This release corresponds to the AndroidX media3 1.0.0-alpha03 release.

• Audio:
  • Fix error checking audio capabilities for Dolby Atmos (E-AC3-JOC) in HLS.
• Extractors:
  • FMP4: Fix issue where emsg sample metadata could be output in the wrong order for streams containing both v0 and v1 emsg atoms (#9996).
• Text:
  • Fix the interaction of SingleSampleMediaSource.Factory.setTrackId and MediaItem.SubtitleConfiguration.Builder.setId to prioritise the SubtitleConfiguration field and fall back to the Factory value if it's not set (#10016).
• Ad playback:
  • Fix audio underruns between ad periods in live HLS SSAI streams.

• Core library:
  • Sleep and retry when creating a MediaCodec instance fails. This works around an issue that occurs on some devices when switching a surface from a secure codec to another codec (#8696).
  • Add MediaCodecAdapter.getMetrics() to allow users obtain metrics data from MediaCodec (#9766).
  • Fix Maven dependency resolution (#8353).
  • Disable automatic speed adjustment for live streams that neither have low-latency features nor a user request setting the speed (#9329).
  • Rename DecoderCounters#inputBufferCount to queuedInputBufferCount.
  • Make SimpleExoPlayer.renderers private. Renderers can be accessed via ExoPlayer.getRenderer.
  • Updated some AnalyticsListener.EventFlags constant values to match values in Player.EventFlags.
  • Split AnalyticsCollector into an interface and default implementation to allow it to be stripped by R8 if an app doesn't need it.
• Track selection:
  • Support preferred video role flags in track selection (#9402).
  • Update video track selection logic to take preferred MIME types and role flags into account when selecting multiple video tracks for adaptation (#9519).
  • Update video and audio track selection logic to only choose formats for adaptive selections that have the same level of decoder and hardware support (#9565).
  • Update video track selection logic to prefer more efficient codecs if multiple codecs are supported by primary, hardware-accelerated decoders (#4835).
  • Prefer audio content preferences (for example, the "default" audio track or a track matching the system locale language) over technical track selection constraints (for example, preferred MIME type, or maximum channel count).
  • Prohibit duplicate TrackGroups in a TrackGroupArray. TrackGroups can always be made distinguishable by setting an id in the TrackGroup constructor. This fixes a crash when resuming playback after backgrounding the app with an active track override
    (#9718).
  • Amend logic in AdaptiveTrackSelection to allow a quality increase under sufficient network bandwidth even if playback is very close to the
    live edge (#9784).
• Video:
  • Fix decoder fallback logic for Dolby Vision to use a compatible H264/H265 decoder if needed.
• Audio:
  • Fix decoder fallback logic for Dolby Atmos (E-AC3-JOC) to use a compatible E-AC3 decoder if needed.
  • Change AudioCapabilities APIs to require passing explicitly AudioCapabilities.DEFAULT_AUDIO_CAPABILITIES instead of null.
  • Allow customization of the AudioTrack buffer size calculation by injecting an AudioTrackBufferSizeProvider to DefaultAudioSink (#8891).
  • Retry AudioTrack creation if the requested buffer size was > 1MB (#9712).
• Extractors:
  • Fix incorrect parsing of H.265 SPS NAL units (#9719).
  • Parse Vorbis Comments (including METADATA_BLOCK_PICTURE) in Ogg Opus and Ogg Vorbis files.
• Text:
  • Add a MediaItem.SubtitleConfiguration.id field which is propagated to the Format.id field of the subtitle track created from the configuration (#9673).
  • Add basic support for WebVTT subtitles in Matroska containers (#9886).
  • Prevent Cea708Decoder from reading more than the declared size of a service block.
• DRM:
  • Remove playbackLooper from DrmSessionManager.(pre)acquireSession. When a DrmSessionManager is used by an app in a custom MediaSource, the playbackLooper needs to be passed to DrmSessionManager.setPlayer instead.
• Ad playback / IMA:
  • Add support for IMA Dynamic Ad Insertion (DAI) (#8213).
  • Add a method to AdPlaybackState to allow resetting an ad group so that it can be played again (#9615).
  • Enforce playback speed of 1.0 during ad playback (#9018).
  • Fix issue where an ad group that failed to load caused an immediate playback reset (#9929).
• UI:
  • Fix the color of the numbers in StyledPlayerView rewind and fastforward buttons when using certain themes (#9765).
  • Correctly translate playback speed strings (#9811).
• DASH:
  • Support the forced-subtitle track role (#9727).
  • Stop interpreting the main track role as C.SELECTION_FLAG_DEFAULT.
  • Fix base URL exclusion logic for manifests that do not declare the DVB namespace (#9856).
  • Support relative MPD.Location URLs (#9939).
• HLS:
  • Use chunkless preparation by default to improve start up time. If your renditions contain muxed closed-caption tracks that are not declared in the master playlist, you should add them to the master playlist to be available for playback, or turn off chunkless preparation with HlsMediaSource.Factory.setAllowChunklessPreparation(false).
  • Support key-frame accurate seeking in HLS (#2882).
  • Correctly populate Format.label for audio only HLS streams (#9608).
• RTSP:
  • Provide a client API to override the SocketFactory used for any server connection (#9606).
  • Prefer DIGEST authentication method over BASIC if both are present (#9800).
  • Handle when RTSP track timing is not available (#9775).
  • Ignore invalid RTP-Info header values (#9619).
• Transformer:
  • Increase required min API version to 21.
  • TransformationException is now used to describe errors that occur during a transformation.
  • Add TransformationRequest for specifying the transformation options.
  • Allow multiple listeners to be registered.
  • Fix Transformer being stuck when the codec output is partially read.
  • Fix potential NPE in Transformer.getProgress when releasing the muxer throws.
  • Add a demo app for applying transformations.
  • The transformer module is no longer included by depending on com.google.android.exoplayer:exoplayer. To continue using transformer, add an additional dependency on com.google.android.exoplayer:exoplayer-transformer.
• MediaSession extension:
  • By default, MediaSessionConnector now clears the playlist on stop. Apps that want the playlist to be retained can call setClearMediaItemsOnStop(false) on the connector.
• Cast extension:
  • Fix bug that prevented CastPlayer from calling onIsPlayingChanged correctly (#9792).
  • Support audio metadata including artwork with DefaultMediaItemConverter (#9663).
• FFmpeg extension:
  • Make build_ffmpeg.sh depend on LLVM's bin utils instead of GNU's (#9933).
• Android 12 compatibility:
  • Upgrade the Cast extension to depend on com.google.android.gms:play-services-cast-framework:20.1.0. Earlier versions of play-services-cast-framework are not compatible with apps targeting Android 12, and will crash with an IllegalArgumentException when creating PendingIntents (#9528).
• Remove deprecated symbols:
  • Remove Player.EventListener. Use Player.Listener instead.
  • Remove MediaSourceFactory#setDrmSessionManager, MediaSourceFactory#setDrmHttpDataSourceFactory, and MediaSourceFactory#setDrmUserAgent. Use MediaSourceFactory#setDrmSessionManagerProvider instead.
  • Remove MediaSourceFactory#setStreamKeys. Use MediaItem.Builder#setStreamKeys instead.
  • Remove MediaSourceFactory#createMediaSource(Uri). Use MediaSourceFactory#createMediaSource(MediaItem) instead.
  • Remove setTag from DashMediaSource, HlsMediaSource and SsMediaSource. Use MediaItem.Builder#setTag instead.
  • Remove DashMediaSource#setLivePresentationDelayMs(long, boolean). Use MediaItem.Builder#setLiveConfiguration and MediaItem.LiveConfiguration.Builder#setTargetOffsetMs to override the manifest, or DashMediaSource#setFallbackTargetLiveOffsetMs to provide a fallback value.
  • Remove (Simple)ExoPlayer.setThrowsWhenUsingWrongThread. Opting out of the thread enforcement is no longer possible.
  • Remove ActionFile and ActionFileUpgradeUtil. Use ExoPlayer 2.16.1 or before to use ActionFileUpgradeUtil to merge legacy action files into DefaultDownloadIndex.
  • Remove `ProgressiveMedia...

• Core Library:
  • Fix track selection issue where overriding one track group did not disable other track groups of the same type (#9675).
  • Fix track selection issue where a mixture of non-empty and empty track overrides is not applied correctly (#9649).
  • Add protected method DefaultRenderersFactory.getCodecAdapterFactory() so that subclasses of DefaultRenderersFactory that override buildVideoRenderers() or buildAudioRenderers() can access the codec adapter factory and pass it to MediaCodecRenderer instances they create.
  • Propagate ICY header fields name and genre to MediaMetadata.station and MediaMetadata.genre respectively so that
    they reach the app via Player.Listener.onMediaMetadataChanged() (#9677).
  • Remove null keys from DefaultHttpDataSource#getResponseHeaders.
• Extractors:
  • WAV: Add support for RF64 streams (#9543).
• DASH:
  • Add parsed essential and supplemental properties to the Representation (#9579).
• HLS:
  • Correctly populate Format.label for audio only HLS streams (#9608).

• Core Library:
  • Deprecate SimpleExoPlayer. All functionality has been moved to ExoPlayer instead. ExoPlayer.Builder can be used instead of SimpleExoPlayer.Builder.
  • Add track selection methods to the Player interface, for example, Player.getCurrentTracksInfo and Player.setTrackSelectionParameters. These methods can be used instead of directly accessing the track selector.
  • Enable MediaCodec asynchronous queueing by default on devices with API level >= 31. Add methods in DefaultMediaCodecRendererFactory and DefaultRenderersFactory to force enable or force disable asynchronous queueing (6348).
  • Remove final dependency on jcenter().
  • Fix mediaMetadata being reset when media is repeated (#9458).
  • Adjust ExoPlayer MediaMetadata update priority, such that values input through the MediaItem.MediaMetadata are used above media derived values.
  • Move com.google.android.exoplayer2.device.DeviceInfo to com.google.android.exoplayer2.DeviceInfo.
  • Move com.google.android.exoplayer2.drm.DecryptionException to com.google.android.exoplayer2.decoder.CryptoException.
  • Move com.google.android.exoplayer2.upstream.cache.CachedRegionTracker to com.google.android.exoplayer2.upstream.CachedRegionTracker.
  • Move Player.addListener(EventListener) and Player.removeListener(EventListener) out of Player into subclasses.
• Android 12 compatibility:
  • Keep DownloadService started and in the foreground whilst waiting for requirements to be met on Android 12. This is necessary due to new foreground service launch restrictions. DownloadService.getScheduler will not be called on Android 12 devices.
  • Disable platform transcoding when playing content URIs on Android 12.
  • Add ExoPlayer.setVideoChangeFrameRateStrategy to allow disabling of calls from the player to Surface.setFrameRate. This is useful for applications wanting to call Surface.setFrameRate directly from application code with Android 12's Surface.CHANGE_FRAME_RATE_ALWAYS.
  • Upgrade the WorkManager extension to depend on androidx.work:work-runtime:2.7.0. Earlier versions of work-runtime
    are not compatible with apps targeting Android 12, and will crash with an IllegalArgumentException when creating PendingIntents (#9181).
• Video:
  • Fix bug in MediaCodecVideoRenderer that resulted in re-using a released Surface when playing without an app-provided Surface (#9476).
• DRM:
  • Log an error (instead of throwing IllegalStateException) when calling DefaultDrmSession#release() on a fully released session
    (#9392).
• UI:
  • SubtitleView no longer implements TextOutput. SubtitleView implements Player.Listener, so can be registered to a player with Player.addListener.
  • Fix initial timestamp display in PlayerControlView (#9524).
  • Fix capitalization of languages in the track selector (#9452).
• Extractors:
  • MP4: Correctly handle HEVC tracks with pixel aspect ratios other than 1.
  • MP4: Add support for Dolby TrueHD (only for unfragmented streams) (#9496).
  • MP4: Avoid throwing ArrayIndexOutOfBoundsException when parsing invalid colr boxes produced by some device cameras (#9332).
  • MP4: Parse HDR static metadata from the clli and mdcv boxes.
  • TS: Correctly handle HEVC tracks with pixel aspect ratios other than 1.
  • TS: Map stream type 0x80 to H262 (#9472).
• Downloads and caching:
  • Modify DownloadService behavior when DownloadService.getScheduler returns null, or returns a Scheduler that does not support the requirements for downloads to continue. In both cases, DownloadService will now remain started and in the foreground whilst waiting for requirements to be met.
  • Modify DownloadService behavior when running on Android 12 and above. See the "Android 12 compatibility" section above.
• RTSP:
  • Support RFC4566 SDP attribute field grammar (#9430).
• DASH:
  • Populate Format.sampleMimeType, width and height for image AdaptationSet elements (#9500).
• HLS:
  • Fix rounding error in HLS playlists (#9575).
  • Fix NoSuchElementException thrown when an HLS manifest declares #EXT-X-RENDITION-REPORT at the beginning of the playlist (#9592).
• RTMP extension:
  • Upgrade to io.antmedia:rtmp_client, which does not rely on jcenter() (#9591).
• MediaSession extension:
  • Rename MediaSessionConnector.QueueNavigator#onCurrentWindowIndexChanged to onCurrentMediaItemIndexChanged.
• Transformer:
  • Avoid sending a duplicate timestamp to the encoder with the end of stream buffer.
• Remove deprecated symbols:
  • Remove Renderer.VIDEO_SCALING_MODE_* constants. Use identically named constants in C instead.
  • Remove C.MSG_* constants. Use identically named constants in Renderer instead, except for C.MSG_SET_SURFACE, which is replaced with Renderer.MSG_SET_VIDEO_OUTPUT.
  • Remove DeviceListener. Use Player.Listener instead.
  • Remove CacheDataSourceFactory. Use CacheDataSource.Factory instead.
  • Remove CacheDataSinkFactory. Use CacheDataSink.Factory instead.
  • Remove FileDataSourceFactory. Use FileDataSource.Factory instead.
  • Remove SimpleExoPlayer.addMetadataOutput and removeMetadataOutput. Use Player.addListener and Player.Listener instead.
  • Remove SimpleExoPlayer.addAudioListener, removeAudioListener and AudioListener. Use Player.addListener and Player.Listener instead.
  • Remove SimpleExoPlayer.addVideoListener, removeVideoListener and VideoListener. Use Player.addListener and Player.Listener instead.
  • Remove DefaultHttpDataSourceFactory. Use DefaultHttpDataSource.Factory instead.
  • Remove SingleSampleMediaSource.createMediaSource(Uri, Format, long). Use SingleSampleMediaSource.createMediaSource(MediaItem.Subtitle, long) instead.
  • Remove HttpDataSource.Factory.getDefaultRequestProperties. Use HttpDataSource.Factory.setDefaultRequestProperties instead.
  • Remove GvrAudioProcessor and the GVR extension, which has been deprecated since 2.11.0.
  • Remove DownloadService.onDownloadChanged and DownloadService.onDownloadRemoved. Instead, use
    DownloadManager.addListener to register a listener directly to the DownloadManager returned through DownloadService.getDownloadManager.
  • Remove Player.getCurrentStaticMetadata, Player.Listener.onStaticMetadataChanged and
    Player.EVENT_STATIC_METADATA_CHANGED. Use Player.getMediaMetadata, Player.Listener.onMediaMetadataChanged and
    Player.EVENT_MEDIA_METADATA_CHANGED for convenient access to structured metadata, or access the raw static metadata directly from the TrackSelection#getFormat().
  • Remove ControlDispatcher and DefaultControlDispatcher. Operations can be customized by using a ForwardingPlayer, or when configuring the player (for example by using ExoPlayer.Builder.setSeekBackIncrementMs).

• Core Library:
  • Fix track selection in StyledPlayerControlView when using ForwardingPlayer.
  • Fix FlagSet#equals on API levels below 24.
  • Fix NullPointerException being thrown from CacheDataSource when reading a fully cached resource with DataSpec.position equal to the resource length.
  • Fix a bug when depending on ExoPlayer locally with a relative path (#9403).
  • Better handle invalid seek requests. Seeks to positions that are before the start or after the end of the media are now handled as seeks to the start and end respectively (8906).
  • Rename MimeTypes.AUDIO_DTS_UHD to MimeTypes.AUDIO_DTS_X and add required profile to its value (#9429).
• Extractors:
  • Support TS packets without PTS flag (#9294).
  • Fix issue decoding ID3 tags containing UTF-16 encoded strings (#9087).
• Video:
  • Request smaller decoder input buffers for Dolby Vision. This fixes an issue that could cause UHD Dolby Vision playbacks to fail on some devices, including Amazon Fire TV 4K.
• DRM:
  • Fix DefaultDrmSessionManager to correctly eagerly release preacquired DRM sessions when there's a shortage of DRM resources on the device.
• Downloads and caching:
  • Workaround platform issue that can cause a SecurityException to be thrown from Requirements.isInternetConnectivityValidated on devices running Android 11 (#9002).
• DASH:
  • Use identical cache keys for downloading and playing DASH segments (#9370).
  • Fix base URL selection and load error handling when base URLs are shared across adaptation sets.
• HLS:
  • Fix bug where the player would get stuck if all download attempts fail and would not raise an error to the application (#9390).
• RTSP:
  • Handle when additional spaces are in SDP's RTPMAP atrribute (#9379).
  • Handle partial URIs in RTP-Info headers (#9346).
  • Fix RTSP Session header handling (#9416).
  • Fix RTSP WWW-Authenticate header parsing (#9428).
• UI:
  • Use defStyleAttr when obtaining styled attributes in StyledPlayerView, PlayerView and PlayerControlView (#9024).
  • Fix accessibility focus in PlayerControlView (#9111).
  • Fix issue that StyledPlayerView and PlayerView don't update UI when available player commands change.
• Cast extension:
  • Implement CastPlayer.setPlaybackParameters(PlaybackParameters) to support setting the playback speed (#6784).

• Core Library:
  • Add MediaCodecAdapter.needsReconfiguration method.
  • Add getSeekBackIncrement, seekBack, getSeekForwardIncrement, seekForward, getMaxSeekToPreviousPosition, seekToPrevious and seekToNext methods to Player.
  • Rename Player methods:
    • hasPrevious to hasPreviousWindow.
    • previous to seekToPreviousWindow.
    • hasNext to hasNextWindow.
    • next to seekToNextWindow.
  • Rename Player commands:
    • COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM to COMMAND_SEEK_IN_CURRENT_WINDOW.
    • COMMAND_SEEK_TO_NEXT_MEDIA_ITEM to COMMAND_SEEK_TO_NEXT_WINDOW.
    • COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM to COMMAND_SEEK_TO_PREVIOUS_WINDOW.
    • COMMAND_SEEK_TO_MEDIA_ITEM to COMMAND_SEEK_TO_WINDOW.
    • COMMAND_GET_MEDIA_ITEMS to COMMAND_GET_TIMELINE.
  • Rename Player.EventFlags IntDef to Player.Event.
  • Make Player depend on the new PlaybackException class instead of ExoPlaybackException:
    • Player.getPlayerError now returns a PlaybackException.
    • Player.Listener.onPlayerError now receives a PlaybackException.
    • Add a new listener method Player.Listener.onPlayerErrorChanged, which is equivalent to onPlayerError except that it is also called when the player error becomes null.
    • Player implementations like ExoPlayer may use PlaybackException subclasses (like ExoPlaybackException), so users can downcast the PlaybackException instance to obtain implementation-specific fields (like ExoPlaybackException.rendererIndex).
  • PlaybackException introduces an errorCode which identifies the cause of the failure in order to simplify error handling (#1611).
  • Add a DefaultMediaDescriptionAdapter for the PlayerNotificationManager, that makes use of the Player MediaMetadata to populate the notification fields.
  • Add @FallbackType to LoadErrorHandlingPolicy to support customization of the exclusion duration for locations and tracks.
  • Change interface of LoadErrorHandlingPolicy to support configuring the behavior of track and location fallback. Location fallback is currently only supported for DASH manifests with multiple base URLs.
  • Restrict use of AudioTrack.isDirectPlaybackSupported to TVs, to avoid listing audio offload encodings as supported for passthrough mode on mobile devices (#9239).
• Extractors:
  • Add support for DTS-UHD in MP4 (#9163).
• Text:
  • TTML: Inherit the rubyPosition value from a containing <span ruby="container"> element.
  • WebVTT: Add support for CSS font-size property (#8964).
• Ad playback:
  • Support changing ad break positions in the player logic (#5067).
  • Support resuming content with an offset after an ad group.
• UI:
  • Add setUseRewindAction and setUseFastForwardAction to PlayerNotificationManager, and setUseFastForwardActionInCompactView and setUseRewindActionInCompactView to show the actions in compact view mode.
  • Remove rewind_increment and fastforward_increment attributes from PlayerControlView and StyledPlayerControlView. These increments can be customized by configuring the Player (see setSeekBackIncrementMs and setSeekForwardIncrementMs in SimpleExoPlayer.Builder), or by using a ForwardingPlayer that overrides getSeekBackIncrement, seekBack, getSeekForwardIncrement and seekForward. The rewind and fast forward buttons can be disabled by using a ForwardingPlayer that removes COMMAND_SEEK_BACK and COMMAND_SEEK_FORWARD from the available commands.
  • Update DefaultControlDispatcher getRewindIncrementMs and getFastForwardIncrementMs to take the player as parameter.
• DASH:
  • Add support for multiple base URLs and DVB attributes in the manifest. Apps that are using DefaultLoadErrorHandlingPolicy with such manifests have base URL fallback automatically enabled (#771, #7654).
• HLS:
  • Fix issue that could cause some playbacks to be stuck buffering (#8850, #9153).
  • Report audio track type in AnalyticsListener.onDownstreamFormatChanged() for audio-only playlists, so that the PlaybackStatsListener can derive audio format-related information (#9175).
• RTSP:
  • Use standard RTSP header names (#9182).
  • Handle an extra semicolon in SDP fmtp attribute (#9247).
  • Fix handling of special characters in the RTSP session ID (#9254).
• SmoothStreaming:
  • Propagate StreamIndex element Name attribute value as Format label (#9252).
• Cronet extension:
  • Add CronetDataSource.Factory.setRequestPriority to allow setting the priority of requests made by CronetDataSource instances.
• OkHttp extension:
  • Switch to OkHttp 4.9.1. This increases the extension's minimum SDK version requirement from 16 to 21.
• Remove deprecated symbols:
  • Remove CastPlayer specific playlist manipulation methods. Use setMediaItems, addMediaItems, removeMediaItem and moveMediaItem instead.
  • Remove Format.create methods. Use Format.Builder instead.
  • Remove MediaSource.getTag. Use MediaSource.getMediaItem and MediaItem.PlaybackProperties.tag instead.
  • Remove PlaybackPreparer. UI components that previously had setPlaybackPreparer methods will now call Player.prepare by default. If this behavior is sufficient, use of PlaybackPreparer can be removed from application code without replacement. For custom preparation logic, use a ForwardingPlayer that implements custom preparation logic in prepare.
  • Remove Player.Listener.onTimelineChanged(Timeline, Object, int). Use Player.Listener.onTimelineChanged(Timeline, int) instead. The manifest can be accessed using Player.getCurrentManifest.
  • Remove Player.getCurrentTag. Use Player.getCurrentMediaItem and MediaItem.PlaybackProperties.tag instead.
  • Remove Player.getPlaybackError. Use Player.getPlayerError instead.
  • Remove PlayerNotificationManager constructors and createWith methods. Use PlayerNotificationManager.Builder instead.
  • Remove PlayerNotificationManager.setNotificationListener. Use PlayerNotificationManager.Builder.setNotificationListener instead.
  • Remove PlayerNotificationManager setUseNavigationActions and setUseNavigationActionsInCompactView. Use setUseNextAction, setUsePreviousAction, setUseNextActionInCompactView and setUsePreviousActionInCompactView instead.
  • Remove setRewindIncrementMs and setFastForwardIncrementMs from UI components. These increments can be customized by configuring the Player (see setSeekBackIncrementMs and setSeekForwardIncrementMs in SimpleExoPlayer.Builder), or by using a ForwardingPlayer that overrides getSeekBackIncrement, seekBack, getSeekForwardIncrement and seekForward. The rewind and fast forward buttons can be disabled by using a ForwardingPlayer that removes COMMAND_SEEK_BACK and COMMAND_SEEK_FORWARD from the available commands.
  • Remove Timeline.getWindow(int, Window, boolean). Use Timeline.getWindow(int, Window) instead, which will always set tags.

• Core Library:
  • Explicitly mark several methods on SimpleExoPlayer as @Deprecated. These methods are all overrides and are already deprecated on Player and the respective ExoPlayer component classes (since 2.14.0).
• Video:
  • Fix IncorrectContextUseViolation strict mode warning on Android 11 (#8246).
• Audio:
  • Fix track selection for E-AC-3 streams.
  • Use AudioTrack.isDirectPlaybackSupported to check for encoded audio passthrough capability from API 29 onwards, instead of using the HDMI audio plug intent (#6500).
• Extractors:
  • Fix issue where a trun atom could be associated with the wrong track in an FMP4 stream (#9056). The fix removes a previous workaround to handle content in which the track_ID is set incorrectly (#4083). Such content is malformed and should be re-encoded.
  • Improve support for truncated Ogg streams (#7608).
  • Add support for MP4 H263 atom type (#9158).
  • Fix issue around TS synchronization when reading a file's duration (#9100).
• HLS:
  • Fix issue where playback of a live event could become stuck rather than transitioning to STATE_ENDED when the event ends (#9067).
  • Fix issue where a new initialization segment, as specified by an EXT-X-MAP tag in a media playlist, would not be loaded when encountered during playback (#9004).
  • Forward the FRAME-RATE value from the master playlist to renditions (#8960).
  • Fix issue where HLS events would start at positions greater than specified by an EXT-X-START tag when placed in a playlist (#9037).
• Ad playback:
  • Use the content URI when auto-generating an ad ID (in addition to the media ID and ad tag URI) (#9106.
• DRM:
  • Allow repeated provisioning in DefaultDrmSession(Manager).
  • Fix a crash due to DefaultDrmSessionManager.release() incorrectly releasing too many keep-alive DefaultDrmSession references, resulting in DefaultDrmSession.release() throwing an IllegalStateException (#9193).
• Metadata:
  • Fix handling of emsg messages with an unset duration (#9123).
• UI:
  • Add PendingIntent.FLAG_IMMUTABLE flag when creating a broadcast intent in PlayerNotificationManager. This is required to avoid an error on Android 12.
  • Fix focusability of StyledPlayerView and StyledPlayerControlView popup menus on API levels prior to 26 (#9061).
  • Fix progress bar flickering immediately after the user seeks (#9049).
  • Fix StyledPlayerView and StyledPlayerControlView popup menu items not expanding to occupy the full width of the popup (#9086).
  • Don't propagate AttributeSet from SubtitleView constructor into CanvasSubtitleOutput. Just passing the Context is enough, and ensures programmatic changes to the SubtitleView will propagate down.
• RTSP:
  • Fix session description (SDP) parsing to use a HashMap-like behaviour for duplicated attributes (#9014).
  • Allow using absolute URI in the control attribute in a media description (#9183).
  • Allow the timeout to be customised via RtspMediaSource.Factory.setTimeoutMs.

• Core Library:
  • Fix gradle config to allow specifying a relative path for exoplayerRoot when depending on ExoPlayer locally
    (#8927).
  • Update MediaItem.Builder javadoc to discourage calling setters that will be (currently) ignored if another setter is not also called.
• Extractors:
  • Add support for MPEG-H 3D Audio in MP4 extractors (#8860).
• Video:
  • Fix bug that could cause CodecException: Error 0xffffffff to be thrown from MediaCodec.native_setSurface in use cases that involve both swapping the output Surface and a mixture of secure and non-secure content being played (#8776).
• HLS:
  • Use the PRECISE attribute in EXT-X-START to select the default start position.
  • Fix a bug where skipping into spliced-in chunks triggered an assertion error (#8937).
• DRM:
  • Keep secure MediaCodec instances initialized when disabling (but not resetting) MediaCodecRenderer. This helps re-use secure decoders in more contexts, which avoids the 'black flash' caused by detaching a Surface from a secure decoder on some devices (#8842). It will also result in DRM license refresh network requests while the player is stopped if Player#setForegroundMode is true.
  • Fix issue where offline keys were unnecessarily (and incorrectly) restored into a session before being released. This call sequence is explicitly disallowed in OEMCrypto v16.
• UI:
  • Keep subtitle language features embedded (e.g. rubies & tate-chu-yoko) in Cue.text even when SubtitleView#setApplyEmbeddedStyles() is false.
  • Fix NullPointerException in StyledPlayerView that could occur after calling StyledPlayerView.setPlayer(null) (#8985).
• RTSP:
  • Add support for RTSP basic and digest authentication (#8941).
  • Enable using repeat mode and playlist with RTSP (#8994).
  • Add RtspMediaSource.Factory option to set the RTSP user agent.
  • Add RtspMediaSource.Factory option to force using TCP for streaming.
• GL demo app:
  • Fix texture transformation to avoid green bars shown on some videos (#8992).

• Core Library:
  • Move Player components to ExoPlayer. For example Player.VideoComponent is now ExoPlayer.VideoComponent.
  • The most used methods of Player's audio, video, text and metadata components have been added directly to Player.
  • Add Player.getAvailableCommands, Player.isCommandAvailable and Listener.onAvailableCommandsChanged to query which commands that can be executed on the player.
  • Add a Player.Listener interface to receive all player events. Component listeners and EventListener have been deprecated.
  • Add Player.getMediaMetadata, which returns a combined and structured MediaMetadata object. Changes to metadata are reported to Listener.onMediaMetadataChanged.
  • Player.setPlaybackParameters no longer accepts null, use PlaybackParameters.DEFAULT instead.
  • Report information about the old and the new playback positions to Listener.onPositionDiscontinuity. Add DISCONTINUITY_REASON_SKIP and DISCONTINUITY_REASON_REMOVE as discontinuity reasons, and rename DISCONTINUITY_REASON_PERIOD_TRANSITION to DISCONTINUITY_REASON_AUTO_TRANSITION. Remove DISCONTINUITY_REASON_AD_INSERTION, for which DISCONTINUITY_REASON_AUTO_TRANSITION is used instead (#6163, #4768).
  • Deprecate ExoPlayer.Builder. Use SimpleExoPlayer.Builder instead.
  • Move Player.getRendererCount and Player.getRendererType to ExoPlayer.
  • Use an empty string instead of the URI if the media ID is not explicitly set with MediaItem.Builder.setMediaId(String).
  • Remove MediaCodecRenderer.configureCodec() and add MediaCodecRenderer.getMediaCodecConfiguration(). The new method is called just before the MediaCodec is created and returns the parameters needed to create and configure the MediaCodec instance. Applications can override MediaCodecRenderer.onCodecInitialized() to be notified after a MediaCodec is initialized, or they can inject a custom MediaCodecAdapter.Factory if they want to control how the MediaCodec is configured.
  • Promote AdaptiveTrackSelection.AdaptationCheckpoint to public visibility to allow Kotlin subclasses of AdaptiveTrackSelection.Factory (#8830).
  • Fix bug when transitions from content to ad periods called onMediaItemTransition by mistake.
  • AdsLoader.AdViewProvider and AdsLoader.OverlayInfo have been renamed com.google.android.exoplayer2.ui.AdViewProvider and com.google.android.exoplayer2.ui.AdOverlayInfo respectively.
  • CaptionStyleCompat has been moved to the com.google.android.exoplayer2.ui package.
  • DebugTextViewHelper has been moved from the ui package to the util package.
• RTSP:
  • Initial support for RTSP playbacks (#55).
• Downloads and caching:
  • Fix CacheWriter to correctly handle cases where the request DataSpec extends beyond the end of the underlying resource. Caching will now succeed in this case, with data up to the end of the resource being cached. This behaviour is enabled by default, and so the allowShortContent parameter has been removed (#7326).
  • Fix CacheWriter to correctly handle DataSource.close failures, for which it cannot be assumed that data was successfully written to the cache.
• DRM:
  • Prepare DRM sessions (and fetch keys) ahead of the playback position (#4133).
  • Only dispatch DRM session acquire and release events once per period when playing content that uses the same encryption keys for both audio & video tracks. Previously, separate acquire and release events were dispatched for each track in each period.
  • Include the session state in DRM session-acquired listener methods.
• UI:
  • Add PlayerNotificationManager.Builder, with the ability to specify which group the notification should belong to.
  • Remove setUseSensorRotation from PlayerView and StyledPlayerView. Instead, cast the view returned by getVideoSurfaceView to SphericalGLSurfaceView, and then call setUseSensorRotation on the SphericalGLSurfaceView directly.
• Analytics:
  • Add onAudioCodecError and onVideoCodecError to AnalyticsListener.
• Video:
  • Add Player.getVideoSize() to retrieve the current size of the video stream. Add Listener.onVideoSizeChanged(VideoSize) and deprecate Listener.onVideoSizeChanged(int, int, int, float).
• Audio:
  • Report unexpected audio discontinuities to AnalyticsListener.onAudioSinkError (#6384).
  • Allow forcing offload for gapless content even if gapless playback is not supported.
  • Allow fall back from DTS-HD to DTS when playing via passthrough.
• Text:
  • Fix overlapping lines when using SubtitleView.VIEW_TYPE_WEB.
  • Parse SSA/ASS underline & strikethrough info in Style: lines (#8435).
  • Ensure TTML tts:textAlign is correctly propagated from <p> nodes to child nodes.
  • Support TTML ebutts:multiRowAlign attributes.
• Allow the use of Android platform extractors through MediaParser:
  • Supported on API 30+:
  • You can use platform extractors for progressive media by passing MediaParserExtractorAdapter.FACTORY when creating a ProgressiveMediaSource.Factory.
  • You can use platform extractors for HLS by passing MediaParserHlsMediaChunkExtractor.FACTORY when creating a HlsMediaSource.Factory.
  • You can use platform extractors for DASH by passing a DefaultDashChunkSource that uses MediaParserChunkExtractor.FACTORY when creating a DashMediaSource.Factory.
• Cast extension:
  • Trigger onMediaItemTransition event for all reasons except MEDIA_ITEM_TRANSITION_REASON_REPEAT.
• MediaSession extension:
  • Remove dependency on exoplayer-core, relying only exoplayer-common instead. To achieve this, TimelineQueueEditor uses a new MediaDescriptionConverter interface, and no longer relies on ConcatenatingMediaSource.
• Remove deprecated symbols:
  • Remove ExoPlayerFactory. Use SimpleExoPlayer.Builder instead.
  • Remove Player.DefaultEventListener. Use Player.Listener instead.
  • Remove ExtractorMediaSource. Use ProgressiveMediaSource instead.
  • Remove DefaultMediaSourceEventListener. Use MediaSourceEventListener instead.
  • Remove DashManifest constructor. Use the remaining constructor with programInformation and serviceDescription set to null instead.
  • Remove CryptoInfo.getFrameworkCryptoInfoV16. Use CryptoInfo.getFrameworkCryptoInfo instead.
  • Remove NotificationUtil.createNotificationChannel(Context, String, int, int). Use createNotificationChannel(Context, String, int, int, int) instead.
  • Remove PlayerNotificationManager.setNotificationListener. Use PlayerNotificationManager.Builder.setNotificationListener instead.
  • Remove PlayerNotificationManager.NotificationListener onNotificationStarted(int, Notification) and onNotificationCancelled(int). Use onNotificationPosted(int, Notification, boolean) and onNotificationCancelled(int, boolean) instead.
  • Remove DownloadNotificationUtil. Use DownloadNotificationHelper instead.
  • Remove extension-jobdispatcher module. Use the extension-workmanager module instead.

• Published via the Google Maven repository (i.e., google()) rather than JCenter.
• Core:
  • Reset playback speed when live playback speed control becomes unused (#8664).
  • Fix playback position issue when re-preparing playback after a BehindLiveWindowException (#8675).
  • Assume Dolby Vision content is encoded as H264 when calculating maximum codec input size (#8705).
• UI:
  • Fix StyledPlayerView scrubber not reappearing correctly in some cases (#8646).
  • Fix measurement of StyledPlayerView and StyledPlayerControlView when wrap_content is used (#8726).
  • Fix StyledPlayerControlView to stay in full mode (rather than minimal mode) when possible (#8763).
• DASH:
  • Parse forced_subtitle role from DASH manifests (#8781).
• HLS:
  • Fix bug of ignoring EXT-X-START when setting the live target offset (#8764).
  • Fix incorrect application of byte ranges to EXT-X-MAP tags (#8783).
  • Fix issue that could cause playback to become stuck if corresponding EXT-X-DISCONTINUITY tags in different media playlists occur at different positions in time (#8372).
  • Fix issue that could cause playback of on-demand content to not start in cases where the media playlists referenced by the master playlist have different starting EXT-X-PROGRAM-DATE-TIME tags.
  • Fix container type detection for segments with incorrect file extension or HTTP Content-Type (#8733).
• Extractors:
  • Add support for GContainer and GContainerItem XMP namespace prefixes in JPEG motion photo parsing.
  • Allow JFIF APP0 marker segment preceding Exif APP1 segment in JpegExtractor.
• Text:
  • Parse SSA/ASS bold & italic info in Style: lines (#8435).
  • Don't display subtitles after the end position of the current media period (if known). This ensures sideloaded subtitles respect the end point of ClippingMediaPeriod and prevents content subtitles from continuing to be displayed over mid-roll ads (#5317, #8456).
  • Fix CEA-708 priority handling to sort cues in the order defined by the spec (#8704).
  • Support TTML textEmphasis attributes, used for Japanese boutens.
  • Support TTML shear attributes.
• Metadata:
  • Ensure that timed metadata near the end of a period is not dropped (#8710).
• Cast extension:
  • Fix onPositionDiscontinuity event so that it is not triggered with reason DISCONTINUITY_REASON_PERIOD_TRANSITION after a seek to another media item and so that it is not triggered after a timeline change.
• IMA extension:
  • Fix error caused by AdPlaybackState ad group times being cleared, which can occur if the ImaAdsLoader is released while an ad is pending loading (#8693).
  • Upgrade IMA SDK dependency to 3.23.0, fixing an issue with NullPointerExceptions within WebView callbacks (#8447).
• FFmpeg extension: Fix playback failure when switching to TrueHD tracks during playback (#8616).