediaSourceBuilder DEFAULT = new MediaSourceBuilder() {
+        @NonNull
+        @Override
+        public MediaSource buildMediaSource(@NonNull Context context, @NonNull Uri uri,
+                                            @Nullable String ext, @Nullable Handler handler,
+                                            @NonNull DataSource.Factory manifestDataSourceFactory,
+                                            @NonNull DataSource.Factory mediaDataSourceFactory, MediaSourceEventListener listener) {
+            @ContentType int type = isEmpty(ext) ? inferContentType(uri) : inferContentType("." + ext);
+            MediaSource result;
+            switch (type) {
+                case C.CONTENT_TYPE_SS:
+                    result = new SsMediaSource.Factory(
+                            new DefaultSsChunkSource.Factory(mediaDataSourceFactory), manifestDataSourceFactory)
+                            .createMediaSource(MediaItem.fromUri(uri));
+                    break;
+                case C.CONTENT_TYPE_DASH:
+                    result = new DashMediaSource.Factory(
+                            new DefaultDashChunkSource.Factory(mediaDataSourceFactory), manifestDataSourceFactory)
+                            .createMediaSource(MediaItem.fromUri(uri));
+                    break;
+                case C.CONTENT_TYPE_HLS:
+                    result = new HlsMediaSource.Factory(mediaDataSourceFactory) //
+                            .createMediaSource(MediaItem.fromUri(uri));
+                    break;
+                case C.CONTENT_TYPE_OTHER:
+                    result = new ProgressiveMediaSource.Factory(mediaDataSourceFactory) //
+                            .createMediaSource(MediaItem.fromUri(uri));
+                    break;
+                default:
+                    throw new IllegalStateException("Unsupported type: " + type);
+            }
 
-      result.addEventListener(handler, listener);
-      return result;
-    }
-  };
+            result.addEventListener(handler, listener);
+            return result;
+        }
+    };
 
-  MediaSourceBuilder LOOPING = new MediaSourceBuilder() {
+    MediaSourceBuilder LOOPING = new MediaSourceBuilder() {
 
-    @NonNull @Override
-    public MediaSource buildMediaSource(@NonNull Context context, @NonNull Uri uri,
-        @Nullable String fileExt, @Nullable Handler handler,
-        @NonNull DataSource.Factory manifestDataSourceFactory,
-        @NonNull DataSource.Factory mediaDataSourceFactory,
-        @Nullable MediaSourceEventListener listener) {
-      return new LoopingMediaSource(
-          DEFAULT.buildMediaSource(context, uri, fileExt, handler, manifestDataSourceFactory,
-              mediaDataSourceFactory, listener));
-    }
-  };
+        @NonNull
+        @Override
+        public MediaSource buildMediaSource(@NonNull Context context, @NonNull Uri uri,
+                                            @Nullable String fileExt, @Nullable Handler handler,
+                                            @NonNull DataSource.Factory manifestDataSourceFactory,
+                                            @NonNull DataSource.Factory mediaDataSourceFactory,
+                                            @Nullable MediaSourceEventListener listener) {
+            return new LoopingMediaSource(
+                    DEFAULT.buildMediaSource(context, uri, fileExt, handler, manifestDataSourceFactory,
+                            mediaDataSourceFactory, listener));
+        }
+    };
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/Playable.java b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/Playable.java
index a713b5a7..fb9e177e 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/Playable.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/Playable.java
@@ -20,20 +20,20 @@ import androidx.annotation.FloatRange;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
-import com.google.android.exoplayer2.ExoPlaybackException;
+import com.google.android.exoplayer2.PlaybackException;
 import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.SimpleExoPlayer;
 import com.google.android.exoplayer2.Timeline;
+import com.google.android.exoplayer2.Tracks;
 import com.google.android.exoplayer2.metadata.Metadata;
 import com.google.android.exoplayer2.metadata.MetadataOutput;
 import com.google.android.exoplayer2.source.MediaSource;
-import com.google.android.exoplayer2.source.TrackGroupArray;
 import com.google.android.exoplayer2.text.Cue;
+import com.google.android.exoplayer2.text.CueGroup;
 import com.google.android.exoplayer2.text.TextOutput;
-import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import com.google.android.exoplayer2.ui.PlayerView;
-import com.google.android.exoplayer2.video.VideoListener;
+import com.google.android.exoplayer2.video.VideoSize;
 
 import java.util.List;
 import java.util.concurrent.CopyOnWriteArraySet;
@@ -44,7 +44,7 @@ import ml.docilealligator.infinityforreddit.videoautoplay.media.VolumeInfo;
 
 /**
  * Define an interface to control a playback, specific for {@link SimpleExoPlayer} and {@link PlayerView}.
- *
+ * <p>
  * This interface is designed to be reused across Config change. Implementation must not hold any
  * strong reference to Activity, and if it supports any kind of that, make sure to implicitly clean
  * it up.
@@ -56,310 +56,350 @@ import ml.docilealligator.infinityforreddit.videoautoplay.media.VolumeInfo;
 @SuppressWarnings("unused") //
 public interface Playable {
 
-  /**
-   * Prepare the resource for a {@link SimpleExoPlayer}. This method should:
-   * - Request for new {@link SimpleExoPlayer} instance if there is not a usable one.
-   * - Configure {@link EventListener} for it.
-   * - If there is non-trivial PlaybackInfo, update it to the SimpleExoPlayer.
-   * - If client request to prepare MediaSource, then prepare it.
-   *
-   * This method must be called before {@link #setPlayerView(PlayerView)}.
-   *
-   * @param prepareSource if {@code true}, also prepare the MediaSource when preparing the Player,
-   * if {@code false} just do nothing for the MediaSource.
-   */
-  void prepare(boolean prepareSource);
-
-  /**
-   * Set the {@link PlayerView} for this Playable. It is expected that a playback doesn't require a
-   * UI, so this setup is optional. But it must be called after the SimpleExoPlayer is prepared,
-   * that is after {@link #prepare(boolean)} and before {@link #release()}.
-   *
-   * Changing the PlayerView during playback is expected, though not always recommended, especially
-   * on old Devices with low Android API.
-   *
-   * @param playerView the PlayerView to set to the SimpleExoPlayer.
-   */
-  void setPlayerView(@Nullable PlayerView playerView);
-
-  /**
-   * Get current {@link PlayerView} of this Playable.
-   *
-   * @return current PlayerView instance of this Playable.
-   */
-  @Nullable PlayerView getPlayerView();
-
-  /**
-   * Start the playback. If the {@link MediaSource} is not prepared, then also prepare it.
-   */
-  void play();
-
-  /**
-   * Pause the playback.
-   */
-  void pause();
-
-  /**
-   * Reset all resource, so that the playback can start all over again. This is to cleanup the
-   * playback for reuse. The SimpleExoPlayer instance must be still usable without calling
-   * {@link #prepare(boolean)}.
-   */
-  void reset();
-
-  /**
-   * Release all resource. After this, the SimpleExoPlayer is released to the Player pool and the
-   * Playable must call {@link #prepare(boolean)} again to use it again.
-   */
-  void release();
-
-  /**
-   * Get current {@link PlaybackInfo} of the playback.
-   *
-   * @return current PlaybackInfo of the playback.
-   */
-  @NonNull
-  PlaybackInfo getPlaybackInfo();
-
-  /**
-   * Set the custom {@link PlaybackInfo} for this playback. This could suggest a seek.
-   *
-   * @param playbackInfo the PlaybackInfo to set for this playback.
-   */
-  void setPlaybackInfo(@NonNull PlaybackInfo playbackInfo);
-
-  /**
-   * Add a new {@link EventListener} to this Playable. As calling {@link #prepare(boolean)} also
-   * triggers some internal events, this method should be called before {@link #prepare(boolean)} so
-   * that Client could received them all.
-   *
-   * @param listener the EventListener to add, must be not {@code null}.
-   */
-  void addEventListener(@NonNull EventListener listener);
-
-  /**
-   * Remove an {@link EventListener} from this Playable.
-   *
-   * @param listener the EventListener to be removed. If null, nothing happens.
-   */
-  void removeEventListener(EventListener listener);
-
-  /**
-   * !This must only work if the Player in use is a {@link ToroExoPlayer}.
-   */
-  void addOnVolumeChangeListener(@NonNull ToroPlayer.OnVolumeChangeListener listener);
-
-  void removeOnVolumeChangeListener(@Nullable ToroPlayer.OnVolumeChangeListener listener);
-
-  /**
-   * Check if current Playable is playing or not.
-   *
-   * @return {@code true} if this Playable is playing, {@code false} otherwise.
-   */
-  boolean isPlaying();
-
-  /**
-   * Change the volume of current playback.
-   *
-   * @param volume the volume value to be set. Must be a {@code float} of range from 0 to 1.
-   * @deprecated use {@link #setVolumeInfo(VolumeInfo)} instead.
-   */
-  @RemoveIn(version = "3.6.0") @Deprecated  //
-  void setVolume(@FloatRange(from = 0.0, to = 1.0) float volume);
-
-  /**
-   * Obtain current volume value. The returned value is a {@code float} of range from 0 to 1.
-   *
-   * @return current volume value.
-   * @deprecated use {@link #getVolumeInfo()} instead.
-   */
-  @RemoveIn(version = "3.6.0") @Deprecated  //
-  @FloatRange(from = 0.0, to = 1.0) float getVolume();
-
-  /**
-   * Update playback's volume.
-   *
-   * @param volumeInfo the {@link VolumeInfo} to update to.
-   * @return {@code true} if current Volume info is updated, {@code false} otherwise.
-   */
-  boolean setVolumeInfo(@NonNull VolumeInfo volumeInfo);
-
-  /**
-   * Get current {@link VolumeInfo}.
-   */
-  @NonNull VolumeInfo getVolumeInfo();
-
-  /**
-   * Same as {@link Player#setPlaybackParameters(PlaybackParameters)}
-   */
-  void setParameters(@Nullable PlaybackParameters parameters);
-
-  /**
-   * Same as {@link Player#getPlaybackParameters()}
-   */
-  @Nullable PlaybackParameters getParameters();
-
-  void addErrorListener(@NonNull ToroPlayer.OnErrorListener listener);
-
-  void removeErrorListener(@Nullable ToroPlayer.OnErrorListener listener);
-
-  // Combine necessary interfaces.
-  interface EventListener extends Player.EventListener, VideoListener, TextOutput, MetadataOutput {
-
-  }
-
-  /** Default empty implementation */
-  class DefaultEventListener implements EventListener {
-
-    @Override public void onTimelineChanged(Timeline timeline, Object manifest, int reason) {
-
-    }
-
-    @Override
-    public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
-
+    /**
+     * Prepare the resource for a {@link SimpleExoPlayer}. This method should:
+     * - Request for new {@link SimpleExoPlayer} instance if there is not a usable one.
+     * - Configure {@link EventListener} for it.
+     * - If there is non-trivial PlaybackInfo, update it to the SimpleExoPlayer.
+     * - If client request to prepare MediaSource, then prepare it.
+     * <p>
+     * This method must be called before {@link #setPlayerView(PlayerView)}.
+     *
+     * @param prepareSource if {@code true}, also prepare the MediaSource when preparing the Player,
+     *                      if {@code false} just do nothing for the MediaSource.
+     */
+    void prepare(boolean prepareSource);
+
+    /**
+     * Set the {@link PlayerView} for this Playable. It is expected that a playback doesn't require a
+     * UI, so this setup is optional. But it must be called after the SimpleExoPlayer is prepared,
+     * that is after {@link #prepare(boolean)} and before {@link #release()}.
+     * <p>
+     * Changing the PlayerView during playback is expected, though not always recommended, especially
+     * on old Devices with low Android API.
+     *
+     * @param playerView the PlayerView to set to the SimpleExoPlayer.
+     */
+    void setPlayerView(@Nullable PlayerView playerView);
+
+    /**
+     * Get current {@link PlayerView} of this Playable.
+     *
+     * @return current PlayerView instance of this Playable.
+     */
+    @Nullable
+    PlayerView getPlayerView();
+
+    /**
+     * Start the playback. If the {@link MediaSource} is not prepared, then also prepare it.
+     */
+    void play();
+
+    /**
+     * Pause the playback.
+     */
+    void pause();
+
+    /**
+     * Reset all resource, so that the playback can start all over again. This is to cleanup the
+     * playback for reuse. The SimpleExoPlayer instance must be still usable without calling
+     * {@link #prepare(boolean)}.
+     */
+    void reset();
+
+    /**
+     * Release all resource. After this, the SimpleExoPlayer is released to the Player pool and the
+     * Playable must call {@link #prepare(boolean)} again to use it again.
+     */
+    void release();
+
+    /**
+     * Get current {@link PlaybackInfo} of the playback.
+     *
+     * @return current PlaybackInfo of the playback.
+     */
+    @NonNull
+    PlaybackInfo getPlaybackInfo();
+
+    /**
+     * Set the custom {@link PlaybackInfo} for this playback. This could suggest a seek.
+     *
+     * @param playbackInfo the PlaybackInfo to set for this playback.
+     */
+    void setPlaybackInfo(@NonNull PlaybackInfo playbackInfo);
+
+    /**
+     * Add a new {@link EventListener} to this Playable. As calling {@link #prepare(boolean)} also
+     * triggers some internal events, this method should be called before {@link #prepare(boolean)} so
+     * that Client could received them all.
+     *
+     * @param listener the EventListener to add, must be not {@code null}.
+     */
+    void addEventListener(@NonNull EventListener listener);
+
+    /**
+     * Remove an {@link EventListener} from this Playable.
+     *
+     * @param listener the EventListener to be removed. If null, nothing happens.
+     */
+    void removeEventListener(EventListener listener);
+
+    /**
+     * !This must only work if the Player in use is a {@link ToroExoPlayer}.
+     */
+    void addOnVolumeChangeListener(@NonNull ToroPlayer.OnVolumeChangeListener listener);
+
+    void removeOnVolumeChangeListener(@Nullable ToroPlayer.OnVolumeChangeListener listener);
+
+    /**
+     * Check if current Playable is playing or not.
+     *
+     * @return {@code true} if this Playable is playing, {@code false} otherwise.
+     */
+    boolean isPlaying();
+
+    /**
+     * Change the volume of current playback.
+     *
+     * @param volume the volume value to be set. Must be a {@code float} of range from 0 to 1.
+     * @deprecated use {@link #setVolumeInfo(VolumeInfo)} instead.
+     */
+    @RemoveIn(version = "3.6.0")
+    @Deprecated
+    //
+    void setVolume(@FloatRange(from = 0.0, to = 1.0) float volume);
+
+    /**
+     * Obtain current volume value. The returned value is a {@code float} of range from 0 to 1.
+     *
+     * @return current volume value.
+     * @deprecated use {@link #getVolumeInfo()} instead.
+     */
+    @RemoveIn(version = "3.6.0")
+    @Deprecated  //
+    @FloatRange(from = 0.0, to = 1.0)
+    float getVolume();
+
+    /**
+     * Update playback's volume.
+     *
+     * @param volumeInfo the {@link VolumeInfo} to update to.
+     * @return {@code true} if current Volume info is updated, {@code false} otherwise.
+     */
+    boolean setVolumeInfo(@NonNull VolumeInfo volumeInfo);
+
+    /**
+     * Get current {@link VolumeInfo}.
+     */
+    @NonNull
+    VolumeInfo getVolumeInfo();
+
+    /**
+     * Same as {@link Player#setPlaybackParameters(PlaybackParameters)}
+     */
+    void setParameters(@Nullable PlaybackParameters parameters);
+
+    /**
+     * Same as {@link Player#getPlaybackParameters()}
+     */
+    @Nullable
+    PlaybackParameters getParameters();
+
+    void addErrorListener(@NonNull ToroPlayer.OnErrorListener listener);
+
+    void removeErrorListener(@Nullable ToroPlayer.OnErrorListener listener);
+
+    // Combine necessary interfaces.
+    interface EventListener extends Player.Listener, TextOutput, MetadataOutput {
+
+        @Override
+        default void onCues(@NonNull List<Cue> cues) {
+
+        }
+
+        @Override
+        default void onCues(@NonNull CueGroup cueGroup) {
+
+        }
+
+        @Override
+        default void onMetadata(@NonNull Metadata metadata) {
+
+        }
     }
 
-    @Override public void onLoadingChanged(boolean isLoading) {
+    /**
+     * Default empty implementation
+     */
+    class DefaultEventListener implements EventListener {
+        @Override
+        public void onTimelineChanged(@NonNull Timeline timeline, int reason) {
 
-    }
+        }
 
-    @Override public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {
-
-    }
-
-    @Override public void onRepeatModeChanged(int repeatMode) {
-
-    }
+        @Override
+        public void onTracksChanged(@NonNull Tracks tracks) {
 
-    @Override public void onShuffleModeEnabledChanged(boolean shuffleModeEnabled) {
+        }
 
-    }
+        @Override
+        public void onIsLoadingChanged(boolean isLoading) {
 
-    @Override public void onPlayerError(ExoPlaybackException error) {
+        }
 
-    }
+        @Override
+        public void onPlaybackStateChanged(int playbackState) {
 
-    @Override public void onPositionDiscontinuity(int reason) {
+        }
 
-    }
+        @Override
+        public void onRepeatModeChanged(int repeatMode) {
 
-    @Override public void onPlaybackParametersChanged(PlaybackParameters playbackParameters) {
+        }
 
-    }
+        @Override
+        public void onShuffleModeEnabledChanged(boolean shuffleModeEnabled) {
 
-    @Override public void onSeekProcessed() {
+        }
 
-    }
+        @Override
+        public void onPlayerError(@NonNull PlaybackException error) {
 
-    @Override public void onVideoSizeChanged(int width, int height, int unappliedRotationDegrees,
-        float pixelWidthHeightRatio) {
+        }
 
-    }
+        @Override
+        public void onPositionDiscontinuity(@NonNull Player.PositionInfo oldPosition, @NonNull Player.PositionInfo newPosition, int reason) {
 
-    @Override public void onRenderedFirstFrame() {
+        }
 
-    }
+        @Override
+        public void onPlaybackParametersChanged(@NonNull PlaybackParameters playbackParameters) {
 
-    @Override public void onCues(List<Cue> cues) {
+        }
 
-    }
+        @Override
+        public void onSeekProcessed() {
 
-    @Override public void onMetadata(Metadata metadata) {
+        }
 
-    }
-  }
+        @Override
+        public void onVideoSizeChanged(@NonNull VideoSize videoSize) {
+            EventListener.super.onVideoSizeChanged(videoSize);
+        }
 
-  /** List of EventListener */
-  class EventListeners extends CopyOnWriteArraySet<EventListener> implements EventListener {
+        @Override
+        public void onRenderedFirstFrame() {
 
-    EventListeners() {
-    }
+        }
 
-    @Override public void onVideoSizeChanged(int width, int height, int unAppliedRotationDegrees,
-        float pixelWidthHeightRatio) {
-      for (EventListener eventListener : this) {
-        eventListener.onVideoSizeChanged(width, height, unAppliedRotationDegrees,
-            pixelWidthHeightRatio);
-      }
-    }
+        @Override
+        public void onCues(@NonNull CueGroup cueGroup) {
+            EventListener.super.onCues(cueGroup);
+        }
 
-    @Override public void onRenderedFirstFrame() {
-      for (EventListener eventListener : this) {
-        eventListener.onRenderedFirstFrame();
-      }
-    }
-
-    @Override public void onTimelineChanged(Timeline timeline, Object manifest, int reason) {
-      for (EventListener eventListener : this) {
-        eventListener.onTimelineChanged(timeline, manifest, reason);
-      }
-    }
-
-    @Override
-    public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
-      for (EventListener eventListener : this) {
-        eventListener.onTracksChanged(trackGroups, trackSelections);
-      }
-    }
-
-    @Override public void onLoadingChanged(boolean isLoading) {
-      for (EventListener eventListener : this) {
-        eventListener.onLoadingChanged(isLoading);
-      }
-    }
-
-    @Override public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {
-      for (EventListener eventListener : this) {
-        eventListener.onPlayerStateChanged(playWhenReady, playbackState);
-      }
-    }
-
-    @Override public void onRepeatModeChanged(int repeatMode) {
-      for (EventListener eventListener : this) {
-        eventListener.onRepeatModeChanged(repeatMode);
-      }
-    }
-
-    @Override public void onShuffleModeEnabledChanged(boolean shuffleModeEnabled) {
-      for (EventListener eventListener : this) {
-        eventListener.onShuffleModeEnabledChanged(shuffleModeEnabled);
-      }
-    }
-
-    @Override public void onPlayerError(ExoPlaybackException error) {
-      for (EventListener eventListener : this) {
-        eventListener.onPlayerError(error);
-      }
-    }
-
-    @Override public void onPositionDiscontinuity(int reason) {
-      for (EventListener eventListener : this) {
-        eventListener.onPositionDiscontinuity(reason);
-      }
-    }
-
-    @Override public void onPlaybackParametersChanged(PlaybackParameters playbackParameters) {
-      for (EventListener eventListener : this) {
-        eventListener.onPlaybackParametersChanged(playbackParameters);
-      }
-    }
-
-    @Override public void onSeekProcessed() {
-      for (EventListener eventListener : this) {
-        eventListener.onSeekProcessed();
-      }
-    }
+        @Override
+        public void onMetadata(@NonNull Metadata metadata) {
 
-    @Override public void onCues(List<Cue> cues) {
-      for (EventListener eventListener : this) {
-        eventListener.onCues(cues);
-      }
+        }
     }
 
-    @Override public void onMetadata(Metadata metadata) {
-      for (EventListener eventListener : this) {
-        eventListener.onMetadata(metadata);
-      }
+    /**
+     * List of EventListener
+     */
+    class EventListeners extends CopyOnWriteArraySet<EventListener> implements EventListener {
+
+        EventListeners() {
+        }
+
+        @Override
+        public void onVideoSizeChanged(@NonNull VideoSize videoSize) {
+            for (EventListener eventListener : this) {
+                eventListener.onVideoSizeChanged(videoSize);
+            }
+        }
+
+        @Override
+        public void onRenderedFirstFrame() {
+            for (EventListener eventListener : this) {
+                eventListener.onRenderedFirstFrame();
+            }
+        }
+
+        @Override
+        public void onTimelineChanged(@NonNull Timeline timeline, int reason) {
+            for (EventListener eventListener : this) {
+                eventListener.onTimelineChanged(timeline, reason);
+            }
+        }
+
+        @Override
+        public void onTracksChanged(@NonNull Tracks tracks) {
+            for (EventListener eventListener : this) {
+                eventListener.onTracksChanged(tracks);
+            }
+        }
+
+        @Override
+        public void onIsLoadingChanged(boolean isLoading) {
+            for (EventListener eventListener : this) {
+                eventListener.onIsLoadingChanged(isLoading);
+            }
+        }
+
+        @Override
+        public void onPlaybackStateChanged(int playbackState) {
+            for (EventListener eventListener : this) {
+                eventListener.onPlaybackStateChanged(playbackState);
+            }
+        }
+
+        @Override
+        public void onRepeatModeChanged(int repeatMode) {
+            for (EventListener eventListener : this) {
+                eventListener.onRepeatModeChanged(repeatMode);
+            }
+        }
+
+        @Override
+        public void onShuffleModeEnabledChanged(boolean shuffleModeEnabled) {
+            for (EventListener eventListener : this) {
+                eventListener.onShuffleModeEnabledChanged(shuffleModeEnabled);
+            }
+        }
+
+        @Override
+        public void onPlayerError(@NonNull PlaybackException error) {
+            for (EventListener eventListener : this) {
+                eventListener.onPlayerError(error);
+            }
+        }
+
+        @Override
+        public void onPositionDiscontinuity(@NonNull Player.PositionInfo oldPosition, @NonNull Player.PositionInfo newPosition, int reason) {
+            for (EventListener eventListener : this) {
+                eventListener.onPositionDiscontinuity(oldPosition, newPosition, reason);
+            }
+        }
+
+        @Override
+        public void onPlaybackParametersChanged(@NonNull PlaybackParameters playbackParameters) {
+            for (EventListener eventListener : this) {
+                eventListener.onPlaybackParametersChanged(playbackParameters);
+            }
+        }
+
+        @Override
+        public void onCues(@NonNull CueGroup cueGroup) {
+            for (EventListener eventListener : this) {
+                eventListener.onCues(cueGroup);
+            }
+        }
+
+        @Override
+        public void onMetadata(@NonNull Metadata metadata) {
+            for (EventListener eventListener : this) {
+                eventListener.onMetadata(metadata);
+            }
+        }
     }
-  }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/PlayableImpl.java b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/PlayableImpl.java
index d1d47c07..a3f762e9 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/PlayableImpl.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/PlayableImpl.java
@@ -30,7 +30,6 @@ import androidx.annotation.Nullable;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.exoplayer2.Player;
-import com.google.android.exoplayer2.SimpleExoPlayer;
 import com.google.android.exoplayer2.source.MediaSource;
 import com.google.android.exoplayer2.ui.PlayerView;
 
@@ -39,9 +38,9 @@ import ml.docilealligator.infinityforreddit.videoautoplay.media.VolumeInfo;
 
 /**
  * [20180225]
- *
+ * <p>
  * Default implementation of {@link Playable}.
- *
+ * <p>
  * Instance of {@link Playable} should be reusable. Retaining instance of Playable across config
  * change must guarantee that all {@link EventListener} are cleaned up on config change.
  *
@@ -50,238 +49,264 @@ import ml.docilealligator.infinityforreddit.videoautoplay.media.VolumeInfo;
 @SuppressWarnings("WeakerAccess") //
 class PlayableImpl implements Playable {
 
-  private final PlaybackInfo playbackInfo = new PlaybackInfo(); // never expose to outside.
+    private final PlaybackInfo playbackInfo = new PlaybackInfo(); // never expose to outside.
+
+    protected final EventListeners listeners = new EventListeners();  // original listener.
+    protected final ToroPlayer.VolumeChangeListeners volumeChangeListeners = new ToroPlayer.VolumeChangeListeners();
+    protected final ToroPlayer.ErrorListeners errorListeners = new ToroPlayer.ErrorListeners();
+
+    protected final Uri mediaUri; // immutable, parcelable
+    protected final String fileExt;
+    protected final ExoCreator creator; // required, cached
+
+    protected ToroExoPlayer player; // on-demand, cached
+    protected MediaSource mediaSource;  // on-demand, since we do not reuse MediaSource now.
+    protected PlayerView playerView; // on-demand, not always required.
+
+    private boolean sourcePrepared = false;
+    private boolean listenerApplied = false;
+
+    PlayableImpl(ExoCreator creator, Uri uri, String fileExt) {
+        this.creator = creator;
+        this.mediaUri = uri;
+        this.fileExt = fileExt;
+    }
 
-  protected final EventListeners listeners = new EventListeners();  // original listener.
-  protected final ToroPlayer.VolumeChangeListeners volumeChangeListeners = new ToroPlayer.VolumeChangeListeners();
-  protected final ToroPlayer.ErrorListeners errorListeners = new ToroPlayer.ErrorListeners();
+    @CallSuper
+    @Override
+    public void prepare(boolean prepareSource) {
+        if (prepareSource) {
+            ensureMediaSource();
+            ensurePlayerView();
+        }
+    }
 
-  protected final Uri mediaUri; // immutable, parcelable
-  protected final String fileExt;
-  protected final ExoCreator creator; // required, cached
+    @CallSuper
+    @Override
+    public void setPlayerView(@Nullable PlayerView playerView) {
+        if (this.playerView == playerView) return;
+        if (playerView == null) {
+            this.playerView.setPlayer(null);
+        } else {
+            if (this.player != null) {
+                PlayerView.switchTargetView(this.player.getPlayer(), this.playerView, playerView);
+            }
+        }
 
-  protected SimpleExoPlayer player; // on-demand, cached
-  protected MediaSource mediaSource;  // on-demand, since we do not reuse MediaSource now.
-  protected PlayerView playerView; // on-demand, not always required.
+        this.playerView = playerView;
+    }
+
+    @Override
+    public final PlayerView getPlayerView() {
+        return this.playerView;
+    }
 
-  private boolean sourcePrepared = false;
-  private boolean listenerApplied = false;
+    @CallSuper
+    @Override
+    public void play() {
+        ensureMediaSource();
+        ensurePlayerView();
+        checkNotNull(player, "Playable#play(): Player is null!");
+        player.getPlayer().setPlayWhenReady(true);
+    }
+
+    @CallSuper
+    @Override
+    public void pause() {
+        // Player is not required to be non-null here.
+        if (player != null) player.getPlayer().setPlayWhenReady(false);
+    }
+
+    @CallSuper
+    @Override
+    public void reset() {
+        this.playbackInfo.reset();
+        if (player != null) {
+            // reset volume to default
+            ToroExo.setVolumeInfo(this.player, new VolumeInfo(false, 1.f));
+            player.getPlayer().stop();
+            player.getPlayer().clearMediaItems();
+        }
+        this.mediaSource = null; // so it will be re-prepared when play() is called.
+        this.sourcePrepared = false;
+    }
+
+    @CallSuper
+    @Override
+    public void release() {
+        this.setPlayerView(null);
+        if (this.player != null) {
+            // reset volume to default
+            ToroExo.setVolumeInfo(this.player, new VolumeInfo(false, 1.f));
+            player.getPlayer().stop();
+            player.getPlayer().clearMediaItems();
+            if (listenerApplied) {
+                player.getPlayer().removeListener(listeners);
+                if (this.player != null) {
+                    this.player.removeOnVolumeChangeListener(this.volumeChangeListeners);
+                }
+                listenerApplied = false;
+            }
+            with(checkNotNull(creator.getContext(), "ExoCreator has no Context")) //
+                    .releasePlayer(this.creator, this.player.getPlayer());
+        }
+        this.player = null;
+        this.mediaSource = null;
+        this.sourcePrepared = false;
+    }
+
+    @CallSuper
+    @NonNull
+    @Override
+    public PlaybackInfo getPlaybackInfo() {
+        updatePlaybackInfo();
+        return new PlaybackInfo(playbackInfo.getResumeWindow(), playbackInfo.getResumePosition(),
+                playbackInfo.getVolumeInfo());
+    }
+
+    @CallSuper
+    @Override
+    public void setPlaybackInfo(@NonNull PlaybackInfo playbackInfo) {
+        this.playbackInfo.setResumeWindow(playbackInfo.getResumeWindow());
+        this.playbackInfo.setResumePosition(playbackInfo.getResumePosition());
+        this.setVolumeInfo(playbackInfo.getVolumeInfo());
+
+        if (player != null) {
+            ToroExo.setVolumeInfo(player, this.playbackInfo.getVolumeInfo());
+            boolean haveResumePosition = this.playbackInfo.getResumeWindow() != INDEX_UNSET;
+            if (haveResumePosition) {
+                player.getPlayer().seekTo(this.playbackInfo.getResumeWindow(), this.playbackInfo.getResumePosition());
+            }
+        }
+    }
 
-  PlayableImpl(ExoCreator creator, Uri uri, String fileExt) {
-    this.creator = creator;
-    this.mediaUri = uri;
-    this.fileExt = fileExt;
-  }
+    @Override
+    public final void addEventListener(@NonNull EventListener listener) {
+        //noinspection ConstantConditions
+        if (listener != null) this.listeners.add(listener);
+    }
 
-  @CallSuper @Override public void prepare(boolean prepareSource) {
-    if (prepareSource) {
-      ensureMediaSource();
-      ensurePlayerView();
+    @Override
+    public final void removeEventListener(EventListener listener) {
+        this.listeners.remove(listener);
     }
-  }
-
-  @CallSuper @Override public void setPlayerView(@Nullable PlayerView playerView) {
-    if (this.playerView == playerView) return;
-    if (playerView == null) {
-      this.playerView.setPlayer(null);
-    } else {
-      if (this.player != null) {
-        PlayerView.switchTargetView(this.player, this.playerView, playerView);
-      }
+
+    @CallSuper
+    @Override
+    public void setVolume(float volume) {
+        checkNotNull(player, "Playable#setVolume(): Player is null!");
+        playbackInfo.getVolumeInfo().setTo(volume == 0, volume);
+        ToroExo.setVolumeInfo(player, this.playbackInfo.getVolumeInfo());
     }
 
-    this.playerView = playerView;
-  }
-
-  @Override public final PlayerView getPlayerView() {
-    return this.playerView;
-  }
-
-  @CallSuper @Override public void play() {
-    ensureMediaSource();
-    ensurePlayerView();
-    checkNotNull(player, "Playable#play(): Player is null!");
-    player.setPlayWhenReady(true);
-  }
-
-  @CallSuper @Override public void pause() {
-    // Player is not required to be non-null here.
-    if (player != null) player.setPlayWhenReady(false);
-  }
-
-  @CallSuper @Override public void reset() {
-    this.playbackInfo.reset();
-    if (player != null) {
-      // reset volume to default
-      ToroExo.setVolumeInfo(this.player, new VolumeInfo(false, 1.f));
-      player.stop(true);
+    @CallSuper
+    @Override
+    public float getVolume() {
+        return checkNotNull(player.getPlayer(), "Playable#getVolume(): Player is null!").getVolume();
     }
-    this.mediaSource = null; // so it will be re-prepared when play() is called.
-    this.sourcePrepared = false;
-  }
-
-  @CallSuper @Override public void release() {
-    this.setPlayerView(null);
-    if (this.player != null) {
-      // reset volume to default
-      ToroExo.setVolumeInfo(this.player, new VolumeInfo(false, 1.f));
-      this.player.stop(true);
-      if (listenerApplied) {
-        player.removeListener(listeners);
-        player.removeVideoListener(listeners);
-        player.removeTextOutput(listeners);
-        player.removeMetadataOutput(listeners);
-        if (this.player instanceof ToroExoPlayer) {
-          ((ToroExoPlayer) this.player).removeOnVolumeChangeListener(this.volumeChangeListeners);
+
+    @Override
+    public boolean setVolumeInfo(@NonNull VolumeInfo volumeInfo) {
+        boolean changed = !this.playbackInfo.getVolumeInfo().equals(checkNotNull(volumeInfo));
+        if (changed) {
+            this.playbackInfo.getVolumeInfo().setTo(volumeInfo.isMute(), volumeInfo.getVolume());
+            if (player != null) ToroExo.setVolumeInfo(player, this.playbackInfo.getVolumeInfo());
         }
-        listenerApplied = false;
-      }
-      with(checkNotNull(creator.getContext(), "ExoCreator has no Context")) //
-          .releasePlayer(this.creator, this.player);
+        return changed;
+    }
+
+    @NonNull
+    @Override
+    public VolumeInfo getVolumeInfo() {
+        return this.playbackInfo.getVolumeInfo();
+    }
+
+    @Override
+    public void setParameters(@Nullable PlaybackParameters parameters) {
+        checkNotNull(player.getPlayer(), "Playable#setParameters(PlaybackParameters): Player is null") //
+                .setPlaybackParameters(parameters);
     }
-    this.player = null;
-    this.mediaSource = null;
-    this.sourcePrepared = false;
-  }
-
-  @CallSuper @NonNull @Override public PlaybackInfo getPlaybackInfo() {
-    updatePlaybackInfo();
-    return new PlaybackInfo(playbackInfo.getResumeWindow(), playbackInfo.getResumePosition(),
-        playbackInfo.getVolumeInfo());
-  }
-
-  @CallSuper @Override public void setPlaybackInfo(@NonNull PlaybackInfo playbackInfo) {
-    this.playbackInfo.setResumeWindow(playbackInfo.getResumeWindow());
-    this.playbackInfo.setResumePosition(playbackInfo.getResumePosition());
-    this.setVolumeInfo(playbackInfo.getVolumeInfo());
-
-    if (player != null) {
-      ToroExo.setVolumeInfo(player, this.playbackInfo.getVolumeInfo());
-      boolean haveResumePosition = this.playbackInfo.getResumeWindow() != INDEX_UNSET;
-      if (haveResumePosition) {
-        player.seekTo(this.playbackInfo.getResumeWindow(), this.playbackInfo.getResumePosition());
-      }
+
+    @Override
+    public PlaybackParameters getParameters() {
+        return checkNotNull(player.getPlayer(), "Playable#getParameters(): Player is null").getPlaybackParameters();
     }
-  }
-
-  @Override public final void addEventListener(@NonNull EventListener listener) {
-    //noinspection ConstantConditions
-    if (listener != null) this.listeners.add(listener);
-  }
-
-  @Override public final void removeEventListener(EventListener listener) {
-    this.listeners.remove(listener);
-  }
-
-  @CallSuper @Override public void setVolume(float volume) {
-    checkNotNull(player, "Playable#setVolume(): Player is null!");
-    playbackInfo.getVolumeInfo().setTo(volume == 0, volume);
-    ToroExo.setVolumeInfo(player, this.playbackInfo.getVolumeInfo());
-  }
-
-  @CallSuper @Override public float getVolume() {
-    return checkNotNull(player, "Playable#getVolume(): Player is null!").getVolume();
-  }
-
-  @Override public boolean setVolumeInfo(@NonNull VolumeInfo volumeInfo) {
-    boolean changed = !this.playbackInfo.getVolumeInfo().equals(checkNotNull(volumeInfo));
-    if (changed) {
-      this.playbackInfo.getVolumeInfo().setTo(volumeInfo.isMute(), volumeInfo.getVolume());
-      if (player != null) ToroExo.setVolumeInfo(player, this.playbackInfo.getVolumeInfo());
+
+    @Override
+    public void addOnVolumeChangeListener(@NonNull ToroPlayer.OnVolumeChangeListener listener) {
+        volumeChangeListeners.add(checkNotNull(listener));
     }
-    return changed;
-  }
-
-  @NonNull @Override public VolumeInfo getVolumeInfo() {
-    return this.playbackInfo.getVolumeInfo();
-  }
-
-  @Override public void setParameters(@Nullable PlaybackParameters parameters) {
-    checkNotNull(player, "Playable#setParameters(PlaybackParameters): Player is null") //
-        .setPlaybackParameters(parameters);
-  }
-
-  @Override public PlaybackParameters getParameters() {
-    return checkNotNull(player, "Playable#getParameters(): Player is null").getPlaybackParameters();
-  }
-
-  @Override
-  public void addOnVolumeChangeListener(@NonNull ToroPlayer.OnVolumeChangeListener listener) {
-    volumeChangeListeners.add(checkNotNull(listener));
-  }
-
-  @Override
-  public void removeOnVolumeChangeListener(@Nullable ToroPlayer.OnVolumeChangeListener listener) {
-    volumeChangeListeners.remove(listener);
-  }
-
-  @Override public boolean isPlaying() {
-    return player != null && player.getPlayWhenReady();
-  }
-
-  @Override public void addErrorListener(@NonNull ToroPlayer.OnErrorListener listener) {
-    this.errorListeners.add(checkNotNull(listener));
-  }
-
-  @Override public void removeErrorListener(@Nullable ToroPlayer.OnErrorListener listener) {
-    this.errorListeners.remove(listener);
-  }
-
-  final void updatePlaybackInfo() {
-    if (player == null || player.getPlaybackState() == Player.STATE_IDLE) return;
-    playbackInfo.setResumeWindow(player.getCurrentWindowIndex());
-    playbackInfo.setResumePosition(player.isCurrentWindowSeekable() ? //
-        Math.max(0, player.getCurrentPosition()) : TIME_UNSET);
-    playbackInfo.setVolumeInfo(ToroExo.getVolumeInfo(player));
-  }
-
-  private void ensurePlayerView() {
-    if (playerView != null && playerView.getPlayer() != player) playerView.setPlayer(player);
-  }
-
-  // TODO [20180822] Double check this.
-  private void ensureMediaSource() {
-    if (mediaSource == null) {  // Only actually prepare the source when play() is called.
-      sourcePrepared = false;
-      mediaSource = creator.createMediaSource(mediaUri, fileExt);
+
+    @Override
+    public void removeOnVolumeChangeListener(@Nullable ToroPlayer.OnVolumeChangeListener listener) {
+        volumeChangeListeners.remove(listener);
     }
 
-    if (!sourcePrepared) {
-      ensurePlayer(); // sourcePrepared is set to false only when player is null.
-      beforePrepareMediaSource();
-      player.prepare(mediaSource, playbackInfo.getResumeWindow() == C.INDEX_UNSET, false);
-      sourcePrepared = true;
+    @Override
+    public boolean isPlaying() {
+        return player != null && player.getPlayer().getPlayWhenReady();
     }
-  }
-
-  private void ensurePlayer() {
-    if (player == null) {
-      sourcePrepared = false;
-      player = with(checkNotNull(creator.getContext(), "ExoCreator has no Context")) //
-          .requestPlayer(creator);
-      listenerApplied = false;
+
+    @Override
+    public void addErrorListener(@NonNull ToroPlayer.OnErrorListener listener) {
+        this.errorListeners.add(checkNotNull(listener));
+    }
+
+    @Override
+    public void removeErrorListener(@Nullable ToroPlayer.OnErrorListener listener) {
+        this.errorListeners.remove(listener);
     }
 
-    if (!listenerApplied) {
-      if (player instanceof ToroExoPlayer) {
-        ((ToroExoPlayer) player).addOnVolumeChangeListener(volumeChangeListeners);
-      }
-      player.addListener(listeners);
-      player.addVideoListener(listeners);
-      player.addTextOutput(listeners);
-      player.addMetadataOutput(listeners);
-      listenerApplied = true;
+    final void updatePlaybackInfo() {
+        if (player == null || player.getPlayer().getPlaybackState() == Player.STATE_IDLE) return;
+        playbackInfo.setResumeWindow(player.getPlayer().getCurrentWindowIndex());
+        playbackInfo.setResumePosition(player.getPlayer().isCurrentWindowSeekable() ? //
+                Math.max(0, player.getPlayer().getCurrentPosition()) : TIME_UNSET);
+        playbackInfo.setVolumeInfo(ToroExo.getVolumeInfo(player));
     }
 
-    ToroExo.setVolumeInfo(player, this.playbackInfo.getVolumeInfo());
-    boolean haveResumePosition = playbackInfo.getResumeWindow() != C.INDEX_UNSET;
-    if (haveResumePosition) {
-      player.seekTo(playbackInfo.getResumeWindow(), playbackInfo.getResumePosition());
+    private void ensurePlayerView() {
+        if (playerView != null && playerView.getPlayer() != player.getPlayer()) playerView.setPlayer(player.getPlayer());
     }
-  }
 
-  // Trick to inject to the Player creation event.
-  // Required for AdsLoader to set Player.
-  protected void beforePrepareMediaSource() {
-  }
+    // TODO [20180822] Double check this.
+    private void ensureMediaSource() {
+        if (mediaSource == null) {  // Only actually prepare the source when play() is called.
+            sourcePrepared = false;
+            mediaSource = creator.createMediaSource(mediaUri, fileExt);
+        }
+
+        if (!sourcePrepared) {
+            ensurePlayer(); // sourcePrepared is set to false only when player is null.
+            beforePrepareMediaSource();
+            player.getPlayer().prepare(mediaSource, playbackInfo.getResumeWindow() == C.INDEX_UNSET, false);
+            sourcePrepared = true;
+        }
+    }
+
+    private void ensurePlayer() {
+        if (player == null) {
+            sourcePrepared = false;
+            player = with(checkNotNull(creator.getContext(), "ExoCreator has no Context")) //
+                    .requestPlayer(creator);
+            listenerApplied = false;
+        }
+
+        if (!listenerApplied) {
+            player.addOnVolumeChangeListener(volumeChangeListeners);
+            player.getPlayer().addListener(listeners);
+            listenerApplied = true;
+        }
+
+        ToroExo.setVolumeInfo(player, this.playbackInfo.getVolumeInfo());
+        boolean haveResumePosition = playbackInfo.getResumeWindow() != C.INDEX_UNSET;
+        if (haveResumePosition) {
+            player.getPlayer().seekTo(playbackInfo.getResumeWindow(), playbackInfo.getResumePosition());
+        }
+    }
+
+    // Trick to inject to the Player creation event.
+    // Required for AdsLoader to set Player.
+    protected void beforePrepareMediaSource() {
+    }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ToroExo.java b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ToroExo.java
index 147157b6..5d49f0b8 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ToroExo.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ToroExo.java
@@ -16,34 +16,21 @@
 
 package ml.docilealligator.infinityforreddit.videoautoplay;
 
-import static android.widget.Toast.LENGTH_SHORT;
-import static com.google.android.exoplayer2.drm.UnsupportedDrmException.REASON_UNSUPPORTED_SCHEME;
-import static com.google.android.exoplayer2.util.Util.getDrmUuid;
 import static java.lang.Runtime.getRuntime;
 import static ml.docilealligator.infinityforreddit.videoautoplay.ToroUtil.checkNotNull;
 
 import android.annotation.SuppressLint;
 import android.app.Application;
 import android.content.Context;
-import android.text.TextUtils;
-import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.annotation.RequiresApi;
 import androidx.annotation.RestrictTo;
 import androidx.annotation.StringRes;
 import androidx.core.util.Pools;
 
+import com.google.android.exoplayer2.ExoPlayer;
 import com.google.android.exoplayer2.SimpleExoPlayer;
-import com.google.android.exoplayer2.drm.DefaultDrmSessionManager;
-import com.google.android.exoplayer2.drm.DrmSessionManager;
-import com.google.android.exoplayer2.drm.FrameworkMediaCrypto;
-import com.google.android.exoplayer2.drm.FrameworkMediaDrm;
-import com.google.android.exoplayer2.drm.HttpMediaDrmCallback;
-import com.google.android.exoplayer2.drm.UnsupportedDrmException;
-import com.google.android.exoplayer2.upstream.DefaultHttpDataSourceFactory;
-import com.google.android.exoplayer2.upstream.HttpDataSource;
 import com.google.android.exoplayer2.util.Util;
 
 import java.net.CookieHandler;
@@ -52,18 +39,15 @@ import java.net.CookiePolicy;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.Map;
-import java.util.UUID;
 
-import ml.docilealligator.infinityforreddit.R;
 import ml.docilealligator.infinityforreddit.utils.APIUtils;
-import ml.docilealligator.infinityforreddit.videoautoplay.media.DrmMedia;
 import ml.docilealligator.infinityforreddit.videoautoplay.media.VolumeInfo;
 
 /**
  * Global helper class to manage {@link ExoCreator} and {@link SimpleExoPlayer} instances.
  * In this setup, {@link ExoCreator} and SimpleExoPlayer pools are cached. A {@link Config}
  * is a key for each {@link ExoCreator}.
- *
+ * <p>
  * A suggested usage is as below:
  * <pre><code>
  * ExoCreator creator = ToroExo.with(this).getDefaultCreator();
@@ -78,220 +62,152 @@ import ml.docilealligator.infinityforreddit.videoautoplay.media.VolumeInfo;
 
 public final class ToroExo {
 
-  private static final String TAG = "ToroExo";
+    private static final String TAG = "ToroExo";
 
-  // Magic number: Build.VERSION.SDK_INT / 6 --> API 16 ~ 18 will set pool size to 2, etc.
-  @SuppressWarnings("WeakerAccess") //
-  static final int MAX_POOL_SIZE = Math.max(Util.SDK_INT / 6, getRuntime().availableProcessors());
-  @SuppressLint("StaticFieldLeak")  //
-  static volatile ToroExo toro;
+    // Magic number: Build.VERSION.SDK_INT / 6 --> API 16 ~ 18 will set pool size to 2, etc.
+    @SuppressWarnings("WeakerAccess") //
+    static final int MAX_POOL_SIZE = Math.max(Util.SDK_INT / 6, getRuntime().availableProcessors());
+    @SuppressLint("StaticFieldLeak")  //
+    static volatile ToroExo toro;
 
-  public static ToroExo with(Context context) {
-    if (toro == null) {
-      synchronized (ToroExo.class) {
-        if (toro == null) toro = new ToroExo(context.getApplicationContext());
-      }
+    public static ToroExo with(Context context) {
+        if (toro == null) {
+            synchronized (ToroExo.class) {
+                if (toro == null) toro = new ToroExo(context.getApplicationContext());
+            }
+        }
+        return toro;
     }
-    return toro;
-  }
-
-  @NonNull final String appName;
-  @NonNull final Context context;  // Application context
-  @NonNull private final Map<Config, ExoCreator> creators;
-  @NonNull private final Map<ExoCreator, Pools.Pool<SimpleExoPlayer>> playerPools;
 
-  private Config defaultConfig; // will be created on the first time it is used.
+    @NonNull
+    final String appName;
+    @NonNull
+    final Context context;  // Application context
+    @NonNull
+    private final Map<Config, ExoCreator> creators;
+    @NonNull
+    private final Map<ExoCreator, Pools.Pool<ExoPlayer>> playerPools;
+
+    private Config defaultConfig; // will be created on the first time it is used.
+
+    private ToroExo(@NonNull Context context /* Application context */) {
+        this.context = context;
+        this.appName = getUserAgent();
+        this.playerPools = new HashMap<>();
+        this.creators = new HashMap<>();
+
+        // Adapt from ExoPlayer demo app. Start this on demand.
+        CookieManager cookieManager = new CookieManager();
+        cookieManager.setCookiePolicy(CookiePolicy.ACCEPT_ORIGINAL_SERVER);
+        if (CookieHandler.getDefault() != cookieManager) {
+            CookieHandler.setDefault(cookieManager);
+        }
+    }
 
-  private ToroExo(@NonNull Context context /* Application context */) {
-    this.context = context;
-    this.appName = getUserAgent();
-    this.playerPools = new HashMap<>();
-    this.creators = new HashMap<>();
+    /**
+     * Utility method to produce {@link ExoCreator} instance from a {@link Config}.
+     */
+    public final ExoCreator getCreator(Config config) {
+        ExoCreator creator = this.creators.get(config);
+        if (creator == null) {
+            creator = new DefaultExoCreator(this, config);
+            this.creators.put(config, creator);
+        }
 
-    // Adapt from ExoPlayer demo app. Start this on demand.
-    CookieManager cookieManager = new CookieManager();
-    cookieManager.setCookiePolicy(CookiePolicy.ACCEPT_ORIGINAL_SERVER);
-    if (CookieHandler.getDefault() != cookieManager) {
-      CookieHandler.setDefault(cookieManager);
+        return creator;
     }
-  }
 
-  /**
-   * Utility method to produce {@link ExoCreator} instance from a {@link Config}.
-   */
-  public final ExoCreator getCreator(Config config) {
-    ExoCreator creator = this.creators.get(config);
-    if (creator == null) {
-      creator = new DefaultExoCreator(this, config);
-      this.creators.put(config, creator);
+    @SuppressWarnings("WeakerAccess")
+    public final Config getDefaultConfig() {
+        if (defaultConfig == null) defaultConfig = new Config.Builder(context).build();
+        return defaultConfig;
     }
 
-    return creator;
-  }
-
-  @SuppressWarnings("WeakerAccess") public final Config getDefaultConfig() {
-    if (defaultConfig == null) defaultConfig = new Config.Builder(context).build();
-    return defaultConfig;
-  }
-
-  /**
-   * Get the default {@link ExoCreator}. This ExoCreator is configured by {@link #defaultConfig}.
-   */
-  public final ExoCreator getDefaultCreator() {
-    return getCreator(getDefaultConfig());
-  }
-
-  /**
-   * Request an instance of {@link SimpleExoPlayer}. It can be an existing instance cached by Pool
-   * or new one.
-   *
-   * The creator may or may not be the one created by either {@link #getCreator(Config)} or
-   * {@link #getDefaultCreator()}.
-   *
-   * @param creator the {@link ExoCreator} that is scoped to the {@link SimpleExoPlayer} config.
-   * @return an usable {@link SimpleExoPlayer} instance.
-   */
-  @NonNull  //
-  public final SimpleExoPlayer requestPlayer(@NonNull ExoCreator creator) {
-    SimpleExoPlayer player = getPool(checkNotNull(creator)).acquire();
-    if (player == null) player = creator.createPlayer();
-    return player;
-  }
-
-  /**
-   * Release player to Pool attached to the creator.
-   *
-   * @param creator the {@link ExoCreator} that created the player.
-   * @param player the {@link SimpleExoPlayer} to be released back to the Pool
-   * @return true if player is released to relevant Pool, false otherwise.
-   */
-  @SuppressWarnings({ "WeakerAccess", "UnusedReturnValue" }) //
-  public final boolean releasePlayer(@NonNull ExoCreator creator, @NonNull SimpleExoPlayer player) {
-    return getPool(checkNotNull(creator)).release(player);
-  }
-
-  /**
-   * Release and clear all current cached ExoPlayer instances. This should be called when
-   * client Application runs out of memory ({@link Application#onTrimMemory(int)} for example).
-   */
-  public final void cleanUp() {
-    // TODO [2018/03/07] Test this. Ref: https://stackoverflow.com/a/1884916/1553254
-    for (Iterator<Map.Entry<ExoCreator, Pools.Pool<SimpleExoPlayer>>> it =
-        playerPools.entrySet().iterator(); it.hasNext(); ) {
-      Pools.Pool<SimpleExoPlayer> pool = it.next().getValue();
-      SimpleExoPlayer item;
-      while ((item = pool.acquire()) != null) item.release();
-      it.remove();
+    /**
+     * Get the default {@link ExoCreator}. This ExoCreator is configured by {@link #defaultConfig}.
+     */
+    public final ExoCreator getDefaultCreator() {
+        return getCreator(getDefaultConfig());
     }
-  }
 
-  /// internal APIs
-  private Pools.Pool<SimpleExoPlayer> getPool(ExoCreator creator) {
-    Pools.Pool<SimpleExoPlayer> pool = playerPools.get(creator);
-    if (pool == null) {
-      pool = new Pools.SimplePool<>(MAX_POOL_SIZE);
-      playerPools.put(creator, pool);
+    /**
+     * Request an instance of {@link SimpleExoPlayer}. It can be an existing instance cached by Pool
+     * or new one.
+     * <p>
+     * The creator may or may not be the one created by either {@link #getCreator(Config)} or
+     * {@link #getDefaultCreator()}.
+     *
+     * @param creator the {@link ExoCreator} that is scoped to the {@link SimpleExoPlayer} config.
+     * @return an usable {@link SimpleExoPlayer} instance.
+     */
+    @NonNull  //
+    public final ToroExoPlayer requestPlayer(@NonNull ExoCreator creator) {
+        ExoPlayer player = getPool(checkNotNull(creator)).acquire();
+        if (player == null) player = creator.createPlayer();
+        return new ToroExoPlayer(player);
     }
 
-    return pool;
-  }
-
-  /**
-   * Get a possibly-non-localized String from existing resourceId.
-   */
-  /* pkg */ String getString(@StringRes int resId, @Nullable Object... params) {
-    return params == null || params.length < 1 ?  //
-        this.context.getString(resId) : this.context.getString(resId, params);
-  }
+    /**
+     * Release player to Pool attached to the creator.
+     *
+     * @param creator the {@link ExoCreator} that created the player.
+     * @param player  the {@link SimpleExoPlayer} to be released back to the Pool
+     * @return true if player is released to relevant Pool, false otherwise.
+     */
+    @SuppressWarnings({"WeakerAccess", "UnusedReturnValue"}) //
+    public final boolean releasePlayer(@NonNull ExoCreator creator, @NonNull ExoPlayer player) {
+        return getPool(checkNotNull(creator)).release(player);
+    }
 
-  /**
-   * Utility method to build a {@link DrmSessionManager} that can be used in {@link Config}
-   *
-   * Usage:
-   * <pre><code>
-   *   DrmSessionManager manager = ToroExo.with(context).createDrmSessionManager(mediaDrm);
-   *   Config config = new Config.Builder().setDrmSessionManager(manager);
-   *   ExoCreator creator = ToroExo.with(context).getCreator(config);
-   * </code></pre>
-   */
-  @SuppressWarnings("unused") @RequiresApi(18) @Nullable //
-  public DrmSessionManager<FrameworkMediaCrypto> createDrmSessionManager(@NonNull DrmMedia drm) {
-    DrmSessionManager<FrameworkMediaCrypto> drmSessionManager = null;
-    int errorStringId = R.string.error_drm_unknown;
-    String subString = null;
-    if (Util.SDK_INT < 18) {
-      errorStringId = R.string.error_drm_not_supported;
-    } else {
-      UUID drmSchemeUuid = getDrmUuid(checkNotNull(drm).getType());
-      if (drmSchemeUuid == null) {
-        errorStringId = R.string.error_drm_unsupported_scheme;
-      } else {
-        HttpDataSource.Factory factory = new DefaultHttpDataSourceFactory(appName);
-        try {
-          drmSessionManager = buildDrmSessionManagerV18(drmSchemeUuid, drm.getLicenseUrl(),
-              drm.getKeyRequestPropertiesArray(), drm.multiSession(), factory);
-        } catch (UnsupportedDrmException e) {
-          e.printStackTrace();
-          errorStringId = e.reason == REASON_UNSUPPORTED_SCHEME ? //
-              R.string.error_drm_unsupported_scheme : R.string.error_drm_unknown;
-          if (e.reason == REASON_UNSUPPORTED_SCHEME) {
-            subString = drm.getType();
-          }
+    /**
+     * Release and clear all current cached ExoPlayer instances. This should be called when
+     * client Application runs out of memory ({@link Application#onTrimMemory(int)} for example).
+     */
+    public final void cleanUp() {
+        // TODO [2018/03/07] Test this. Ref: https://stackoverflow.com/a/1884916/1553254
+        for (Iterator<Map.Entry<ExoCreator, Pools.Pool<ExoPlayer>>> it =
+             playerPools.entrySet().iterator(); it.hasNext(); ) {
+            Pools.Pool<ExoPlayer> pool = it.next().getValue();
+            ExoPlayer item;
+            while ((item = pool.acquire()) != null) item.release();
+            it.remove();
         }
-      }
     }
 
-    if (drmSessionManager == null) {
-      String error = TextUtils.isEmpty(subString) ? context.getString(errorStringId)
-          : context.getString(errorStringId) + ": " + subString;
-      Toast.makeText(context, error, LENGTH_SHORT).show();
-    }
+    /// internal APIs
+    private Pools.Pool<ExoPlayer> getPool(ExoCreator creator) {
+        Pools.Pool<ExoPlayer> pool = playerPools.get(creator);
+        if (pool == null) {
+            pool = new Pools.SimplePool<>(MAX_POOL_SIZE);
+            playerPools.put(creator, pool);
+        }
 
-    return drmSessionManager;
-  }
+        return pool;
+    }
 
-  @RequiresApi(18) private static DrmSessionManager<FrameworkMediaCrypto> buildDrmSessionManagerV18(
-      @NonNull UUID uuid, @Nullable String licenseUrl, @Nullable String[] keyRequestPropertiesArray,
-      boolean multiSession, @NonNull HttpDataSource.Factory httpDataSourceFactory)
-      throws UnsupportedDrmException {
-    HttpMediaDrmCallback drmCallback = new HttpMediaDrmCallback(licenseUrl, httpDataSourceFactory);
-    if (keyRequestPropertiesArray != null) {
-      for (int i = 0; i < keyRequestPropertiesArray.length - 1; i += 2) {
-        drmCallback.setKeyRequestProperty(keyRequestPropertiesArray[i],
-            keyRequestPropertiesArray[i + 1]);
-      }
+    /**
+     * Get a possibly-non-localized String from existing resourceId.
+     */
+    /* pkg */ String getString(@StringRes int resId, @Nullable Object... params) {
+        return params == null || params.length < 1 ?  //
+                this.context.getString(resId) : this.context.getString(resId, params);
     }
-    return new DefaultDrmSessionManager<>(uuid, FrameworkMediaDrm.newInstance(uuid), drmCallback,
-        null, multiSession);
-  }
 
-  // Share the code of setting Volume. For use inside library only.
-  @RestrictTo(RestrictTo.Scope.LIBRARY_GROUP) //
-  public static void setVolumeInfo(@NonNull SimpleExoPlayer player,
-      @NonNull VolumeInfo volumeInfo) {
-    if (player instanceof ToroExoPlayer) {
-      ((ToroExoPlayer) player).setVolumeInfo(volumeInfo);
-    } else {
-      if (volumeInfo.isMute()) {
-        player.setVolume(0f);
-      } else {
-        player.setVolume(volumeInfo.getVolume());
-      }
+    // Share the code of setting Volume. For use inside library only.
+    @RestrictTo(RestrictTo.Scope.LIBRARY_GROUP) //
+    public static void setVolumeInfo(@NonNull ToroExoPlayer player,
+                                     @NonNull VolumeInfo volumeInfo) {
+        player.setVolumeInfo(volumeInfo);
     }
-  }
 
-  @SuppressWarnings("WeakerAccess") @RestrictTo(RestrictTo.Scope.LIBRARY_GROUP) //
-  public static VolumeInfo getVolumeInfo(SimpleExoPlayer player) {
-    if (player instanceof ToroExoPlayer) {
-      return new VolumeInfo(((ToroExoPlayer) player).getVolumeInfo());
-    } else {
-      float volume = player.getVolume();
-      return new VolumeInfo(volume == 0, volume);
+    @SuppressWarnings("WeakerAccess")
+    @RestrictTo(RestrictTo.Scope.LIBRARY_GROUP) //
+    public static VolumeInfo getVolumeInfo(ToroExoPlayer player) {
+        return new VolumeInfo(player.getVolumeInfo());
     }
-  }
 
-  @SuppressWarnings("SameParameterValue")
-  private static String getUserAgent() {
-    return APIUtils.USER_AGENT;
-  }
+    @SuppressWarnings("SameParameterValue")
+    private static String getUserAgent() {
+        return APIUtils.USER_AGENT;
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ToroExoPlayer.java b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ToroExoPlayer.java
index 2fe92569..ea8bf638 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ToroExoPlayer.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ToroExoPlayer.java
@@ -23,13 +23,11 @@ import android.os.Looper;
 
 import androidx.annotation.CallSuper;
 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 
+import com.google.android.exoplayer2.ExoPlayer;
 import com.google.android.exoplayer2.LoadControl;
 import com.google.android.exoplayer2.RenderersFactory;
 import com.google.android.exoplayer2.SimpleExoPlayer;
-import com.google.android.exoplayer2.drm.DrmSessionManager;
-import com.google.android.exoplayer2.drm.FrameworkMediaCrypto;
 import com.google.android.exoplayer2.trackselection.TrackSelector;
 import com.google.android.exoplayer2.upstream.BandwidthMeter;
 
@@ -41,53 +39,65 @@ import ml.docilealligator.infinityforreddit.videoautoplay.media.VolumeInfo;
  * @author eneim (2018/03/27).
  */
 @SuppressWarnings("WeakerAccess") //
-public class ToroExoPlayer extends SimpleExoPlayer {
-
-  protected ToroExoPlayer(Context context, RenderersFactory renderersFactory,
-      TrackSelector trackSelector, LoadControl loadControl, BandwidthMeter bandwidthMeter,
-      @Nullable DrmSessionManager<FrameworkMediaCrypto> drmSessionManager, Looper looper) {
-    super(context, renderersFactory, trackSelector, loadControl, bandwidthMeter, drmSessionManager,
-        looper);
-  }
-
-  private ToroPlayer.VolumeChangeListeners listeners;
-
-  public final void addOnVolumeChangeListener(@NonNull ToroPlayer.OnVolumeChangeListener listener) {
-    if (this.listeners == null) this.listeners = new ToroPlayer.VolumeChangeListeners();
-    this.listeners.add(checkNotNull(listener));
-  }
-
-  public final void removeOnVolumeChangeListener(ToroPlayer.OnVolumeChangeListener listener) {
-    if (this.listeners != null) this.listeners.remove(listener);
-  }
-
-  public final void clearOnVolumeChangeListener() {
-    if (this.listeners != null) this.listeners.clear();
-  }
-
-  @CallSuper @Override public void setVolume(float audioVolume) {
-    this.setVolumeInfo(new VolumeInfo(audioVolume == 0, audioVolume));
-  }
-
-  private final VolumeInfo volumeInfo = new VolumeInfo(false, 1f);
-
-  @SuppressWarnings("UnusedReturnValue")
-  public final boolean setVolumeInfo(@NonNull VolumeInfo volumeInfo) {
-    boolean changed = !this.volumeInfo.equals(volumeInfo);
-    if (changed) {
-      this.volumeInfo.setTo(volumeInfo.isMute(), volumeInfo.getVolume());
-      super.setVolume(volumeInfo.isMute() ? 0 : volumeInfo.getVolume());
-      if (listeners != null) {
-        for (ToroPlayer.OnVolumeChangeListener listener : this.listeners) {
-          listener.onVolumeChanged(volumeInfo);
+public class ToroExoPlayer {
+
+    private ExoPlayer player;
+
+    public ToroExoPlayer(Context context, RenderersFactory renderersFactory,
+                            TrackSelector trackSelector, LoadControl loadControl, BandwidthMeter bandwidthMeter,
+                            Looper looper) {
+        player = new ExoPlayer.Builder(context).setRenderersFactory(renderersFactory).setTrackSelector(trackSelector).setLoadControl(loadControl).setBandwidthMeter(bandwidthMeter).setLooper(looper).build();
+    }
+
+    public ToroExoPlayer(ExoPlayer exoPlayer) {
+        this.player = exoPlayer;
+    }
+
+    private ToroPlayer.VolumeChangeListeners listeners;
+
+    public final void addOnVolumeChangeListener(@NonNull ToroPlayer.OnVolumeChangeListener listener) {
+        if (this.listeners == null) this.listeners = new ToroPlayer.VolumeChangeListeners();
+        this.listeners.add(checkNotNull(listener));
+    }
+
+    public final void removeOnVolumeChangeListener(ToroPlayer.OnVolumeChangeListener listener) {
+        if (this.listeners != null) this.listeners.remove(listener);
+    }
+
+    public final void clearOnVolumeChangeListener() {
+        if (this.listeners != null) this.listeners.clear();
+    }
+
+    @CallSuper
+    public void setVolume(float audioVolume) {
+        this.setVolumeInfo(new VolumeInfo(audioVolume == 0, audioVolume));
+    }
+
+    private final VolumeInfo volumeInfo = new VolumeInfo(false, 1f);
+
+    @SuppressWarnings("UnusedReturnValue")
+    public final boolean setVolumeInfo(@NonNull VolumeInfo volumeInfo) {
+        boolean changed = !this.volumeInfo.equals(volumeInfo);
+        if (changed) {
+            this.volumeInfo.setTo(volumeInfo.isMute(), volumeInfo.getVolume());
+            player.setVolume(volumeInfo.isMute() ? 0 : volumeInfo.getVolume());
+            if (listeners != null) {
+                for (ToroPlayer.OnVolumeChangeListener listener : this.listeners) {
+                    listener.onVolumeChanged(volumeInfo);
+                }
+            }
         }
-      }
+
+        return changed;
     }
 
-    return changed;
-  }
+    @SuppressWarnings("unused")
+    @NonNull
+    public final VolumeInfo getVolumeInfo() {
+        return volumeInfo;
+    }
 
-  @SuppressWarnings("unused") @NonNull public final VolumeInfo getVolumeInfo() {
-    return volumeInfo;
-  }
+    public ExoPlayer getPlayer() {
+        return player;
+    }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ToroUtil.java b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ToroUtil.java
index ecfc7d1d..563d5094 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ToroUtil.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ToroUtil.java
@@ -34,82 +34,85 @@ import ml.docilealligator.infinityforreddit.videoautoplay.widget.Container;
 
 public final class ToroUtil {
 
-  @SuppressWarnings("unused") private static final String TAG = "ToroLib:Util";
+    @SuppressWarnings("unused")
+    private static final String TAG = "ToroLib:Util";
 
-  private ToroUtil() {
-    throw new RuntimeException("Meh!");
-  }
+    private ToroUtil() {
+        throw new RuntimeException("Meh!");
+    }
 
-  /**
-   * Get the ratio in range of 0.0 ~ 1.0 the visible area of a {@link ToroPlayer}'s playerView.
-   *
-   * @param player the {@link ToroPlayer} need to investigate.
-   * @param container the {@link ViewParent} that holds the {@link ToroPlayer}. If {@code null}
-   * then this method must returns 0.0f;
-   * @return the value in range of 0.0 ~ 1.0 of the visible area.
-   */
-  @FloatRange(from = 0.0, to = 1.0) //
-  public static float visibleAreaOffset(@NonNull ToroPlayer player, ViewParent container) {
-    if (container == null) return 0.0f;
+    /**
+     * Get the ratio in range of 0.0 ~ 1.0 the visible area of a {@link ToroPlayer}'s playerView.
+     *
+     * @param player    the {@link ToroPlayer} need to investigate.
+     * @param container the {@link ViewParent} that holds the {@link ToroPlayer}. If {@code null}
+     *                  then this method must returns 0.0f;
+     * @return the value in range of 0.0 ~ 1.0 of the visible area.
+     */
+    @FloatRange(from = 0.0, to = 1.0) //
+    public static float visibleAreaOffset(@NonNull ToroPlayer player, ViewParent container) {
+        if (container == null) return 0.0f;
 
-    View playerView = player.getPlayerView();
-    Rect drawRect = new Rect();
-    playerView.getDrawingRect(drawRect);
-    int drawArea = drawRect.width() * drawRect.height();
+        View playerView = player.getPlayerView();
+        Rect drawRect = new Rect();
+        playerView.getDrawingRect(drawRect);
+        int drawArea = drawRect.width() * drawRect.height();
 
-    Rect playerRect = new Rect();
-    boolean visible = playerView.getGlobalVisibleRect(playerRect, new Point());
+        Rect playerRect = new Rect();
+        boolean visible = playerView.getGlobalVisibleRect(playerRect, new Point());
 
-    float offset = 0.f;
-    if (visible && drawArea > 0) {
-      int visibleArea = playerRect.height() * playerRect.width();
-      offset = visibleArea / (float) drawArea;
+        float offset = 0.f;
+        if (visible && drawArea > 0) {
+            int visibleArea = playerRect.height() * playerRect.width();
+            offset = visibleArea / (float) drawArea;
+        }
+        return offset;
     }
-    return offset;
-  }
 
-  /**
-   * Ensures that an object reference passed as a parameter to the calling
-   * method is not null.
-   *
-   * @param reference an object reference
-   * @return the non-null reference that was validated
-   * @throws NullPointerException if {@code reference} is null
-   */
-  public static @NonNull <T> T checkNotNull(final T reference) {
-    if (reference == null) {
-      throw new NullPointerException();
+    /**
+     * Ensures that an object reference passed as a parameter to the calling
+     * method is not null.
+     *
+     * @param reference an object reference
+     * @return the non-null reference that was validated
+     * @throws NullPointerException if {@code reference} is null
+     */
+    public static @NonNull
+    <T> T checkNotNull(final T reference) {
+        if (reference == null) {
+            throw new NullPointerException();
+        }
+        return reference;
     }
-    return reference;
-  }
 
-  /**
-   * Ensures that an object reference passed as a parameter to the calling
-   * method is not null.
-   *
-   * @param reference an object reference
-   * @param errorMessage the exception message to use if the check fails; will
-   * be converted to a string using {@link String#valueOf(Object)}
-   * @return the non-null reference that was validated
-   * @throws NullPointerException if {@code reference} is null
-   */
-  public static @NonNull <T> T checkNotNull(final T reference, final Object errorMessage) {
-    if (reference == null) {
-      throw new NullPointerException(String.valueOf(errorMessage));
+    /**
+     * Ensures that an object reference passed as a parameter to the calling
+     * method is not null.
+     *
+     * @param reference    an object reference
+     * @param errorMessage the exception message to use if the check fails; will
+     *                     be converted to a string using {@link String#valueOf(Object)}
+     * @return the non-null reference that was validated
+     * @throws NullPointerException if {@code reference} is null
+     */
+    public static @NonNull
+    <T> T checkNotNull(final T reference, final Object errorMessage) {
+        if (reference == null) {
+            throw new NullPointerException(String.valueOf(errorMessage));
+        }
+        return reference;
     }
-    return reference;
-  }
 
-  @SuppressWarnings("unchecked")  //
-  public static void wrapParamBehavior(@NonNull final Container container,
-      final Container.BehaviorCallback callback) {
-    container.setBehaviorCallback(callback);
-    ViewGroup.LayoutParams params = container.getLayoutParams();
-    if (params instanceof CoordinatorLayout.LayoutParams) {
-      CoordinatorLayout.Behavior temp = ((CoordinatorLayout.LayoutParams) params).getBehavior();
-      if (temp != null) {
-        ((CoordinatorLayout.LayoutParams) params).setBehavior(new Container.Behavior(temp));
-      }
+    @SuppressWarnings("unchecked")  //
+    public static void wrapParamBehavior(@NonNull final Container container,
+                                         final Container.BehaviorCallback callback) {
+        container.setBehaviorCallback(callback);
+        ViewGroup.LayoutParams params = container.getLayoutParams();
+        if (params instanceof CoordinatorLayout.LayoutParams) {
+            CoordinatorLayout.Behavior temp = ((CoordinatorLayout.LayoutParams) params).getBehavior();
+            if (temp != null) {
+                ((CoordinatorLayout.LayoutParams) params).setBehavior(new Container.Behavior(temp));
+            }
+        }
     }
-  }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ui/ToroControlView.java b/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ui/ToroControlView.java
deleted file mode 100644
index 0ab474db..00000000
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/videoautoplay/ui/ToroControlView.java
+++ /dev/null
@@ -1,278 +0,0 @@
-/*
- * Copyright (c) 2018 Nam Nguyen, nam@ene.im
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ml.docilealligator.infinityforreddit.videoautoplay.ui;
-
-import android.annotation.SuppressLint;
-import android.content.Context;
-import android.util.AttributeSet;
-import android.view.MotionEvent;
-import android.view.View;
-
-import androidx.annotation.NonNull;
-import androidx.core.view.ViewCompat;
-
-import com.google.android.exoplayer2.Player;
-import com.google.android.exoplayer2.SimpleExoPlayer;
-import com.google.android.exoplayer2.ui.PlayerControlView;
-import com.google.android.exoplayer2.ui.PlayerView;
-import com.google.android.exoplayer2.ui.TimeBar;
-
-import java.lang.reflect.Field;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-
-import ml.docilealligator.infinityforreddit.R;
-import ml.docilealligator.infinityforreddit.videoautoplay.ToroExo;
-import ml.docilealligator.infinityforreddit.videoautoplay.ToroExoPlayer;
-import ml.docilealligator.infinityforreddit.videoautoplay.ToroPlayer;
-import ml.docilealligator.infinityforreddit.videoautoplay.media.VolumeInfo;
-
-/**
- * An extension of {@link PlayerControlView} that adds Volume control buttons. It works on-par
- * with {@link PlayerView}. Will be automatically inflated when client uses {@link R.layout.toro_exo_player_view}
- * for {@link PlayerView} layout.
- *
- * @author eneim (2018/08/20).
- * @since 3.6.0.2802
- */
-public class ToroControlView extends PlayerControlView {
-
-  @SuppressWarnings("unused") static final String TAG = "ToroExo:Control";
-
-  // Statically obtain from super class.
-  protected static Method hideAfterTimeoutMethod; // from parent ...
-  protected static boolean hideMethodFetched;
-  protected static Field hideActionField;
-  protected static boolean hideActionFetched;
-
-  final ComponentListener componentListener;
-  final View volumeUpButton;
-  final View volumeOffButton;
-  final TimeBar volumeBar;
-  final VolumeInfo volumeInfo = new VolumeInfo(false, 1);
-
-  public ToroControlView(Context context) {
-    this(context, null);
-  }
-
-  public ToroControlView(Context context, AttributeSet attrs) {
-    this(context, attrs, 0);
-  }
-
-  public ToroControlView(Context context, AttributeSet attrs, int defStyleAttr) {
-    super(context, attrs, defStyleAttr);
-    volumeOffButton = findViewById(R.id.exo_volume_off);
-    volumeUpButton = findViewById(R.id.exo_volume_up);
-    volumeBar = findViewById(R.id.volume_bar);
-    componentListener = new ComponentListener();
-  }
-
-  @Override public void onAttachedToWindow() {
-    super.onAttachedToWindow();
-    if (volumeUpButton != null) volumeUpButton.setOnClickListener(componentListener);
-    if (volumeOffButton != null) volumeOffButton.setOnClickListener(componentListener);
-    if (volumeBar != null) volumeBar.addListener(componentListener);
-
-    updateVolumeButtons();
-  }
-
-  @Override public void onDetachedFromWindow() {
-    super.onDetachedFromWindow();
-    if (volumeUpButton != null) volumeUpButton.setOnClickListener(null);
-    if (volumeOffButton != null) volumeOffButton.setOnClickListener(null);
-    if (volumeBar != null) volumeBar.removeListener(componentListener);
-    this.setPlayer(null);
-  }
-
-  @SuppressLint("ClickableViewAccessibility") @Override
-  public boolean onTouchEvent(MotionEvent event) {
-    // After processing all children' touch event, this View will just stop it here.
-    // User can click to PlayerView to show/hide this view, but since this View's height is not
-    // significantly large, clicking to show/hide may disturb other actions like clicking to button,
-    // seeking the bars, etc. This extension will stop the touch event here so that PlayerView has
-    // nothing to do when User touch this View.
-    return true;
-  }
-
-  @Override public void setPlayer(Player player) {
-    Player current = super.getPlayer();
-    if (current == player) return;
-
-    if (current instanceof ToroExoPlayer) {
-      ((ToroExoPlayer) current).removeOnVolumeChangeListener(componentListener);
-    }
-
-    super.setPlayer(player);
-    current = super.getPlayer();
-    @NonNull final VolumeInfo tempVol;
-    if (current instanceof ToroExoPlayer) {
-      tempVol = ((ToroExoPlayer) current).getVolumeInfo();
-      ((ToroExoPlayer) current).addOnVolumeChangeListener(componentListener);
-    } else if (current instanceof SimpleExoPlayer) {
-      float volume = ((SimpleExoPlayer) current).getVolume();
-      tempVol = new VolumeInfo(volume == 0, volume);
-    } else {
-      tempVol = new VolumeInfo(false, 1f);
-    }
-
-    this.volumeInfo.setTo(tempVol.isMute(), tempVol.getVolume());
-    updateVolumeButtons();
-  }
-
-  @Override protected void onVisibilityChanged(@NonNull View changedView, int visibility) {
-    super.onVisibilityChanged(changedView, visibility);
-    if (changedView == this) updateVolumeButtons();
-  }
-
-  @SuppressWarnings("ConstantConditions") //
-  void updateVolumeButtons() {
-    if (!isVisible() || !ViewCompat.isAttachedToWindow(this)) {
-      return;
-    }
-    boolean requestButtonFocus = false;
-    // if muted then show volumeOffButton, or else show volumeUpButton
-    boolean muted = volumeInfo.isMute();
-    if (volumeOffButton != null) {
-      requestButtonFocus |= muted && volumeOffButton.isFocused();
-      volumeOffButton.setVisibility(muted ? View.VISIBLE : View.GONE);
-    }
-    if (volumeUpButton != null) {
-      requestButtonFocus |= !muted && volumeUpButton.isFocused();
-      volumeUpButton.setVisibility(!muted ? View.VISIBLE : View.GONE);
-    }
-
-    if (volumeBar != null) {
-      volumeBar.setDuration(100);
-      volumeBar.setPosition(muted ? 0 : (long) (volumeInfo.getVolume() * 100));
-    }
-
-    if (requestButtonFocus) {
-      requestButtonFocus();
-    }
-
-    // A hack to access PlayerControlView's hideAfterTimeout. Don't want to re-implement it.
-    // Reflection happens once for all instances, so it should not affect the performance.
-    if (!hideMethodFetched) {
-      try {
-        hideAfterTimeoutMethod = PlayerControlView.class.getDeclaredMethod("hideAfterTimeout");
-        hideAfterTimeoutMethod.setAccessible(true);
-      } catch (NoSuchMethodException e) {
-        e.printStackTrace();
-      }
-      hideMethodFetched = true;
-    }
-
-    if (hideAfterTimeoutMethod != null) {
-      try {
-        hideAfterTimeoutMethod.invoke(this);
-      } catch (IllegalAccessException e) {
-        e.printStackTrace();
-      } catch (InvocationTargetException e) {
-        e.printStackTrace();
-      }
-    }
-  }
-
-  private void requestButtonFocus() {
-    boolean muted = volumeInfo.isMute();
-    if (!muted && volumeUpButton != null) {
-      volumeUpButton.requestFocus();
-    } else if (muted && volumeOffButton != null) {
-      volumeOffButton.requestFocus();
-    }
-  }
-
-  void dispatchOnScrubStart() {
-    // Fetch the 'hideAction' Runnable from super class. We need this to synchronize the show/hide
-    // behaviour when user does something.
-    if (!hideActionFetched) {
-      try {
-        hideActionField = PlayerControlView.class.getDeclaredField("hideAction");
-        hideActionField.setAccessible(true);
-      } catch (NoSuchFieldException e) {
-        e.printStackTrace();
-      }
-      hideActionFetched = true;
-    }
-
-    if (hideActionField != null) {
-      try {
-        removeCallbacks((Runnable) hideActionField.get(this));
-      } catch (IllegalAccessException e) {
-        e.printStackTrace();
-      }
-    }
-  }
-
-  // Scrub Move will always modify actual Volume, there is no 'mute-with-non-zero-volume' state.
-  void dispatchOnScrubMove(long position) {
-    if (position > 100) position = 100;
-    if (position < 0) position = 0;
-
-    float actualVolume = position / (float) 100;
-    this.volumeInfo.setTo(actualVolume == 0, actualVolume);
-    if (getPlayer() instanceof SimpleExoPlayer) {
-      ToroExo.setVolumeInfo((SimpleExoPlayer) getPlayer(), this.volumeInfo);
-    }
-
-    updateVolumeButtons();
-  }
-
-  void dispatchOnScrubStop(long position) {
-    this.dispatchOnScrubMove(position);
-  }
-
-  private class ComponentListener
-      implements OnClickListener, TimeBar.OnScrubListener, ToroPlayer.OnVolumeChangeListener {
-
-    ComponentListener() {
-    }
-
-    @Override public void onClick(View v) {
-      Player player = ToroControlView.super.getPlayer();
-      if (!(player instanceof SimpleExoPlayer)) return;
-      if (v == volumeOffButton) {  // click to vol Off --> unmute
-        volumeInfo.setTo(false, volumeInfo.getVolume());
-      } else if (v == volumeUpButton) {  // click to vol Up --> mute
-        volumeInfo.setTo(true, volumeInfo.getVolume());
-      }
-      ToroExo.setVolumeInfo((SimpleExoPlayer) player, volumeInfo);
-      updateVolumeButtons();
-    }
-
-    /// TimeBar.OnScrubListener
-
-    @Override public void onScrubStart(TimeBar timeBar, long position) {
-      dispatchOnScrubStart();
-    }
-
-    @Override public void onScrubMove(TimeBar timeBar, long position) {
-      dispatchOnScrubMove(position);
-    }
-
-    @Override public void onScrubStop(TimeBar timeBar, long position, boolean canceled) {
-      dispatchOnScrubStop(position);
-    }
-
-    /// ToroPlayer.OnVolumeChangeListener
-
-    @Override public void onVolumeChanged(@NonNull VolumeInfo volumeInfo) {
-      ToroControlView.this.volumeInfo.setTo(volumeInfo.isMute(), volumeInfo.getVolume());
-      updateVolumeButtons();
-    }
-  }
-}