DASH

ExoPlayer supports DASH with multiple container formats. Media streams must be demuxed, meaning that video, audio, and text must be defined in distinct AdaptationSet elements in the DASH manifest (CEA-608 is an exception as described in the table below). The contained audio and video sample formats must also be supported (see the sample formats section for details).

Feature	Supported	Comments
Containers
FMP4	YES	Demuxed streams only
WebM	YES	Demuxed streams only
Matroska	YES	Demuxed streams only
MPEG-TS	NO	No support planned
Closed captions/subtitles
TTML	YES	Raw, or embedded in FMP4 according to ISO/IEC 14496-30
WebVTT	YES	Raw, or embedded in FMP4 according to ISO/IEC 14496-30
CEA-608	YES	Embedded in FMP4 when signalled using SCTE Accessibility descriptors
CEA-708	YES	Embedded in FMP4 when signalled using SCTE Accessibility descriptors
Metadata
EMSG metadata	YES	Embedded in FMP4
Content protection
Widevine	YES	"cenc" scheme: API 19+; "cbcs" scheme: API 25+
PlayReady SL2000	YES	Android TV, "cenc" scheme only
ClearKey	YES	API 21+, "cenc" scheme only
Live playback
Regular live playback	YES
Ultra low-latency CMAF live playback	YES
Common Media Client Data (CMCD)	YES	Integration Guide

Using MediaItem

To play a DASH stream, you need to depend on the DASH module.

Kotlin

implementation("androidx.media3:media3-exoplayer-dash:1.4.1")

Groovy

implementation "androidx.media3:media3-exoplayer-dash:1.4.1"

You can then create a MediaItem for a DASH MPD URI and pass it to the player.

Kotlin

// Create a player instance.
val player = ExoPlayer.Builder(context).build()
// Set the media item to be played.
player.setMediaItem(MediaItem.fromUri(dashUri))
// Prepare the player.
player.prepare()

Java

// Create a player instance.
ExoPlayer player = new ExoPlayer.Builder(context).build();
// Set the media item to be played.
player.setMediaItem(MediaItem.fromUri(dashUri));
// Prepare the player.
player.prepare();

If your URI doesn't end with .mpd, you can pass MimeTypes.APPLICATION_MPD to setMimeType of MediaItem.Builder to explicitly indicate the type of the content.

ExoPlayer will automatically adapt between representations defined in the manifest, taking into account both available bandwidth and device capabilities.

Using DashMediaSource

For more customization options, you can create a DashMediaSource and pass it directly to the player instead of a MediaItem.

Kotlin

val dataSourceFactory: DataSource.Factory = DefaultHttpDataSource.Factory()
// Create a dash media source pointing to a dash manifest uri.
val mediaSource: MediaSource =
  DashMediaSource.Factory(dataSourceFactory).createMediaSource(MediaItem.fromUri(dashUri))
// Create a player instance which gets an adaptive track selector by default.
val player = ExoPlayer.Builder(context).build()
// Set the media source to be played.
player.setMediaSource(mediaSource)
// Prepare the player.
player.prepare()

Java

DataSource.Factory dataSourceFactory = new DefaultHttpDataSource.Factory();
// Create a dash media source pointing to a dash manifest uri.
MediaSource mediaSource =
    new DashMediaSource.Factory(dataSourceFactory)
        .createMediaSource(MediaItem.fromUri(dashUri));
// Create a player instance which gets an adaptive track selector by default.
ExoPlayer player = new ExoPlayer.Builder(context).build();
// Set the media source to be played.
player.setMediaSource(mediaSource);
// Prepare the player.
player.prepare();

Accessing the manifest

You can retrieve the current manifest by calling Player.getCurrentManifest. For DASH you should cast the returned object to DashManifest. The onTimelineChanged callback of Player.Listener is also called whenever the manifest is loaded. This will happen once for a on-demand content, and possibly many times for live content. The following code snippet shows how an app can do something whenever the manifest is loaded.

Kotlin

player.addListener(
  object : Player.Listener {
    override fun onTimelineChanged(timeline: Timeline, @TimelineChangeReason reason: Int) {
      val manifest = player.currentManifest
      if (manifest is DashManifest) {
        // Do something with the manifest.
      }
    }
  }
)

Java

player.addListener(
    new Player.Listener() {
      @Override
      public void onTimelineChanged(
          Timeline timeline, @Player.TimelineChangeReason int reason) {
        Object manifest = player.getCurrentManifest();
        if (manifest != null) {
          DashManifest dashManifest = (DashManifest) manifest;
          // Do something with the manifest.
        }
      }
    });

Customizing playback

ExoPlayer provides multiple ways for you to tailor playback experience to your app's needs. See the Customization page for examples.