Develop Reference

Exoplayer can't play only audio for HLS

I have link only audio https://storage.googleapis.com/as-piepme/1465/livestream/1465.fef238cdc9d9eb0b958d4eb23080e28b/index.m3u8 but Exoplayer can't play above link,
it return "source error". But both IOS and Chrome run fine. My code:
SimpleExoPlayer player = new SimpleExoPlayer.Builder(context).build();
player.setMediaItem(MediaItem.fromUri(Uri.parse(linkPlay)));
player.prepare();
player.setPlayWhenReady(true);
Update my solution:
MediaItem mediaItem = new MediaItem.Builder()
.setUri(Uri.parse("https://storage.googleapis.com/as-piepme/1465/livestream/1465.fef238cdc9d9eb0b958d4eb23080e28b/index.m3u8"))
.build();
DefaultHlsExtractorFactory defaultHlsExtractorFactory = new DefaultHlsExtractorFactory(DefaultTsPayloadReaderFactory.FLAG_IGNORE_H264_STREAM, false);
MediaSource mediaSource = new HlsMediaSource.Factory(new DefaultHlsDataSourceFactory(new DefaultDataSourceFactory(context)))
.setExtractorFactory(defaultHlsExtractorFactory)
.setAllowChunklessPreparation(true)
.createMediaSource(mediaItem);
player.setMediaSource(mediaSource);

You need to use a Media source.
Try this sample code.
DataSource.Factory dataSourceFactory = new DefaultHttpDataSourceFactory();
// Create a HLS media source pointing to a playlist uri.
HlsMediaSource hlsMediaSource =
new HlsMediaSource.Factory(dataSourceFactory)
.createMediaSource(MediaItem.fromUri(hlsUri));
// Create a player instance.
SimpleExoPlayer player = new SimpleExoPlayer.Builder(context).build();
// Set the media source to be played.
player.setMediaSource(hlsMediaSource);
// Prepare the player.
player.prepare();
For more details check the documentation.
Update
Use this one.
DefaultTrackSelector trackSelector = new DefaultTrackSelector(this, new AdaptiveTrackSelection.Factory());
DefaultTrackSelector.Parameters trackSelectorParameters = trackSelector.buildUponParameters().setMaxAudioChannelCount(0).build();
trackSelector.setParameters(trackSelectorParameters);
RenderersFactory renderersFactory = new DefaultRenderersFactory(this);
SimpleExoPlayer audioPlayer = = new SimpleExoPlayer.Builder(this, renderersFactory).setTrackSelector(trackSelector).build();
HttpDataSource.Factory factory = new DefaultHttpDataSourceFactory("Online Audio Player", DefaultHttpDataSource.DEFAULT_CONNECT_TIMEOUT_MILLIS, DefaultHttpDataSource.DEFAULT_READ_TIMEOUT_MILLIS, true);
audioPlayer.setMediaSource(new ProgressiveMediaSource.Factory(factory).createMediaSource(MediaItem.fromUri("https://storage.googleapis.com/as-piepme/1465/livestream/1465.fef238cdc9d9eb0b958d4eb23080e28b/index.m3u8")));
audioPlayer.prepare();
audioPlayer.setPlayWhenReady(true);

How to implement seekTo() when using HLS with the ExoPlayer

I am trying to implement a basic radio player that can pause the live stream, rewind it and then fast forward it again.
I think that this functionality should be natively supported from version 2.1 of the ExoPlayer.
However, the rewind and fast-forward controls are grayed out when streaming even though they work when playing local content.
Here is how I am creating the player:
private void initExoPlayer(){
Handler mHandler = new Handler();
String userAgent = "userAgent";
Uri uri = Uri.parse(urlSourceOfStream);
dataSourceFactory = new DefaultHttpDataSourceFactory(
userAgent, null,
DefaultHttpDataSource.DEFAULT_CONNECT_TIMEOUT_MILLIS,
1800000,
true);
mediaSource = new ExtractorMediaSource(uri,dataSourceFactory, Mp3Extractor.FACTORY,
mHandler, null);
bandwidthMeter = new DefaultBandwidthMeter();
trackSelectionFactory =
new AdaptiveTrackSelection.Factory(bandwidthMeter);
trackSelector = new DefaultTrackSelector(trackSelectionFactory);
loadControl = new DefaultLoadControl();
exoPlayer = ExoPlayerFactory.newSimpleInstance(this, trackSelector, loadControl);
exoPlayer.prepare(mediaSource);
((SimpleExoPlayerView) findViewById(R.id.exoPlayer)).setPlayer(exoPlayer);
}
The player can pause successfully, and it seems to be caching the content as I can resume the player after it has been paused for minutes. This also indicates that there should be some cache that can allow me to rewind the content.
I've also tried using the OkHttpDataSourceFactory :
OkHttpClient client = new OkHttpClient.Builder().cache(new Cache(getFilesDir() , 1000)).build();
OkHttpDataSourceFactory okHttpDataSourceFactory = new OkHttpDataSourceFactory(client, userAgent, null);
Trying to rewind the player like this makes the player play from the live stream position and does not rewind the content:
exoPlayer.seekTo(Math.max(exoPlayer.getCurrentPosition() - 1000, 0));
My question in a nutshell: How can I rewind and fast-forward an HLS with the ExoPlayer?
Thanks in advance.

It looks like there is a bug, https://github.com/google/ExoPlayer/issues/87 discussing this, and it's been closed. But I'm not sure if its reached the v2 release, and rather it might be in the dev release, here

ExoPlayer - play two audio tracks simultaneously

Using ExoPlayer i'm trying to play two audio tracks simultaneously.
My idea was to create two MediaSource, and to "combine" between them using MergingMediaSource.
This is what I have done:
Uri uriAudio1 = Uri.parse(AUDIO_URL_1);
Uri uriAudio2 = Uri.parse(AUDIO_URL_2);
MediaSource audioSource1 = new ExtractorMediaSource(uriAudio1, dataSourceFactory, extractorsFactory, mainHandler, null);
MediaSource audioSource2 = new ExtractorMediaSource(uriAudio2, dataSourceFactory, extractorsFactory, mainHandler, null);
MergingMediaSource mergedAudioSource = new MergingMediaSource(audioSource1, audioSource2);
mPlayer.prepare(mergedAudioSource);
How ever instead of hearing both audio tracks in parallel, i hear only the first audioSource1.
Any ideas? Thanks!

Try to set channel count like this
val trackSelector = DefaultTrackSelector()
trackSelector.setParameters(
trackSelector.buildUponParameters()
.setMaxVideoSizeSd()
.setMaxAudioChannelCount(2)
)

It seems that this functionality isn't currently supported, according to issue #2200.

I ran into the same problem, solved it by using two different instances of Exoplayer, one for each audio asset, and playing them at the same time.

You can use ConcatenatingMediaSource :
List<MediaSource> mediaSources = new ArrayList<>();
for (Track track : tracks) {
MediaSource mediaSource = ...//use your uri media source from tack.getPath
mediaSources.add(mediaSource);
}
mediaPlayer.prepare(new ConcatenatingMediaSource(mediaSources.toArray(new MediaSource[mediaSources.size()])));

Internet-radio stream using ExoPlayer v2

I used EXOPlayer v1.5.6 to playing Mp3/AAC AudioStream, but this version a has lot of flaws.
I decided to upgrade to v 2.0.2, but I can't find documentation for playing only Audio Stream.
Please, help.

Here is the developer guide for new version of ExoPlayer - link.
You can play stream from URI this way:
TrackSelector trackSelector = new DefaultTrackSelector(
new Handler(),
new AdaptiveVideoTrackSelection.Factory(
new DefaultBandwidthMeter()
)
);
mediaPlayer = ExoPlayerFactory.newSimpleInstance(
getApplicationContext(),
trackSelector,
new DefaultLoadControl()
);
MediaSource source = new ExtractorMediaSource(
yourURI,
new OkHttpDataSourceFactory(
new OkHttpClient(),
userAgent,
null
),
new DefaultExtractorsFactory(),
null,
null
);
mediaPlayer.prepare(source);
mediaPlayer.setPlayWhenReady(true);

Creating a simple instance of ExoPlayer

I am currently looking to develop an application that utilises Dash through the ExoPlayer in Android.
To begin with I am going through the demo project however am having trouble with even creating a simple working instance of ExoPlayer that can stream mp3 or similar.
Would really appreciate any help anyone can give relating to getting a very simple exoplayer instance working from which i can adapt and build upon or if anyone has any leads for more references or guides which I can follow as there seems to be very little documentation available.
Thanks very much for all and any help!

First of all instantiate your ExoPlayer with this line:
exoPlayer = ExoPlayer.Factory.newInstance(RENDERER_COUNT, minBufferMs, minRebufferMs);
If you want to play audio only you can use these values:
RENDERER_COUNT = 1 //since you want to render simple audio
minBufferMs = 1000
minRebufferMs = 5000
Both buffer values can be tweaked according to your requirements
Now you have to create a DataSource. When you want to stream mp3 you can use the DefaultUriDataSource. You have to pass the Context and a UserAgent. To keep it simple play a local file and pass null as userAgent:
DataSource dataSource = new DefaultUriDataSource(context, null);
Then create the sampleSource:
ExtractorSampleSource sampleSource = new ExtractorSampleSource(
uri, dataSource, new Mp3Extractor(), RENDERER_COUNT, requestedBufferSize);
uri points to your file, as an Extractor you can use a simple default Mp3Extractor if you want to play mp3. requestedBufferSize can be tweaked again according to your requirements. Use 5000 for example.
Now you can create your audio track renderer using the sample source as follows:
MediaCodecAudioTrackRenderer audioRenderer = new MediaCodecAudioTrackRenderer(sampleSource);
Finally call prepare on your exoPlayer instance:
exoPlayer.prepare(audioRenderer);
To start playback call:
exoPlayer.setPlayWhenReady(true);

Here is how you would do it using the new ExoPlayer 2 API, and the SimpleExoPlayer.
First create the player:
DefaultBandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
DataSource.Factory dataSourceFactory = new DefaultDataSourceFactory(context, bandwidthMeter);
TrackSelection.Factory videoTrackSelectionFactory = new AdaptiveTrackSelection.Factory(bandwidthMeter);
DefaultTrackSelector trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);
LoadControl loadControl = new DefaultLoadControl();
SimpleExoPlayer player = ExoPlayerFactory.newSimpleInstance(context, trackSelector, loadControl);
player.addListener(...); // To receive events from the player
Then create your MediaSource. For MP3 you can use ExtractorMediaSource:
ExtractorsFactory extractorsFactory = new DefaultExtractorsFactory();
Uri uri = Uri.parse(mp3UriString);
Handler mainHandler = new Handler(Looper.getMainLooper());
MediaSource mediaSource = new ExtractorMediaSource(uri, dataSourceFactory, extractorsFactory, mainHandler, mediaSourceListener); // Listener defined elsewhere
Then prepare and play when ready:
player.prepare(mediaSource);
player.setPlayWhenReady(true);
For DASH you would use DashMediaSource instead of ExtractorMediaSource.

Today while working on a project, I found that this.myExoPlayer = ExoPlayerFactory.newSimpleInstance(getActivity()); and some others are now deprecated and Android studio suggested to use new way. So I did a quick Google for it but everywhere I found the old way. So I looked into the SimpleExoPlayer.java file, read some methods. So this is how you initialize simpleExoPlayer:
Activity activity = getActivity(); // if you are in a fragment
// Or, activity = YourActivity.this; if you are in an Activity
SimpleExoPlayer simpleExoPlayer = new SimpleExoPlayer.Builder(activity).build();
I hope this is helpful.