Develop Reference

ExoPlayer occupying memory even after releasing

In the main activity of my app, I show a number of cards to user. when he clicks on any of them, a fragment is opened which contains a ViewPager2. The fragments inside the viewPager2 each contains an ExoPlayer and plays a related video when resumed.
When the user clicks on back button, the fragment must be closed and release all its children (including viewPager2 and its fragments, and exoPlayers). In order to release exoPlayers, I use the following code in OnDestroyView() of the viewPager2 fragments:
#Override
public void onDestroyView() {
super.onDestroyView();
try {
if (player != null && listener != null) {
player.removeListener(listener);
player.release();
player = null;
}
if (playerView != null)
playerView.setPlayer(null);
dashMediaSource = null;
progressiveMediaSource = null;
playerView = null;
listener = null;
} catch (Exception ignored) {
}
}
after that, I ran Android Studio profiler to check app heap and I noticed some objects related to exoPlayer are still in memory:
Now the question is are I making a mistake in releasing the memory and specifically exoPlayers? If not why these objects are still in RAM and how to get rid of them?

How to stop Exoplayer from a Recyclerview when closing an activity?

In my app there is a recyclerview that with an exoplayer. When I leave my app or change the screen, the video keeps playing. I need to make it pause when I leave the screen.
I tried using the onViewRecycled method but the video is only paused when I return to the screen where the video is playing.
#Override
public void onViewRecycled(#NonNull MyViewHolder holder) {
super.onViewRecycled(holder);
if (holder.simpleExoPlayer != null) {
holder.positionExo = holder.simpleExoPlayer.getCurrentPosition();
holder.simpleExoPlayer.setPlayWhenReady(false);
}
}
My Adapter:
#Override
public void onBindViewHolder(MyViewHolder holder, int position) {
//...
holder.simpleExoPlayer = ExoPlayerFactory.newSimpleInstance(context);
// Bind the player to the view.
holder.videoCnt.setPlayer(holder.simpleExoPlayer);
holder.videoUri = Uri.parse(content.getVideo());
// Produces DataSource instances through which media data is loaded.
DataSource.Factory dataSourceFactory = new DefaultDataSourceFactory(context,
Util.getUserAgent(context, context.getString( R.string.app_name)));
// This is the MediaSource representing the media to be played.
MediaSource videoSource = new ProgressiveMediaSource.Factory(dataSourceFactory)
.createMediaSource(holder.videoUri);
// Prepare the player with the source.
holder.simpleExoPlayer.prepare(videoSource);
//...
}
How to pause the video correctly?

Exoplayer2 hls - choose quality [duplicate]

I am currently developing a live and movie player application. I chose ExoPlayer version 2 to play the movie and I do not know much about it. I want to let the user choose the quality of a movie on the player screen, for example, 720p or 1080p or etc.
But I do not know how to get a list of existing qualities and show them to the user.
and the below code is my implementation of SimpleExoPlayer :
private void initPlayer(String path){
Handler handler = new Handler();
// 1. Create a default TrackSelector
BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
TrackSelection.Factory videoTrackSelectionFactory =
new AdaptiveVideoTrackSelection.Factory(bandwidthMeter);
TrackSelector trackSelector =
new DefaultTrackSelector(videoTrackSelectionFactory);
// 2. Create a default LoadControl
LoadControl loadControl = new DefaultLoadControl();
// 3. Create the player
player = ExoPlayerFactory.newSimpleInstance(this, trackSelector, loadControl);
SimpleExoPlayerView playerView = (SimpleExoPlayerView) findViewById(R.id.player_view);
playerView.setPlayer(player);
playerView.setKeepScreenOn(true);
// Produces DataSource instances through which media data is loaded.
DataSource.Factory dataSourceFactory = new DefaultDataSourceFactory(this, Util.getUserAgent(this, "ExoPlayer"));
// This is the MediaSource representing the media to be played.
MediaSource videoSource = new HlsMediaSource(Uri.parse(path),
dataSourceFactory,handler, null);
// Prepare the player with the source.
player.addListener(this);
player.prepare(videoSource);
playerView.requestFocus();
player.setPlayWhenReady(true); // to play video when ready. Use false to pause a video
}
// ExoPlayer Listener Methods :
#Override
public void onTimelineChanged(Timeline timeline, Object manifest) {
}
#Override
public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
}
#Override
public void onLoadingChanged(boolean isLoading) {
}
#Override
public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {
switch (playbackState) {
case ExoPlayer.STATE_BUFFERING:
//You can use progress dialog to show user that video is preparing or buffering so please wait
progressBar.setVisibility(View.VISIBLE);
break;
case ExoPlayer.STATE_IDLE:
//idle state
break;
case ExoPlayer.STATE_READY:
// dismiss your dialog here because our video is ready to play now
progressBar.setVisibility(GONE);
//Toast.makeText(getApplicationContext(),String.valueOf(player.getCurrentTrackSelections().get(0).getSelectedFormat().bitrate),Toast.LENGTH_SHORT).show();
break;
case ExoPlayer.STATE_ENDED:
// do your processing after ending of video
break;
}
}
#Override
public void onPlayerError(ExoPlaybackException error) {
// show user that something went wrong. it can be a dialog
}
#Override
public void onPositionDiscontinuity() {
}
please help to solve this issue.
thanks a lot.

Everything you'd like to achieve is viewable in the ExoPlayer2 demo app. More specifically the PlayerActivity class.
You can also check out this good article on the topic.
The core points you'll want to look into are around track selection (via the TrackSelector) as well as the TrackSelectionHelper. I'll include the important code samples below which will hopefully be enough to get you going. But ultimately just following something similar in the demo app will get you where you need to be.
You'll hold onto the track selector you init the player with and use that for just about everything.
Below is just a block of code to ideally cover the gist of what you're trying to do since the demo does appear to over-complicate things a hair. Also I haven't run the code, but it's close enough.
// These two could be fields OR passed around
int videoRendererIndex;
TrackGroupArray trackGroups;
// This is the body of the logic for see if there are even video tracks
// It also does some field setting
MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
for (int i = 0; i < mappedTrackInfo.length; i++) {
TrackGroupArray trackGroups = mappedTrackInfo.getTrackGroups(i);
if (trackGroups.length != 0) {
switch (player.getRendererType(i)) {
case C.TRACK_TYPE_VIDEO:
videoRendererIndex = i;
return true;
}
}
}
// This next part is actually about getting the list. It doesn't include
// some additional logic they put in for adaptive tracks (DASH/HLS/SS),
// but you can look at the sample for that (TrackSelectionHelper#buildView())
// Below you'd be building up items in a list. This just does
// views directly, but you could just have a list of track names (with indexes)
for (int groupIndex = 0; groupIndex < trackGroups.length; groupIndex++) {
TrackGroup group = trackGroups.get(groupIndex);
for (int trackIndex = 0; trackIndex < group.length; trackIndex++) {
if (trackIndex == 0) {
// Beginning of a new set, the demo app adds a divider
}
CheckedTextView trackView = ...; // The TextView to show in the list
// The below points to a util which extracts the quality from the TrackGroup
trackView.setText(DemoUtil.buildTrackName(group.getFormat(trackIndex)));
}
// Assuming you tagged the view with the groupIndex and trackIndex, you
// can build your override with that info.
Pair<Integer, Integer> tag = (Pair<Integer, Integer>) view.getTag();
int groupIndex = tag.first;
int trackIndex = tag.second;
// This is the override you'd use for something that isn't adaptive.
override = new SelectionOverride(FIXED_FACTORY, groupIndex, trackIndex);
// Otherwise they call their helper for adaptives, which roughly does:
int[] tracks = getTracksAdding(override, trackIndex);
TrackSelection.Factory factory = tracks.length == 1 ? FIXED_FACTORY : adaptiveTrackSelectionFactory;
override = new SelectionOverride(factory, groupIndex, tracks);
// Then we actually set our override on the selector to switch the quality/track
selector.setSelectionOverride(rendererIndex, trackGroups, override);
As I mentioned above, this is a slight oversimplification of the process, but the core part is that you're messing around with the TrackSelector, SelectionOverride, and Track/TrackGroups to get this to work.
You could conceivably copy the demo code verbatim and it should work, but I'd highly recommend taking the time to understand what each piece is doing and tailor your solution to your use case.
If I had more time I'd get it to compile and run. But if you can get my sample going then feel free to edit my post.
Hope that helps :)

I avoid the way as above posted. My way is using the DefaultTrackSelector as follows:
trackSelector.setParameters(trackSelector.getParameters()
.withMaxVideoBitrate(bitrate)
.withMaxVideoSize(width, height));
I've tested with HLS videos and it seems to perform in the right way. I get the bitrate, width and height reading from the HlsManifest.

You can copy the sample codes form this link.
ExoPlayer Video Quality Control.
Note : Do not forget to add the exoplayer dependencies in the built.gradle file
implementation 'com.google.android.exoplayer:exoplayer-core:2.16.1'
implementation 'com.google.android.exoplayer:exoplayer-dash:2.16.1'
implementation 'com.google.android.exoplayer:exoplayer-ui:2.16.1'
implementation 'com.google.android.exoplayer:exoplayer:2.16.1'

Connecting exoplayer with MediaSessionCompat

I want to connect my implementation of exoplayer with the media session object. I set up a SimpleExoPlayerView to show a video. Every time a button is clicked, I want the media session callbacks to fire. I can only get the callbacks to fire when something like a pair of headphones is used. The code used in the app is written below
#OnLifecycleEvent(Lifecycle.Event.ON_CREATE)
public void setUp(LifecycleOwner lifecycleOwner){
// Create a MediaSessionCompat
Log.i("Hoe8", "lco setup called");
mMediaSession = new MediaSessionCompat(activity, "this");
// Enable callbacks from MediaButtons and TransportControls
mMediaSession.setFlags(
MediaSessionCompat.FLAG_HANDLES_MEDIA_BUTTONS |
MediaSessionCompat.FLAG_HANDLES_TRANSPORT_CONTROLS);
// Do not let MediaButtons restart the player when the app is not visible
mMediaSession.setMediaButtonReceiver(null);
// Set an initial PlaybackState with ACTION_PLAY, so media buttons can start the player
mStateBuilder = new PlaybackStateCompat.Builder()
.setActions(
PlaybackStateCompat.ACTION_PLAY |
PlaybackStateCompat.ACTION_PLAY_PAUSE);
mMediaSession.setPlaybackState(mStateBuilder.build());
// MySessionCallback has methods that handle callbacks from a media controller
mMediaSession.setCallback(new MediaSessionCompat.Callback() {
#Override
public void onPlay() {
super.onPlay();
Log.i("Hoe8", "MediaSession callback play called");
mMediaSession.setActive(true);
((JokesAdapter.VideoPostViewHolder) rv).setIsPlaying(true);
((JokesAdapter.VideoPostViewHolder) rv).setHasStarted(true);
}
#Override
public void onPause() {
super.onPause();
((JokesAdapter.VideoPostViewHolder) rv).setIsPlaying(false);
}
#Override
public void onStop() {
super.onStop();
mMediaSession.setActive(false);
((JokesAdapter.VideoPostViewHolder) rv).setIsPlaying(false);
((JokesAdapter.VideoPostViewHolder) rv).setHasStarted(false);
}
});
// Create a MediaControllerCompat
MediaControllerCompat mediaController =
new MediaControllerCompat(activity, mMediaSession);
MediaControllerCompat.setMediaController(activity, mediaController);
//Handler mainHandler = new Handler();
BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
TrackSelection.Factory videoTrackSelectionFactory =
new AdaptiveTrackSelection.Factory(bandwidthMeter);
TrackSelector trackSelector =
new DefaultTrackSelector(videoTrackSelectionFactory);
// 2. Create the player
player = ExoPlayerFactory.newSimpleInstance(activity, trackSelector);
playerView.setPlayer(player);
MediaSessionConnector mediaSessionConnector =
new MediaSessionConnector(mMediaSession);
mediaSessionConnector.setPlayer(player, null,null );
}
Made some changes to the code
public class VideoLifeCyclerObserver implements LifecycleObserver {
MediaSessionCompat mMediaSession;
PlaybackStateCompat.Builder mStateBuilder;
AppCompatActivity activity;
SimpleExoPlayerView playerView;
SimpleExoPlayer player;
ExoPlayer.ExoPlayerComponent rv;
MediaSessionConnector mediaSessionConnector;
public VideoLifeCyclerObserver(AppCompatActivity activity, SimpleExoPlayerView playerView, ExoPlayer.ExoPlayerComponent rv){
this.activity = activity;
this.playerView = playerView;
this.activity.getLifecycle().addObserver(this);
this.rv = rv;
Log.i("Hoe8","video lco created");
}
#OnLifecycleEvent(Lifecycle.Event.ON_CREATE)
public void setUp(LifecycleOwner lifecycleOwner){
// Create a MediaSessionCompat
Log.i("Hoe8", "lco setup called");
mMediaSession = new MediaSessionCompat(activity, "this");
// Create a MediaControllerCompat
MediaControllerCompat mediaController =
new MediaControllerCompat(activity, mMediaSession);
MediaControllerCompat.setMediaController(activity, mediaController);
mediaSessionConnector =
new MediaSessionConnector(mMediaSession, new PlayBackController());
}
#OnLifecycleEvent(Lifecycle.Event.ON_START)
public void startPlayer(LifecycleOwner lifecycleOwner){
BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
TrackSelection.Factory videoTrackSelectionFactory =
new AdaptiveTrackSelection.Factory(bandwidthMeter);
TrackSelector trackSelector =
new DefaultTrackSelector(videoTrackSelectionFactory);
player = ExoPlayerFactory.newSimpleInstance(activity, trackSelector);
playerView.setPlayer(player);
mediaSessionConnector.setPlayer(player, null,null );
}
#OnLifecycleEvent(Lifecycle.Event.ON_PAUSE)
public void tearDown(LifecycleOwner lifecycleOwner){
player.stop();
player.release();
player.sendMessages(new ExoPlayer.ExoPlayerMessage(rv,1,player.getContentPosition()));
}
public class PlayBackController extends DefaultPlaybackController{
#Override
public void onPause(Player player) {
Log.i("Hoe8", "onPause called");
((JokesAdapter.VideoPostViewHolder) rv).setIsPlaying(false);
super.onPause(player);
}
#Override
public void onPlay(Player player) {
Log.i("Hoe8", "MediaSession callback play called 2");
mMediaSession.setActive(true);
((JokesAdapter.VideoPostViewHolder) rv).setIsPlaying(true);
((JokesAdapter.VideoPostViewHolder) rv).setHasStarted(true);
super.onPlay(player);
}
#Override
public void onStop(Player player) {
Log.i("Hoe8", "onStop called");
mMediaSession.setActive(false);
((JokesAdapter.VideoPostViewHolder) rv).setIsPlaying(false);
((JokesAdapter.VideoPostViewHolder) rv).setHasStarted(false);
super.onStop(player);
}
}
}
How can I get the buttons that show in the SimpleExoPlayerView to fire the media session callbacks?

In short:
delete all code in your onCreate starting from (inclusive)
// Enable callbacks from MediaButtons and TransportControls
to (exclusive)
// Create a MediaControllerCompat
:)
More lengthy:
I recommend firing media session callbacks by listening to state transitions of the player instead of by click on buttons. This saves you from doing this for each UI element interacting with the player. That's actually what the MediaSessionConnector does for you.
With the MediaSessionConnector you do not need to manipulate the MediaSession yourself. The connector mediates between the player instance and the media session. This means the connector listens to state transitions of the player and maps the player state to the media session state. The connector also listens for media actions sent by transport controls and delegates them to the player or your app. Note: Your app does not need to provide a MediaSessionCompat.Callback, the connector registers its own (and overrides yours as there can be only one per session).
In general: your app does only interact with the SimpleExoPlayer instance while the connector maps the player state to the session.
Let's start with the basic approach which maps the state of the player to the session which triggers appropriate MediaControllerCompat.Callback methods:
// code running in a activity or service where (this instanceof Context)
mediaSession = new MediaSessionCompat(this, getPackageName());
mediaSessionConnector = new MediaSessionConnector(mediaSession)
mediaSessionConnector.setPlayer(player, null, null);
mediaSession.setActive(true);
You can now prepare and use the player like before, like call setPlayWhenReady(true|false), seekTo(t) and the connector maintains the PlaybackStateCompat which is broadcast to controllers of the session.
The connector does receive and implement a couple of media actions at this level (no need for your own MediaSession.Callback):
PlaybackStateCompat.ACTION_PLAY_PAUSE |
PlaybackStateCompat.ACTION_PLAY |
PlaybackStateCompat.ACTION_PAUSE |
PlaybackStateCompat.ACTION_STOP |
PlaybackStateCompat.ACTION_SET_SHUFFLE_MODE |
PlaybackStateCompat.ACTION_SET_REPEAT_MODE;
PlayFromXYZ actions
You may want to support additional media actions like ACTION_PLAY_FROM_MEDIA_ID. You can do so by providing your PlaybackPreparer:
playbackPreparer = new YourPlaybackPreparer();
mediaSessionConnector.setPlayer(player, playbackPreparer, null);
The connector now delegates actions like ACTION_PLAY_FROM_MEDIA_ID or ACTION_PREPARE_FROM_MEDIA_ID to your playback preparer which creates a MediaSource for the given media ID to prepare the player.
Metadata and Queue management
Also interesting is the ability to map the Timeline of the player directly to queue and metadata of the media session. To do this you can provide a QueueNavigator. There is an abstract TimelineQueueNavigator provided by the extension:
QueueNavigator queueNavigator = new TimelineQueueNavigator(mediaSession) {
#Override
public MediaDescriptionCompat getMediaDescription(int windowIndex) {
// implement this method and read from your backing data:
getMediaDescriptionAtQueuePosition(windowIndex):
return mediaDescription;
}
}
mediaSessionConnector.setQueueNavigator(queueNavigator);
With this media controllers can now read metadata and queue of the session. The queue represents the current Timeline of the player and the metadata of the session describes the window in the Timeline which is currently playing. (more about playlists).
Provided a TimelineQueueNavigator, the connector listens for ACTION_SKIP_TO_NEXT, ACTION_SKIP_TO_PREVIOUS and ACTION_SKIP_TO_QUEUE_ITEM sent by transport controls and navigates along the timeline accordingly.
Lifecycle integration
Please note that you must create the player instance onStart/onResume and release it onPause/onStop. This makes sure codec resources you share with other apps are freed when you are in background. Your code sample does it only once onCreate which is not good citizenship :). See how the ExoPlayer demo app does it.
Please also consider the Medium blog about the MediaSessionConnector.

UI not responding on screen orientation -Android

I am developing an application with mediaplayer. I have handled screen orientation with two layouts. I have used onsavedInstancestate and onrestoreinstancesstate. On screen rotation the layout changes and the mediaplayer state is retained but UI is not responding.
I have saved and retained the state of mediaplayer object
public Object onRetainNonConfigurationInstance()
{
HashMap<String,Object> player = new HashMap<String,Object>();
MediaPlayer instance = mp;
mp = null;
MediaPlayer instance1 = mp1;
mp1 = null;
player.put("mp", instance);
player.put("mp1", instance1);
return player;
}
if(getLastNonConfigurationInstance()!=null)
{
playerhandle = (HashMap<String, Object>) getLastNonConfigurationInstance();
mp = (MediaPlayer)playerhandle.get("mp");
if (mp == null)
{
mp = new MediaPlayer();
}
mp1 = (MediaPlayer)playerhandle.get("mp1");
if (mp1 == null)
{
mp1 = new MediaPlayer();
}
}
and also retained the data with onsavedinstancestate and onrestoreinstancestate .The mediaplayer retains the state after screen orientation(audio plays without interpretation on screen orientation) but the UI is not responding after orientation change. Unable to figure out the problem .....