RELEASENOTES.md

Release notes

2.11.7 (2020-06-29)

• IMA extension: Fix the way postroll "content complete" notifications are handled to avoid repeatedly refreshing the timeline after playback ends.

2.11.6 (2020-06-24)

• UI: Prevent PlayerView from temporarily hiding the video surface when seeking to an unprepared period within the current window. For example when seeking over an ad group, or to the next period in a multi-period DASH stream (#5507).
• IMA extension:
  • Add option to skip ads before the start position.
  • Catch unexpected errors in stopAd to avoid a crash (#7492).
  • Fix a bug that caused playback to be stuck buffering on resuming from the background after all ads had played to the end (#7508).
  • Fix a bug where the number of ads in an ad group couldn't change (#7477).
  • Work around unexpected pauseAd/stopAd for ads that have preloaded on seeking to another position (#7492).
  • Fix incorrect rounding of ad cue points.
  • Fix handling of postrolls preloading (#7518).

2.11.5 (2020-06-05)

• Improve the smoothness of video playback immediately after starting, seeking or resuming a playback (#6901).
• Add SilenceMediaSource.Factory to support tags.
• Enable the configuration of SilenceSkippingAudioProcessor (#6705).
• Fix bug where PlayerMessages throw an exception after MediaSources are removed from the playlist (#7278).
• Fix "Not allowed to start service" IllegalStateException in DownloadService (#7306).
• Fix issue in AudioTrackPositionTracker that could cause negative positions to be reported at the start of playback and immediately after seeking (#7456).
• Fix further cases where downloads would sometimes not resume after their network requirements are met (#7453).
• DASH:
  • Merge trick play adaptation sets (i.e., adaptation sets marked with http://dashif.org/guidelines/trickmode) into the same TrackGroup as the main adaptation sets to which they refer. Trick play tracks are marked with the C.ROLE_FLAG_TRICK_PLAY flag.
  • Fix assertion failure in SampleQueue when playing DASH streams with EMSG tracks (#7273).
• MP4: Store the Android capture frame rate only in Format.metadata. Format.frameRate now stores the calculated frame rate.
• FMP4: Avoid throwing an exception while parsing default sample values whose most significant bits are set (#7207).
• MP3: Fix issue parsing the XING headers belonging to files larger than 2GB (#7337).
• MPEG-TS: Fix issue where SEI NAL units were incorrectly dropped from H.265 samples (#7113).
• UI:
  • Fix DefaultTimeBar to respect touch transformations (#7303).
  • Add showScrubber and hideScrubber methods to DefaultTimeBar.
• Text:
  • Use anti-aliasing and bitmap filtering when displaying bitmap subtitles.
  • Fix SubtitlePainter to render EDGE_TYPE_OUTLINE using the correct color.
• IMA extension:
  • Upgrade to IMA SDK version 3.19.0, and migrate to new preloading APIs (#6429). This fixes several issues involving preloading and handling of ad loading error cases: (#4140, #5006, #6030, #6097, #6425, #6967, #7041, #7161, #7212, #7340).
  • Add support for timing out ad preloading, to avoid playback getting stuck if an ad group unexpectedly fails to load (#5444, #5966, #7002).
  • Fix AdsMediaSource child MediaSources not being released.
• Cronet extension: Default to using the Cronet implementation in Google Play Services rather than Cronet Embedded. This allows Cronet to be used with a negligible increase in application size, compared to approximately 8MB when embedding the library.
• OkHttp extension: Upgrade OkHttp dependency to 3.12.11.
• MediaSession extension:
  • Only set the playback state to BUFFERING if playWhenReady is true (#7206).
  • Add missing @Nullable annotations to MediaSessionConnector (#7234).
• AV1 extension: Add a heuristic to determine the default number of threads used for AV1 playback using the extension.

2.11.4 (2020-04-08)

• Add SimpleExoPlayer.setWakeMode to allow automatic WifiLock and WakeLock handling (#6914). To use this feature, you must add the WAKE_LOCK permission to your application's manifest file.
• Text:
  • Catch and log exceptions in TextRenderer rather than re-throwing. This allows playback to continue even if subtitle decoding fails (#6885).
  • Allow missing hours and milliseconds in SubRip (.srt) timecodes (#7122).
• Audio:
  • Enable playback speed adjustment and silence skipping for floating point PCM audio, via resampling to 16-bit integer PCM. To output the original floating point audio without adjustment, pass enableFloatOutput=true to the DefaultAudioSink constructor (#7134).
  • Workaround issue that could cause slower than realtime playback of AAC on Android 10 (#6671).
  • Fix case where another app spuriously holding transient audio focus could prevent ExoPlayer from acquiring audio focus for an indefinite period of time (#7182).
  • Fix case where the player volume could be permanently ducked if audio focus was released whilst ducking.
  • Fix playback of WAV files with trailing non-media bytes (#7129).
  • Fix playback of ADTS files with mid-stream ID3 metadata.
• DRM:
  • Fix stuck ad playbacks with DRM protected content (#7188).
  • Fix playback of Widevine protected content that only provides V1 PSSH atoms on API levels 21 and 22.
  • Fix playback of PlayReady content on Fire TV Stick (Gen 2).
• DASH:
  • Update the manifest URI to avoid repeated HTTP redirects (#6907).
  • Parse period AssetIdentifier elements.
• HLS: Recognize IMSC subtitles (#7185).
• UI: Add an option to set whether to use the orientation sensor for rotation in spherical playbacks (#6761).
• Analytics: Fix PlaybackStatsListener behavior when not keeping history (#7160).
• FFmpeg extension: Add support for x86_64 architecture.
• Opus extension: Fix parsing of negative gain values (#7046).
• Cast extension: Upgrade play-services-cast-framework dependency to 18.1.0. This fixes an issue where RemoteServiceException was thrown due to Context.startForegroundService() not calling Service.startForeground() (#7191).

2.11.3 (2020-02-19)

• SmoothStreaming: Fix regression that broke playback in 2.11.2 (#6981).
• DRM: Fix issue switching from protected content that uses a 16-byte initialization vector to one that uses an 8-byte initialization vector (#6982).

2.11.2 (2020-02-13)

• Add Java FLAC extractor (#6406).
• Startup latency optimization:
  • Reduce startup latency for DASH and SmoothStreaming playbacks by allowing codec initialization to occur before the network connection for the first media segment has been established.
  • Reduce startup latency for on-demand DASH playbacks by allowing codec initialization to occur before the sidx box has been loaded.
• Downloads:
  • Fix download resumption when the requirements for them to continue are met (#6733, #6798).
  • Fix DownloadHelper.createMediaSource to use customCacheKey when creating ProgressiveMediaSource instances.
• DRM: Fix NullPointerException when playing DRM-protected content (#6951).
• Metadata:
  • Update IcyDecoder to try ISO-8859-1 decoding if UTF-8 decoding fails. Also change IcyInfo.rawMetadata from String to byte[] to allow developers to handle data that's neither UTF-8 nor ISO-8859-1 (#6753).
  • Select multiple metadata tracks if multiple metadata renderers are available (#6676).
  • Add support for ID3 genres added in Wimamp 5.6 (2010).
• UI:
  • Show ad group markers in DefaultTimeBar even if they are after the end of the current window (#6552).
  • Don't use notification chronometer if playback speed is != 1.0 (#6816).
• HLS: Fix playback of DRM protected content that uses key rotation (#6903).
• WAV:
  • Support IMA ADPCM encoded data.
  • Improve support for G.711 A-law and mu-law encoded data.
• MP4: Support "twos" codec (big endian PCM) (#5789).
• FMP4: Add support for encrypted AC-4 tracks.
• HLS: Fix slow seeking into long MP3 segments (#6155).
• Fix handling of E-AC-3 streams that contain AC-3 syncframes (#6602).
• Fix playback of TrueHD streams in Matroska (#6845).
• Fix MKV subtitles to disappear when intended instead of lasting until the next cue (#6833).
• OkHttp extension: Upgrade OkHttp dependency to 3.12.8, which fixes a class of SocketTimeoutException issues when using HTTP/2 (#4078).
• FLAC extension: Fix handling of bit depths other than 16 in FLACDecoder. This issue caused FLAC streams with other bit depths to sound like white noise on earlier releases, but only when embedded in a non-FLAC container such as Matroska or MP4.
• Demo apps: Add GL demo app to show how to render video to a GLSurfaceView while applying a GL shader. (#6920).

2.11.1 (2019-12-20)

• UI: Exclude DefaultTimeBar region from system gesture detection (#6685).
• ProGuard fixes:
  • Ensure Libgav1VideoRenderer constructor is kept for use by DefaultRenderersFactory (#6773).
  • Ensure VideoDecoderOutputBuffer and its members are kept for use by video decoder extensions.
  • Ensure raw resources used with RawResourceDataSource are kept.
  • Suppress spurious warnings about the javax.annotation package, and restructure use of IntDef annotations to remove spurious warnings about SsaStyle$SsaAlignment (#6771).
• Fix CacheDataSource to correctly propagate DataSpec.httpRequestHeaders.
• Fix issue with DefaultDownloadIndex that could result in an IllegalStateException being thrown from DefaultDownloadIndex.getDownloadForCurrentRow (#6785).
• Fix IndexOutOfBoundsException in SinglePeriodTimeline.getWindow (#6776).
• Add missing @Nullable to MediaCodecAudioRenderer.getMediaClock and SimpleDecoderAudioRenderer.getMediaClock (#6792).

2.11.0 (2019-12-11)

• Core library:
  • Replace ExoPlayerFactory by SimpleExoPlayer.Builder and ExoPlayer.Builder.
  • Add automatic WakeLock handling to SimpleExoPlayer, which can be enabled by calling SimpleExoPlayer.setHandleWakeLock (#5846). To use this feature, you must add the WAKE_LOCK permission to your application's manifest file.
  • Add automatic "audio becoming noisy" handling to SimpleExoPlayer, which can be enabled by calling SimpleExoPlayer.setHandleAudioBecomingNoisy.
  • Wrap decoder exceptions in a new DecoderException class and report them as renderer errors.
  • Add Timeline.Window.isLive to indicate that a window is a live stream (#2668 and #5973).
  • Add Timeline.Window.uid to uniquely identify window instances.
  • Deprecate setTag parameter of Timeline.getWindow. Tags will always be set.
  • Deprecate passing the manifest directly to Player.EventListener.onTimelineChanged. It can be accessed through Timeline.Window.manifest or Player.getCurrentManifest()
  • Add MediaSource.enable and MediaSource.disable to improve resource management in playlists.
  • Add MediaPeriod.isLoading to improve Player.isLoading state.
  • Fix issue where player errors are thrown too early at playlist transitions (#5407).
  • Add Format and renderer support flags to renderer ExoPlaybackExceptions.
  • Where there are multiple platform decoders for a given MIME type, prefer to use one that advertises support for the profile and level of the media being played over one that does not, even if it does not come first in the MediaCodecList.
• DRM:
  • Inject DrmSessionManager into the MediaSources instead of Renderers. This allows each MediaSource in a ConcatenatingMediaSource to use a different DrmSessionManager (#5619).
  • Add DefaultDrmSessionManager.Builder, and remove DefaultDrmSessionManager static factory methods that leaked ExoMediaDrm instances (#4721).
  • Add support for the use of secure decoders when playing clear content (#4867). This can be enabled using DefaultDrmSessionManager.Builder's setUseDrmSessionsForClearContent method.
  • Add support for custom LoadErrorHandlingPolicies in key and provisioning requests (#6334). Custom policies can be passed via DefaultDrmSessionManager.Builder's setLoadErrorHandlingPolicy method.
  • Use ExoMediaDrm.Provider in OfflineLicenseHelper to avoid leaking ExoMediaDrm instances (#4721).
• Track selection:
  • Update DefaultTrackSelector to set a viewport constraint for the default display by default.
  • Update DefaultTrackSelector to set text language and role flag constraints for the device's accessibility settings by default (#5749).
  • Add option to set preferred text role flags using DefaultTrackSelector.ParametersBuilder.setPreferredTextRoleFlags.
• Android 10:
  • Set compileSdkVersion to 29 to enable use of Android 10 APIs.
  • Expose new isHardwareAccelerated, isSoftwareOnly and isVendor flags in MediaCodecInfo (#5839).
  • Add allowedCapturePolicy field to AudioAttributes to allow to configuration of the audio capture policy.
• Video:
  • Pass the codec output MediaFormat to VideoFrameMetadataListener.
  • Fix byte order of HDR10+ static metadata to match CTA-861.3.
  • Support out-of-band HDR10+ dynamic metadata for VP9 in WebM/Matroska.
  • Assume that protected content requires a secure decoder when evaluating whether MediaCodecVideoRenderer supports a given video format (#5568).
  • Fix Dolby Vision fallback to AVC and HEVC.
  • Fix early end-of-stream detection when using video tunneling, on API level 23 and above.
  • Fix an issue where a keyframe was rendered rather than skipped when performing an exact seek to a non-zero position close to the start of the stream.
• Audio:
  • Fix the start of audio getting truncated when transitioning to a new item in a playlist of Opus streams.
  • Workaround broken raw audio decoding on Oppo R9 (#5782).
  • Reconfigure audio sink when PCM encoding changes (#6601).
  • Allow AdtsExtractor to encounter EOF when calculating average frame size (#6700).
• Text:
  • Add support for position and overlapping start/end times in SSA/ASS subtitles (#6320).
  • Require an end time or duration for SubRip (SRT) and SubStation Alpha (SSA/ASS) subtitles. This applies to both sidecar files & subtitles embedded in Matroska streams.
• UI:
  • Make showing and hiding player controls accessible to TalkBack in PlayerView.
  • Rename spherical_view surface type to spherical_gl_surface_view.
  • Make it easier to override the shuffle, repeat, fullscreen, VR and small notification icon assets (#6709).
• Analytics:
  • Remove AnalyticsCollector.Factory. Instances should be created directly, and the Player should be set by calling AnalyticsCollector.setPlayer.
  • Add PlaybackStatsListener to collect PlaybackStats for analysis and analytics reporting.
• DataSource
  • Add DataSpec.httpRequestHeaders to support setting per-request headers for HTTP and HTTPS.
  • Remove the DataSpec.FLAG_ALLOW_ICY_METADATA flag. Use is replaced by setting the IcyHeaders.REQUEST_HEADER_ENABLE_METADATA_NAME header in DataSpec.httpRequestHeaders.
  • Fail more explicitly when local file URIs contain invalid parts (e.g. a fragment) (#6470).
• DASH: Support negative @r values in segment timelines (#1787).
• HLS:
  • Use peak bitrate rather than average bitrate for adaptive track selection.
  • Fix issue where streams could get stuck in an infinite buffering state after a postroll ad (#6314).
• Matroska: Support lacing in Blocks (#3026).
• AV1 extension:
  • New in this release. The AV1 extension allows use of the libgav1 software decoder in ExoPlayer. You can read more about playing AV1 videos with ExoPlayer here.
• VP9 extension:
  • Update to use NDK r20.
  • Rename VpxVideoSurfaceView to VideoDecoderSurfaceView and move it to the core library.
  • Move LibvpxVideoRenderer.MSG_SET_OUTPUT_BUFFER_RENDERER to C.MSG_SET_OUTPUT_BUFFER_RENDERER.
  • Use VideoDecoderRenderer as an implementation of VideoDecoderOutputBufferRenderer, instead of VideoDecoderSurfaceView.
• FLAC extension: Update to use NDK r20.
• Opus extension: Update to use NDK r20.
• FFmpeg extension:
  • Update to use NDK r20.
  • Update to use FFmpeg version 4.2. It is necessary to rebuild the native part of the extension after this change, following the instructions in the extension's readme.
• MediaSession extension: Add MediaSessionConnector.setCaptionCallback to support ACTION_SET_CAPTIONING_ENABLED events.
• GVR extension: This extension is now deprecated.
• Demo apps:
  • Add SurfaceControl demo app to show how to use the Android 10 SurfaceControl API with ExoPlayer (#677).
  • Add support for subtitle files to the Main demo app (#5523).
  • Remove the IMA demo app. IMA functionality is demonstrated by the main demo app.
  • Add basic DRM support to the Cast demo app.
• TestUtils: Publish the testutils module to simplify unit testing with ExoPlayer (#6267).
• IMA extension: Remove AdsManager listeners on release to avoid leaking an AdEventListener provided by the app (#6687).

2.10.8 (2019-11-19)

• E-AC3 JOC
  • Handle new signaling in DASH manifests (#6636).
  • Fix E-AC3 JOC passthrough playback failing to initialize due to incorrect channel count check.
• FLAC
  • Fix sniffing for some FLAC streams.
  • Fix FLAC Format.bitrate values.
• Parse ALAC channel count and sample rate information from a more robust source when contained in MP4 (#6648).
• Fix seeking into multi-period content in the edge case that the period containing the seek position has just been removed (#6641).

2.10.7 (2019-11-06)

• HLS: Fix detection of Dolby Atmos to match the HLS authoring specification.
• MediaSession extension: Update shuffle and repeat modes when playback state is invalidated (#6582).
• Fix the start of audio getting truncated when transitioning to a new item in a playlist of Opus streams.

2.10.6 (2019-10-17)

• Add Player.onPlaybackSuppressionReasonChanged to allow listeners to detect playbacks suppressions (e.g. transient audio focus loss) directly (#6203).
• DASH:
  • Support Label elements (#6297).
  • Support legacy audio channel configuration (#6523).
• HLS: Add support for ID3 in EMSG when using FMP4 streams (spec).
• MP3: Add workaround to avoid prematurely ending playback of some SHOUTcast live streams (#6537, #6315 and #5658).
• Metadata: Expose the raw ICY metadata through IcyInfo (#6476).
• UI:
  • Setting app:played_color on PlayerView and PlayerControlView no longer adjusts the colors of the scrubber handle , buffered and unplayed parts of the time bar. These can be set separately using app:scrubber_color, app:buffered_color and app_unplayed_color respectively.
  • Setting app:ad_marker_color on PlayerView and PlayerControlView no longer adjusts the color of played ad markers. The color of played ad markers can be set separately using app:played_ad_marker_color.

2.10.5 (2019-09-20)

• Add Player.isPlaying and EventListener.onIsPlayingChanged to check whether the playback position is advancing. This helps to determine if playback is suppressed due to audio focus loss. Also add Player.getPlaybackSuppressedReason to determine the reason of the suppression (#6203).
• Track selection
  • Add allowAudioMixedChannelCountAdaptiveness parameter to DefaultTrackSelector to allow adaptive selections of audio tracks with different channel counts.
  • Improve text selection logic to always prefer the better language matches over other selection parameters.
  • Fix audio selection issue where languages are compared by bitrate (#6335).
• Performance
  • Increase maximum video buffer size from 13MB to 32MB. The previous default was too small for high quality streams.
  • Reset DefaultBandwidthMeter to initial values on network change.
  • Bypass sniffing in ProgressiveMediaPeriod in case a single extractor is provided (#6325).
• Metadata
  • Support EMSG V1 boxes in FMP4.
  • Support unwrapping of nested metadata (e.g. ID3 and SCTE-35 in EMSG).
• Add HttpDataSource.getResponseCode to provide the status code associated with the most recent HTTP response.
• Fix transitions between packed audio and non-packed audio segments in HLS (#6444).
• Fix issue where a request would be retried after encountering an error, even though the LoadErrorHandlingPolicy classified the error as fatal.
• Fix initialization data handling for FLAC in MP4 (#6396, #6397).
• Fix decoder selection for E-AC3 JOC streams (#6398).
• Fix PlayerNotificationManager to show play icon rather than pause icon when playback is ended (#6324).
• RTMP extension: Upgrade LibRtmp-Client-for-Android to fix RTMP playback issues (#4200, #4249, #4319, #4337).
• IMA extension: Fix crash in ImaAdsLoader.onTimelineChanged (#5831).

2.10.4 (2019-07-26)

• Offline: Add Scheduler implementation that uses WorkManager.
• Add ability to specify a description when creating notification channels via ExoPlayer library classes.
• Switch normalized BCP-47 language codes to use 2-letter ISO 639-1 language tags instead of 3-letter ISO 639-2 language tags.
• Ensure the SilenceMediaSource position is in range (#6229).
• WAV: Calculate correct duration for clipped streams (#6241).
• MP3: Use CBR header bitrate, not calculated bitrate. This reverts a change from 2.9.3 (#6238).
• FLAC extension: Parse VORBIS_COMMENT and PICTURE metadata (#5527).
• Fix issue where initial seek positions get ignored when playing a preroll ad (#6201).
• Fix issue where invalid language tags were normalized to "und" instead of keeping the original (#6153).
• Fix DataSchemeDataSource re-opening and range requests (#6192).
• Fix FLAC and ALAC playback on some LG devices (#5938).
• Fix issue when calling performClick on PlayerView without PlayerControlView (#6260).
• Fix issue where playback speeds are not used in adaptive track selections after manual selection changes for other renderers (#6256).

2.10.3 (2019-07-09)

• Display last frame when seeking to end of stream (#2568).
• Audio:
  • Fix an issue where not all audio was played out when the configuration for the underlying track was changing (e.g., at some period transitions).
  • Fix an issue where playback speed was applied inaccurately in playlists (#6117).
• UI: Fix PlayerView incorrectly consuming touch events if no controller is attached (#6109).
• CEA608: Fix repetition of special North American characters (#6133).
• FLV: Fix bug that caused playback of some live streams to not start (#6111).
• SmoothStreaming: Parse text stream Subtype into Format.roleFlags.
• MediaSession extension: Fix MediaSessionConnector.play() not resuming playback (#6093).

2.10.2 (2019-06-03)

• Add ResolvingDataSource for just-in-time resolution of DataSpecs (#5779).
• Add SilenceMediaSource that can be used to play silence of a given duration (#5735).
• Offline:
  • Prevent unexpected DownloadHelper.Callback.onPrepared callbacks after preparation of a DownloadHelper fails (#5915).
  • Fix CacheUtil.cache() downloading too much data (#5927).
  • Fix misreporting cached bytes when caching is paused (#5573).
• UI:
  • Allow setting DefaultTimeBar attributes on PlayerView and PlayerControlView.
  • Change playback controls toggle from touch down to touch up events (#5784).
  • Fix issue where playback controls were not kept visible on key presses (#5963).
• Subtitles:
  • CEA-608: Handle XDS and TEXT modes (#5807).
  • TTML: Fix bitmap rendering (#5633).
• IMA: Fix ad pod index offset calculation without preroll (#5928).
• Add a playWhenReady flag to MediaSessionConnector.PlaybackPreparer methods to indicate whether a controller sent a play or only a prepare command. This allows to take advantage of decoder reuse with the MediaSessionConnector (#5891).
• Add ProgressUpdateListener to PlayerControlView (#5834).
• Add support for auto-detecting UDP streams in DefaultDataSource (#6036).
• Allow enabling decoder fallback with DefaultRenderersFactory (#5942).
• Gracefully handle revoked ACCESS_NETWORK_STATE permission (#6019).
• Fix decoding problems when seeking back after seeking beyond a mid-roll ad (#6009).
• Fix application of maxAudioBitrate for adaptive audio track groups (#6006).
• Fix bug caused by parallel adaptive track selection using Formats without bitrate information (#5971).
• Fix bug in CastPlayer.getCurrentWindowIndex() (#5955).

2.10.1 (2019-05-16)

• Offline: Add option to remove all downloads.
• HLS: Fix NullPointerException when using HLS chunkless preparation (#5868).
• Fix handling of empty values and line terminators in SHOUTcast ICY metadata (#5876).
• Fix DVB subtitles for SDK 28 (#5862).
• Add a workaround for a decoder failure on ZTE Axon7 mini devices when playing 48kHz audio (#5821).

2.10.0 (2019-04-15)

• Core library:
  • Improve decoder re-use between playbacks (#2826). Read this blog post for more details.
  • Rename ExtractorMediaSource to ProgressiveMediaSource.
  • Fix issue where using ProgressiveMediaSource.Factory would mean that DefaultExtractorsFactory would be kept by proguard. Custom ExtractorsFactory instances must now be passed via the ProgressiveMediaSource.Factory constructor, and setExtractorsFactory is deprecated.
  • Make the default minimum buffer size equal the maximum buffer size for video playbacks (#2083).
  • Move PriorityTaskManager from DefaultLoadControl to SimpleExoPlayer.
  • Add new ExoPlaybackException types for remote exceptions and out-of-memory errors.
  • Use full BCP 47 language tags in Format.
  • Do not retry failed loads whose error is FileNotFoundException.
  • Fix issue where not resetting the position for a new MediaSource in calls to ExoPlayer.prepare causes an IndexOutOfBoundsException (#5520).
• Offline:
  • Improve offline support. DownloadManager now tracks all offline content, not just tasks in progress. Read this page for more details.
• Caching:
  • Improve performance of SimpleCache (#4253).
  • Cache data with unknown length by default. The previous flag to opt in to this behavior (DataSpec.FLAG_ALLOW_CACHING_UNKNOWN_LENGTH) has been replaced with an opt out flag (DataSpec.FLAG_DONT_CACHE_IF_LENGTH_UNKNOWN).
• Extractors:
  • MP4/FMP4: Add support for Dolby Vision.
  • MP4: Fix issue handling meta atoms in some streams (#5698, #5694).
  • MP3: Add support for SHOUTcast ICY metadata (#3735).
  • MP3: Fix ID3 frame unsychronization (#5673).
  • MP3: Fix playback of badly clipped files (#5772).
  • MPEG-TS: Enable HDMV DTS stream detection only if a flag is set. By default (i.e. if the flag is not set), the 0x82 elementary stream type is now treated as an SCTE subtitle track (#5330).
• Track selection:
  • Add options for controlling audio track selections to DefaultTrackSelector (#3314).
  • Update TrackSelection.Factory interface to support creating all track selections together.
  • Allow to specify a selection reason for a SelectionOverride.
  • Select audio track based on system language if no preference is provided.
  • When no text language preference matches, only select forced text tracks whose language matches the selected audio language.
• UI:
  • Update DefaultTimeBar based on duration of media and add parameter to set the minimum update interval to control the smoothness of the updates (#5040).
  • Move creation of dialogs for TrackSelectionViews to TrackSelectionDialogBuilder and add option to select multiple overrides.
  • Change signature of PlayerNotificationManager.NotificationListener to better fit service requirements.
  • Add option to include navigation actions in the compact mode of notifications created using PlayerNotificationManager.
  • Fix issues with flickering notifications on KitKat when using PlayerNotificationManager and DownloadNotificationUtil. For the latter, applications should switch to using DownloadNotificationHelper.
  • Fix accuracy of D-pad seeking in DefaultTimeBar (#5767).
• Audio:
  • Allow AudioProcessors to be drained of pending output after they are reconfigured.
  • Fix an issue that caused audio to be truncated at the end of a period when switching to a new period where gapless playback information was newly present or newly absent.
  • Add support for reading AC-4 streams (#5303).
• Video:
  • Remove MediaCodecSelector.DEFAULT_WITH_FALLBACK. Apps should instead signal that fallback should be used by passing true as the enableDecoderFallback parameter when instantiating the video renderer.
  • Support video tunneling when the decoder is not listed first for the MIME type (#3100).
  • Query MediaCodecList.ALL_CODECS when selecting a tunneling decoder (#5547).
• DRM:
  • Fix black flicker when keys rotate in DRM protected content (#3561).
  • Work around lack of LA_URL attribute in PlayReady key request init data.
• CEA-608: Improved conformance to the specification (#3860).
• DASH:
  • Parse role and accessibility descriptors into Format.roleFlags.
  • Support multiple CEA-608 channels muxed into FMP4 representations (#5656).
• HLS:
  • Prevent unnecessary reloads of initialization segments.
  • Form an adaptive track group out of audio renditions with matching name.
  • Support encrypted initialization segments (#5441).
  • Parse EXT-X-MEDIA CHARACTERISTICS attribute into Format.roleFlags.
  • Add metadata entry for HLS tracks to expose master playlist information.
  • Prevent IndexOutOfBoundsException in some live HLS scenarios (#5816).
• Support for playing spherical videos on Daydream.
• Cast extension: Work around Cast framework returning a limited-size queue items list (#4964).
• VP9 extension: Remove RGB output mode and libyuv dependency, and switch to surface YUV output as the default. Remove constructor parameters scaleToFit and useSurfaceYuvOutput.
• MediaSession extension:
  • Let apps intercept media button events (#5179).
  • Fix issue with TimelineQueueNavigator not publishing the queue in shuffled order when in shuffle mode.
  • Allow handling of custom commands via registerCustomCommandReceiver.
  • Add ability to include an extras Bundle when reporting a custom error.
• Log warnings when extension native libraries can't be used, to help with diagnosing playback failures (#5788).

2.9.6 (2019-02-19)

• Remove player and isTopLevelSource parameters from MediaSource.prepare.
• IMA extension:
  • Require setting the Player on AdsLoader instances before playback.
  • Remove deprecated ImaAdsMediaSource. Create AdsMediaSource with an ImaAdsLoader instead.
  • Remove deprecated AdsMediaSource constructors. Listen for media source events using AdsMediaSource.addEventListener, and ad interaction events by adding a listener when building ImaAdsLoader.
  • Allow apps to register playback-related obstructing views that are on top of their ad display containers via AdsLoader.AdViewProvider. PlayerView implements this interface and will register its control view. This makes it possible for ad loading SDKs to calculate ad viewability accurately.
• DASH: Fix issue handling large EventStream presentation timestamps (#5490).
• HLS: Fix transition to STATE_ENDED when playing fragmented mp4 in chunkless preparation (#5524).
• Revert workaround for video quality problems with Amlogic decoders, as this may cause problems for some devices and/or non-interlaced content (#5003).

2.9.5 (2019-01-31)

• HLS: Parse CHANNELS attribute from EXT-X-MEDIA tag.
• ConcatenatingMediaSource:
  • Add Handler parameter to methods that take a callback Runnable.
  • Fix issue with dropped messages when releasing the source (#5464).
• ExtractorMediaSource: Fix issue that could cause the player to get stuck buffering at the end of the media.
• PlayerView: Fix issue preventing OnClickListener from receiving events (#5433).
• IMA extension: Upgrade IMA dependency to 3.10.6.
• Cronet extension: Upgrade Cronet dependency to 71.3578.98.
• OkHttp extension: Upgrade OkHttp dependency to 3.12.1.
• MP3: Wider fix for issue where streams would play twice on some Samsung devices (#4519).

2.9.4 (2019-01-15)

• IMA extension: Clear ads loader listeners on release (#4114).
• SmoothStreaming: Fix support for subtitles in DRM protected streams (#5378).
• FFmpeg extension: Treat invalid data errors as non-fatal to match the behavior of MediaCodec (#5293).
• GVR extension: upgrade GVR SDK dependency to 1.190.0.
• Associate fatal player errors of type SOURCE with the loading source in AnalyticsListener.EventTime (#5407).
• Add startPositionUs to MediaSource.createPeriod. This fixes an issue where using lazy preparation in ConcatenatingMediaSource with an ExtractorMediaSource overrides initial seek positions (#5350).
• Add subtext to the MediaDescriptionAdapter of the PlayerNotificationManager.
• Add workaround for video quality problems with Amlogic decoders (#5003).
• Fix issue where sending callbacks for playlist changes may cause problems because of parallel player access (#5240).
• Fix issue with reusing a ClippingMediaSource with an inner ExtractorMediaSource and a non-zero start position (#5351).
• Fix issue where uneven track durations in MP4 streams can cause OOM problems (#3670).

2.9.3 (2018-12-20)

• Captions: Support PNG subtitles in SMPTE-TT (#1583).
• MPEG-TS: Use random access indicators to minimize the need for FLAG_ALLOW_NON_IDR_KEYFRAMES.
• Downloading: Reduce time taken to remove downloads (#5136).
• MP3:
  • Use the true bitrate for constant-bitrate MP3 seeking.
  • Fix issue where streams would play twice on some Samsung devices (#4519).
• Fix regression where some audio formats were incorrectly marked as being unplayable due to under-reporting of platform decoder capabilities (#5145).
• Fix decode-only frame skipping on Nvidia Shield TV devices.
• Workaround for MiTV (dangal) issue when swapping output surface (#5169).

2.9.2 (2018-11-28)

• HLS:
  • Fix issue causing unnecessary media playlist requests when playing live streams (#5059).
  • Fix decoder re-instantiation issue for packed audio streams (#5063).
• MP4: Support Opus and FLAC in the MP4 container, and in DASH (#4883).
• DASH: Fix detecting the end of live events (#4780).
• Spherical video: Fall back to TYPE_ROTATION_VECTOR if TYPE_GAME_ROTATION_VECTOR is unavailable (#5119).
• Support seeking for a wider range of MPEG-TS streams (#5097).
• Include channel count in audio capabilities check (#4690).
• Fix issue with applying the show_buffering attribute in PlayerView (#5139).
• Fix issue where null Metadata was output when it failed to decode (#5149).
• Fix playback of some invalid but playable MP4 streams by replacing assertions with logged warnings in sample table parsing code (#5162).
• Fix UUID passed to MediaCrypto when using C.CLEARKEY_UUID before API 27.

2.9.1 (2018-11-01)

• Add convenience methods Player.next, Player.previous, Player.hasNext and Player.hasPrevious (#4863).
• Improve initial bandwidth meter estimates using the current country and network type.
• IMA extension:
  • For preroll to live stream transitions, project forward the loading position to avoid being behind the live window.
  • Let apps specify whether to focus the skip button on ATV (#5019).
• MP3:
  • Support seeking based on MLLT metadata (#3241).
  • Fix handling of streams with appended data (#4954).
• DASH: Parse ProgramInformation element if present in the manifest.
• HLS:
  • Add constructor to DefaultHlsExtractorFactory for adding TS payload reader factory flags (#4861).
  • Fix bug in segment sniffing (#5039).
• SubRip: Add support for alignment tags, and remove tags from the displayed captions (#4306).
• Fix issue with blind seeking to windows with non-zero offset in a ConcatenatingMediaSource (#4873).
• Fix logic for enabling next and previous actions in TimelineQueueNavigator (#5065).
• Fix issue where audio focus handling could not be disabled after enabling it (#5055).
• Fix issue where subtitles were positioned incorrectly if SubtitleView had a non-zero position offset to its parent (#4788).
• Fix issue where the buffered position was not updated correctly when transitioning between periods (#4899).
• Fix issue where a NullPointerException is thrown when removing an unprepared media source from a ConcatenatingMediaSource with the useLazyPreparation option enabled (#4986).
• Work around an issue where a non-empty end-of-stream audio buffer would be output with timestamp zero, causing the player position to jump backwards (#5045).
• Suppress a spurious assertion failure on some Samsung devices (#4532).
• Suppress spurious "references unknown class member" shrinking warning (#4890).
• Swap recommended order for google() and jcenter() in gradle config (#4997).

2.9.0 (2018-09-06)

• Turn on Java 8 compiler support for the ExoPlayer library. Apps may need to add compileOptions { targetCompatibility JavaVersion.VERSION_1_8 } to their gradle settings to ensure bytecode compatibility.
• Set compileSdkVersion and targetSdkVersion to 28.
• Support for automatic audio focus handling via SimpleExoPlayer.setAudioAttributes.
• Add ExoPlayer.retry convenience method.
• Add AudioListener for listening to changes in audio configuration during playback (#3994).
• Add LoadErrorHandlingPolicy to allow configuration of load error handling across MediaSource implementations (#3370).
• Allow passing a Looper, which specifies the thread that must be used to access the player, when instantiating player instances using ExoPlayerFactory (#4278).
• Allow setting log level for ExoPlayer logcat output (#4665).
• Simplify BandwidthMeter injection: The BandwidthMeter should now be passed directly to ExoPlayerFactory, instead of to TrackSelection.Factory and DataSource.Factory. The BandwidthMeter is passed to the components that need it internally. The BandwidthMeter may also be omitted, in which case a default instance will be used.
• Spherical video:
  • Support for spherical video by setting surface_type="spherical_view" on PlayerView.
  • Support for VR180.
• HLS:
  • Support PlayReady.
  • Add container format sniffing (#2025).
  • Support alternative EXT-X-KEY tags.
  • Support EXT-X-INDEPENDENT-SEGMENTS in the master playlist.
  • Support variable substitution (#4422).
  • Fix the bitrate being unset on primary track sample formats (#3297).
  • Make HlsMediaSource.Factory take a factory of trackers instead of a tracker instance (#4814).
• DASH:
  • Support messageData attribute for in-manifest event streams.
  • Clip periods to their specified durations (#4185).
• Improve seeking support for progressive streams:
  • Support seeking in MPEG-TS (#966).
  • Support seeking in MPEG-PS (#4476).
  • Support approximate seeking in ADTS using a constant bitrate assumption (#4548). The FLAG_ENABLE_CONSTANT_BITRATE_SEEKING flag must be set on the extractor to enable this functionality.
  • Support approximate seeking in AMR using a constant bitrate assumption. The FLAG_ENABLE_CONSTANT_BITRATE_SEEKING flag must be set on the extractor to enable this functionality.
  • Add DefaultExtractorsFactory.setConstantBitrateSeekingEnabled to enable approximate seeking using a constant bitrate assumption on all extractors that support it.
• Video:
  • Add callback to VideoListener to notify of surface size changes.
  • Improve performance when playing high frame-rate content, and when playing at greater than 1x speed (#2777).
  • Scale up the initial video decoder maximum input size so playlist transitions with small increases in maximum sample size do not require reinitialization (#4510).
  • Fix a bug where the player would not transition to the ended state when playing video in tunneled mode.
• Audio:
  • Support attaching auxiliary audio effects to the AudioTrack via Player.setAuxEffectInfo and Player.clearAuxEffectInfo.
  • Support seamless adaptation while playing xHE-AAC streams. (#4360).
  • Increase AudioTrack buffer sizes to the theoretical maximum required for each encoding for passthrough playbacks (#3803).
  • WAV: Fix issue where white noise would be output at the end of playback (#4724).
  • MP3: Fix issue where streams would play twice on the SM-T530 (#4519).
• Analytics:
  • Add callbacks to DefaultDrmSessionEventListener and AnalyticsListener to be notified of acquired and released DRM sessions.
  • Add uri field to LoadEventInfo in MediaSourceEventListener and AnalyticsListener callbacks. This uri is the redirected uri if redirection occurred (#2054).
  • Add response headers field to LoadEventInfo in MediaSourceEventListener and AnalyticsListener callbacks (#4361 and #4615).
• UI:
  • Add option to PlayerView to show buffering view when playWhenReady is false (#4304).
  • Allow any Drawable to be used as PlayerView default artwork.
• ConcatenatingMediaSource:
  • Support lazy preparation of playlist media sources (#3972).
  • Support range removal with removeMediaSourceRange methods (#4542).
  • Support setting a new shuffle order with setShuffleOrder (#4791).
• MPEG-TS: Support CEA-608/708 in H262 (#2565).
• Allow configuration of the back buffer in DefaultLoadControl.Builder (#4857).
• Allow apps to pass a CacheKeyFactory for setting custom cache keys when creating a CacheDataSource.
• Provide additional information for adaptive track selection. TrackSelection.updateSelectedTrack has two new parameters for the current queue of media chunks and iterators for information about upcoming chunks.
• Allow MediaCodecSelectors to return multiple compatible decoders for MediaCodecRenderer, and provide an (optional) MediaCodecSelector that falls back to less preferred decoders like MediaCodec.createDecoderByType (#273).
• Enable gzip for requests made by SingleSampleMediaSource (#4771).
• Fix bug reporting buffered position for multi-period windows, and add convenience methods Player.getTotalBufferedDuration and Player.getContentBufferedDuration (#4023).
• Fix bug where transitions to clipped media sources would happen too early (#4583).
• Fix bugs reporting events for multi-period media sources (#4492 and #4634).
• Fix issue where removing looping media from a playlist throws an exception (#4871).
• Fix issue where the preferred audio or text track would not be selected if mapped onto a secondary renderer of the corresponding type (#4711).
• Fix issue where errors of upcoming playlist items are thrown too early (#4661).
• Allow edit lists which do not start with a sync sample. (#4774).
• Fix issue with audio discontinuities at period transitions, e.g. when looping (#3829).
• Fix issue where player.getCurrentTag() throws an IndexOutOfBoundsException (#4822).
• Fix bug preventing use of multiple key session support (multiSession=true) for non-Widevine DefaultDrmSessionManager instances (#4834).
• Fix issue where audio and video would desynchronize when playing concatenations of gapless content (#4559).
• IMA extension:
  • Refine the previous fix for empty ad groups to avoid discarding ad breaks unnecessarily (#4030 and #4280).
  • Fix handling of empty postrolls (#4681).
  • Fix handling of postrolls with multiple ads (#4710).
• MediaSession extension:
  • Add MediaSessionConnector.setCustomErrorMessage to support setting custom error messages.
  • Add MediaMetadataProvider to support setting custom metadata (#3497).
• Cronet extension: Now distributed via jCenter.
• FFmpeg extension: Support mu-law and A-law PCM.

2.8.4 (2018-08-17)

• IMA extension: Improve handling of consecutive empty ad groups (#4030), (#4280).

2.8.3 (2018-07-23)

• IMA extension:
  • Fix behavior when creating/releasing the player then releasing ImaAdsLoader (#3879).
  • Add support for setting slots for companion ads.
• Captions:
  • TTML: Fix an issue with TTML using font size as % of cell resolution that makes SubtitleView.setApplyEmbeddedFontSizes() not work correctly. (#4491).
  • CEA-608: Improve handling of embedded styles (#4321).
• DASH:
  • Exclude text streams from duration calculations (#4029).
  • Fix freezing when playing multi-period manifests with EventStreams (#4492).
• DRM: Allow DrmInitData to carry a license server URL (#3393).
• MPEG-TS: Fix bug preventing SCTE-35 cues from being output (#4573).
• Expose all internal ID3 data stored in MP4 udta boxes, and switch from using CommentFrame to InternalFrame for frames with gapless metadata in MP4.
• Add PlayerView.isControllerVisible (#4385).
• Fix issue playing DRM protected streams on Asus Zenfone 2 (#4403).
• Add support for multiple audio and video tracks in MPEG-PS streams (#4406).
• Add workaround for track index mismatches between trex and tkhd boxes in fragmented MP4 files (#4477).
• Add workaround for track index mismatches between tfhd and tkhd boxes in fragmented MP4 files (#4083).
• Ignore all MP4 edit lists if one edit list couldn't be handled (#4348).
• Fix issue when switching track selection from an embedded track to a primary track in DASH (#4477).
• Fix accessibility class name for DefaultTimeBar (#4611).
• Improved compatibility with FireOS devices.

2.8.2 (2018-06-06)

• IMA extension: Don't advertise support for video/mpeg ad media, as we don't have an extractor for this (#4297).
• DASH: Fix playback getting stuck when playing representations that have both sidx atoms and non-zero presentationTimeOffset values.
• HLS:
  • Allow injection of custom playlist trackers.
  • Fix adaptation in live playlists with EXT-X-PROGRAM-DATE-TIME tags.
• Mitigate memory leaks when MediaSource loads are slow to cancel (#4249).
• Fix inconsistent Player.EventListener invocations for recursive player state changes (#4276).
• Fix MediaCodec.native_setSurface crash on Moto C (#4315).
• Fix missing whitespace in CEA-608 (#3906).
• Fix crash downloading HLS media playlists (#4396).
• Fix a bug where download cancellation was ignored (#4403).
• Set METADATA_KEY_TITLE on media descriptions (#4292).
• Allow apps to register custom MIME types (#4264).

2.8.1 (2018-05-22)

• HLS:
  • Fix playback of livestreams with EXT-X-PROGRAM-DATE-TIME tags (#4239).
  • Fix playback of clipped streams starting from non-keyframe positions (#4241).
• OkHttp extension: Fix to correctly include response headers in thrown InvalidResponseCodeExceptions.
• Add possibility to cancel PlayerMessages.
• UI:
  • Add PlayerView.setKeepContentOnPlayerReset to keep the currently displayed video frame or media artwork visible when the player is reset (#2843).
• Fix crash when switching surface on Moto E(4) (#4134).
• Fix a bug that could cause event listeners to be called with inconsistent information if an event listener interacted with the player (#4262).
• Audio:
  • Fix extraction of PCM in MP4/MOV (#4228).
  • FLAC: Supports seeking for FLAC files without SEEKTABLE (#1808).
• Captions:
  • TTML:
    • Fix a styling issue when there are multiple regions displayed at the same time that can make text size of each region much smaller than defined.
    • Fix an issue when the caption line has no text (empty line or only line break), and the line's background is still displayed.
    • Support TTML font size using % correctly (as percentage of document cell resolution).

2.8.0 (2018-05-03)

• Downloading:
  • Add DownloadService, DownloadManager and related classes (#2643). Information on using these components to download progressive formats can be found here. To see how to download DASH, HLS and SmoothStreaming media, take a look at the app.
  • Updated main demo app to support downloading DASH, HLS, SmoothStreaming and progressive media.
• MediaSources:
  • Allow reusing media sources after they have been released and also in parallel to allow adding them multiple times to a concatenation. (#3498).
  • Merged DynamicConcatenatingMediaSource into ConcatenatingMediaSource and deprecated DynamicConcatenatingMediaSource.
  • Allow clipping of child media sources where the period and window have a non-zero offset with ClippingMediaSource.
  • Allow adding and removing MediaSourceEventListeners to MediaSources after they have been created. Listening to events is now supported for all media sources including composite sources.
  • Added callbacks to MediaSourceEventListener to get notified when media periods are created, released and being read from.
  • Support live stream clipping with ClippingMediaSource.
  • Allow setting tags for all media sources in their factories. The tag of the current window can be retrieved with Player.getCurrentTag.
• UI:
  • Add support for displaying error messages and a buffering spinner in PlayerView.
  • Add support for listening to AspectRatioFrameLayout's aspect ratio update (#3736).
  • Add PlayerNotificationManager for displaying notifications reflecting the player state.
  • Add TrackSelectionView for selecting tracks with DefaultTrackSelector.
  • Add TrackNameProvider for converting track Formats to textual descriptions, and DefaultTrackNameProvider as a default implementation.
• Track selection:
  • Reworked MappingTrackSelector and DefaultTrackSelector.
  • DefaultTrackSelector.Parameters now implements Parcelable.
  • Added UI components for track selection (see above).
• Audio:
  • Support extracting data from AMR container formats, including both narrow and wide band (#2527).
  • FLAC:
    • Sniff FLAC files correctly if they have ID3 headers (#4055).
    • Supports FLAC files with high sample rate (176400 and 192000) (#3769).
  • Factor out AudioTrack position tracking from DefaultAudioSink.
  • Fix an issue where the playback position would pause just after playback begins, and poll the audio timestamp less frequently once it starts advancing (#3841).
  • Add an option to skip silent audio in PlaybackParameters (#2635).
  • Fix an issue where playback of TrueHD streams would get stuck after seeking due to not finding a syncframe (#3845).
  • Fix an issue with eac3-joc playback where a codec would fail to configure (#4165).
  • Handle non-empty end-of-stream buffers, to fix gapless playback of streams with encoder padding when the decoder returns a non-empty final buffer.
  • Allow trimming more than one sample when applying an elst audio edit via gapless playback info.
  • Allow overriding skipping/scaling with custom AudioProcessors (#3142).
• Caching:
  • Add release method to the Cache interface, and prevent multiple instances of SimpleCache using the same folder at the same time.
  • Cache redirect URLs (#2360).
• DRM:
  • Allow multiple listeners for DefaultDrmSessionManager.
  • Pass DrmSessionManager to ExoPlayerFactory instead of RendererFactory.
  • Change minimum API requirement for CBC and pattern encryption from 24 to 25 (#4022).
  • Fix handling of 307/308 redirects when making license requests (#4108).
• HLS:
  • Fix playlist loading error propagation when the current selection does not include all of the playlist's variants.
  • Fix SAMPLE-AES-CENC and SAMPLE-AES-CTR EXT-X-KEY methods (#4145).
  • Preeptively declare an ID3 track in chunkless preparation (#4016).
  • Add support for multiple #EXT-X-MAP tags in a media playlist (#4164).
  • Fix seeking in live streams (#4187).
• IMA extension:
  • Allow setting the ad media load timeout (#3691).
  • Expose ad load errors via MediaSourceEventListener on AdsMediaSource, and allow setting an ad event listener on ImaAdsLoader. Deprecate the AdsMediaSource.EventListener.
• Add AnalyticsListener interface which can be registered in SimpleExoPlayer to receive detailed metadata for each ExoPlayer event.
• Optimize seeking in FMP4 by enabling seeking to the nearest sync sample within a fragment. This benefits standalone FMP4 playbacks, DASH and SmoothStreaming.
• Updated default max buffer length in DefaultLoadControl.
• Fix ClearKey decryption error if the key contains a forward slash (#4075).
• Fix crash when switching surface on Huawei P9 Lite (#4084), and Philips QM163E (#4104).
• Support ZLIB compressed PGS subtitles.
• Added getPlaybackError to Player interface.
• Moved initial bitrate estimate from AdaptiveTrackSelection to DefaultBandwidthMeter.
• Removed default renderer time offset of 60000000 from internal player. The actual renderer timestamp offset can be obtained by listening to BaseRenderer.onStreamChanged.
• Added dependencies on checkerframework annotations for static code analysis.

2.7.3 (2018-04-04)

• Fix ProGuard configuration for Cast, IMA and OkHttp extensions.
• Update OkHttp extension to depend on OkHttp 3.10.0.

2.7.2 (2018-03-29)

• Gradle: Upgrade Gradle version from 4.1 to 4.4 so it can work with Android Studio 3.1 (#3708).
• Match codecs starting with "mp4a" to different Audio MimeTypes (#3779).
• Fix ANR issue on Redmi 4X and Redmi Note 4 (#4006).
• Fix handling of zero padded strings when parsing Matroska streams (#4010).
• Fix "Decoder input buffer too small" error when playing some FLAC streams.
• MediaSession extension: Omit fast forward and rewind actions when media is not seekable (#4001).

2.7.1 (2018-03-09)

• Gradle: Replaced 'compile' (deprecated) with 'implementation' and 'api'. This may lead to build breakage for applications upgrading from previous version that rely on indirect dependencies of certain modules. In such cases, application developers need to add the missing dependency to their gradle file. You can read more about the new dependency configurations here.
• HlsMediaSource: Make HLS periods start at zero instead of the epoch. Applications that rely on HLS timelines having a period starting at the epoch will need to update their handling of HLS timelines. The program date time is still available via the informational Timeline.Window.windowStartTimeMs field (#3865, #3888).
• Enable seeking in MP4 streams where duration is set incorrectly in the track header (#3926).
• Video: Force rendering a frame periodically in MediaCodecVideoRenderer and LibvpxVideoRenderer, even if it is late.

2.7.0 (2018-02-19)

• Player interface:
  • Add optional parameter to stop to reset the player when stopping.
  • Add a reason to EventListener.onTimelineChanged to distinguish between initial preparation, reset and dynamic updates.
  • Add Player.DISCONTINUITY_REASON_AD_INSERTION to the possible reasons reported in Eventlistener.onPositionDiscontinuity to distinguish transitions to and from ads within one period from transitions between periods.
  • Replaced ExoPlayer.sendMessages with ExoPlayer.createMessage to allow more customization of the message. Now supports setting a message delivery playback position and/or a delivery handler (#2189).
  • Add Player.VideoComponent, Player.TextComponent and Player.MetadataComponent interfaces that define optional video, text and metadata output functionality. New getVideoComponent, getTextComponent and getMetadataComponent methods provide access to this functionality.
• Add ExoPlayer.setSeekParameters for controlling how seek operations are performed. The SeekParameters class contains defaults for exact seeking and seeking to the closest sync points before, either side or after specified seek positions. SeekParameters are not currently supported when playing HLS streams.
• DefaultTrackSelector:
  • Replace DefaultTrackSelector.Parameters copy methods with a builder.
  • Support disabling of individual text track selection flags.
• Buffering:
  • Allow a back-buffer of media to be retained behind the current playback position, for fast backward seeking. The back-buffer can be configured by custom LoadControl implementations.
  • Add ability for SequenceableLoader to re-evaluate its buffer and discard buffered media so that it can be re-buffered in a different quality.
  • Allow more flexible loading strategy when playing media containing multiple sub-streams, by allowing injection of custom CompositeSequenceableLoader factories through DashMediaSource.Factory, HlsMediaSource.Factory, SsMediaSource.Factory, and MergingMediaSource.
  • Play out existing buffer before retrying for progressive live streams (#1606).
• UI:
  • Generalized player and control views to allow them to bind with any Player, and renamed them to PlayerView and PlayerControlView respectively.
  • Made PlayerView automatically apply video rotation when configured to use TextureView (#91).
  • Made PlayerView play button behave correctly when the player is ended (#3689), and call a PlaybackPreparer when the player is idle.
• DRM: Optimistically attempt playback of DRM protected content that does not declare scheme specific init data in the manifest. If playback of clear samples without keys is allowed, delay DRM session error propagation until keys are actually needed (#3630).
• DASH:
  • Support in-band Emsg events targeting the player with scheme id urn:mpeg:dash:event:2012 and scheme values "1", "2" and "3".
  • Support EventStream elements in DASH manifests.
• HLS:
  • Add opt-in support for chunkless preparation in HLS. This allows an HLS source to finish preparation without downloading any chunks, which can significantly reduce initial buffering time (#3149). More details can be found here.
  • Fail if unable to sync with the Transport Stream, rather than entering stuck in an indefinite buffering state.
  • Fix mime type propagation (#3653).
  • Fix ID3 context reuse across segment format changes (#3622).
  • Use long for media sequence numbers (#3747)
  • Add initial support for the EXT-X-GAP tag.
• Audio:
  • Support TrueHD passthrough for rechunked samples in Matroska files (#2147).
  • Support resampling 24-bit and 32-bit integer to 32-bit float for high resolution output in DefaultAudioSink (#3635).
• Captions:
  • Basic support for PGS subtitles (#3008).
  • Fix handling of CEA-608 captions where multiple buffers have the same presentation timestamp (#3782).
• Caching:
  • Fix cache corruption issue (#3762).
  • Implement periodic check in CacheDataSource to see whether it's possible to switch to reading/writing the cache having initially bypassed it.
• IMA extension:
  • Fix the player getting stuck when an ad group fails to load (#3584).
  • Work around loadAd not being called beore the LOADED AdEvent arrives (#3552).
  • Handle asset mismatch errors (#3801).
  • Add support for playing non-Extractor content MediaSources in the IMA demo app (#3676).
  • Fix handling of ad tags where ad groups are out of order (#3716).
  • Fix handling of ad tags with only preroll/postroll ad groups (#3715).
  • Propagate ad media preparation errors to IMA so that the ads can be skipped.
  • Handle exceptions in IMA callbacks so that can be logged less verbosely.
• New Cast extension. Simplifies toggling between local and Cast playbacks.
• EventLogger moved from the demo app into the core library.
• Fix ANR issue on the Huawei P8 Lite, Huawei Y6II, Moto C+, Meizu M5C, Lenovo K4 Note and Sony Xperia E5. (#3724, #3835).
• Fix potential NPE when removing media sources from a DynamicConcatenatingMediaSource (#3796).
• Check sys.display-size on Philips ATVs (#3807).
• Release Extractors on the loading thread to avoid potentially leaking resources when the playback thread has quit by the time the loading task has completed.
• ID3: Better handle malformed ID3 data (#3792).
• Support 14-bit mode and little endianness in DTS PES packets (#3340).
• Demo app: Add ability to download not DRM protected content.

2.6.1 (2017-12-15)

• Add factories to ExtractorMediaSource, HlsMediaSource, SsMediaSource, DashMediaSource and SingleSampleMediaSource.
• Use the same listener MediaSourceEventListener for all MediaSource implementations.
• IMA extension:
  • Support non-ExtractorMediaSource ads (#3302).
  • Skip ads before the ad preceding the player's initial seek position (#3527).
  • Fix ad loading when there is no preroll.
  • Add an option to turn off hiding controls during ad playback (#3532).
  • Support specifying an ads response instead of an ad tag (#3548).
  • Support overriding the ad load timeout (#3556).
• DASH: Support time zone designators in ISO8601 UTCTiming elements (#3524).
• Audio:
  • Support 32-bit PCM float output from DefaultAudioSink, and add an option to use this with FfmpegAudioRenderer.
  • Add support for extracting 32-bit WAVE files (#3379).
  • Support extraction and decoding of Dolby Atmos (#2465).
  • Fix handling of playback parameter changes while paused when followed by a seek.
• SimpleExoPlayer: Allow multiple audio and video debug listeners.
• DefaultTrackSelector: Support undefined language text track selection when the preferred language is not available (#2980).
• Add options to DefaultLoadControl to set maximum buffer size in bytes and to choose whether size or time constraints are prioritized.
• Use surfaceless context for secure DummySurface, if available (#3558).
• FLV: Fix playback of live streams that do not contain an audio track (#3188).
• CEA-608: Fix handling of row count changes in roll-up mode (#3513).
• Prevent period transitions when seeking to the end of a period when paused (#2439).

2.6.0 (2017-11-03)

• Removed "r" prefix from versions. This release is "2.6.0", not "r2.6.0".
• New Player.DefaultEventListener abstract class can be extended to avoid having to implement all methods defined by Player.EventListener.
• Added a reason to EventListener.onPositionDiscontinuity (#3252).
• New setShuffleModeEnabled method for enabling shuffled playback.
• SimpleExoPlayer: Support for multiple video, text and metadata outputs.
• Support for Renderers that don't consume any media (#3212).
• Fix reporting of internal position discontinuities via Player.onPositionDiscontinuity. DISCONTINUITY_REASON_SEEK_ADJUSTMENT is added to disambiguate position adjustments during seeks from other types of internal position discontinuity.
• Fix potential IndexOutOfBoundsException when calling ExoPlayer.getDuration (#3362).
• Fix playbacks involving looping, concatenation and ads getting stuck when media contains tracks with uneven durations (#1874).
• Fix issue with ContentDataSource when reading from certain ContentProvider implementations (#3426).
• Better playback experience when the video decoder cannot keep up, by skipping to key-frames. This is particularly relevant for variable speed playbacks.
• Allow SingleSampleMediaSource to suppress load errors (#3140).
• DynamicConcatenatingMediaSource: Allow specifying a callback to be invoked after a dynamic playlist modification has been applied (#3407).
• Audio: New AudioSink interface allows customization of audio output path.
• Offline: Added Downloader implementations for DASH, HLS, SmoothStreaming and progressive streams.
• Track selection:
  • Fixed adaptive track selection logic for live playbacks (#3017).
  • Added ability to select the lowest bitrate tracks.
• DASH:
  • Don't crash when a malformed or unexpected manifest update occurs (#2795).
• HLS:
  • Support for Widevine protected FMP4 variants.
  • Support CEA-608 in FMP4 variants.
  • Support extractor injection (#2748).
• DRM:
  • Improved compatibility with ClearKey content (#3138).
  • Support multiple PSSH boxes of the same type.
  • Retry initial provisioning and key requests if they fail
  • Fix incorrect parsing of non-CENC sinf boxes.
• IMA extension:
  • Expose AdsLoader via getter (#3322).
  • Handle setPlayWhenReady calls during ad playbacks (#3303).
  • Ignore seeks if an ad is playing (#3309).
  • Improve robustness of ImaAdsLoader in case content is not paused between content to ad transitions (#3430).
• UI:
  • Allow specifying a Drawable for the TimeBar scrubber (#3337).
  • Allow multiple listeners on TimeBar (#3406).
• New Leanback extension: Simplifies binding Exoplayer to Leanback UI components.
• Unit tests moved to Robolectric.
• Misc bugfixes.

r2.5.4 (2017-10-19)

• Remove unnecessary media playlist fetches during playback of live HLS streams.
• Add the ability to inject a HLS playlist parser through HlsMediaSource.
• Fix potential IndexOutOfBoundsException when using ImaMediaSource (#3334).
• Fix an issue parsing MP4 content containing non-CENC sinf boxes.
• Fix memory leak when seeking with repeated periods.
• Fix playback position when ExoPlayer.prepare is called with resetPosition set to false.
• Ignore MP4 edit lists that seem invalid (#3351).
• Add extractor flag for ignoring all MP4 edit lists (#3358).
• Improve extensibility by exposing public constructors for FrameworkMediaCrypto and by making DefaultDashChunkSource.getNextChunk non-final.

r2.5.3 (2017-09-20)

• IMA extension: Support skipping of skippable ads on AndroidTV and other non-touch devices (#3258).
• HLS: Fix broken WebVTT captions when PTS wraps around (#2928).
• Captions: Fix issues rendering CEA-608 captions (#3250).
• Workaround broken AAC decoders on Galaxy S6 (#3249).
• Caching: Fix infinite loop when cache eviction fails (#3260).
• Caching: Force use of BouncyCastle on JellyBean to fix decryption issue (#2755).

r2.5.2 (2017-09-11)

• IMA extension: Fix issue where ad playback could end prematurely for some content types (#3180).
• RTMP extension: Fix SIGABRT on fast RTMP stream restart (#3156).
• UI: Allow app to manually specify ad markers (#3184).
• DASH: Expose segment indices to subclasses of DefaultDashChunkSource (#3037).
• Captions: Added robustness against malformed WebVTT captions (#3228).
• DRM: Support forcing a specific license URL.
• Fix playback error when seeking in media loaded through content:// URIs (#3216).
• Fix issue playing MP4s in which the last atom specifies a size of zero (#3191).
• Workaround playback failures on some Xiaomi devices (#3171).
• Workaround SIGSEGV issue on some devices when setting and swapping surface for secure playbacks (#3215).
• Workaround for Nexus 7 issue when swapping output surface (#3236).
• Workaround for SimpleExoPlayerView's surface not being hidden properly (#3160).

r2.5.1 (2017-08-08)

• Fix an issue that could cause the reported playback position to stop advancing in some cases.
• Fix an issue where a Surface could be released whilst still in use by the player.

r2.5.0 (2017-08-07)

• IMA extension: Wraps the Google Interactive Media Ads (IMA) SDK to provide an easy and seamless way of incorporating display ads into ExoPlayer playbacks. You can read more about the IMA extension here.
• MediaSession extension: Provides an easy way to connect ExoPlayer with MediaSessionCompat in the Android Support Library.
• RTMP extension: An extension for playing streams over RTMP.
• Build: Made it easier for application developers to depend on a local checkout of ExoPlayer. You can learn how to do this here.
• Core playback improvements:
  • Eliminated re-buffering when changing audio and text track selections during playback of progressive streams (#2926).
  • New DynamicConcatenatingMediaSource class to support playback of dynamic playlists.
  • New ExoPlayer.setRepeatMode method for dynamic toggling of repeat mode during playback. Use of setRepeatMode should be preferred to LoopingMediaSource for most looping use cases. You can read more about setRepeatMode here.
  • Eliminated jank when switching video playback from one Surface to another on API level 23+ for unencrypted content, and on devices that support the EGL_EXT_protected_content OpenGL extension for protected content (#677).
  • Enabled ExoPlayer instantiation on background threads without Loopers. Events from such players are delivered on the application's main thread.
• HLS improvements:
  • Optimized adaptive switches for playlists that specify the EXT-X-INDEPENDENT-SEGMENTS tag.
  • Optimized in-buffer seeking (#551).
  • Eliminated re-buffering when changing audio and text track selections during playback, provided the new selection does not require switching to different renditions (#2718).
  • Exposed all media playlist tags in ExoPlayer's MediaPlaylist object.
• DASH: Support for seamless switching across streams in different AdaptationSet elements (#2431).
• DRM: Support for additional crypto schemes (cbc1, cbcs and cens) on API level 24+ (#1989).
• Captions: Initial support for SSA/ASS subtitles (#889).
• AndroidTV: Fixed issue where tunneled video playback would not start on some devices (#2985).
• MPEG-TS: Fixed segmentation issue when parsing H262 (#2891).
• Cronet extension: Support for a user-defined fallback if Cronet library is not present.
• Fix buffer too small IllegalStateException issue affecting some composite media playbacks (#2900).
• Misc bugfixes.

r2.4.4 (2017-07-19)

• HLS/MPEG-TS: Some initial optimizations of MPEG-TS extractor performance (#3040).
• HLS: Fix propagation of format identifier for CEA-608 (#3033).
• HLS: Detect playlist stuck and reset conditions (#2872).
• Video: Fix video dimension reporting on some devices (#3007).

r2.4.3 (2017-06-30)

• Audio: Workaround custom audio decoders misreporting their maximum supported channel counts (#2940).
• Audio: Workaround for broken MediaTek raw decoder on some devices (#2873).
• Captions: Fix TTML captions appearing at the top of the screen (#2953).
• Captions: Fix handling of some DVB subtitles (#2957).
• Track selection: Fix setSelectionOverride(index, tracks, null) (#2988).
• GVR extension: Add support for mono input (#2710).
• FLAC extension: Fix failing build (#2977).
• Misc bugfixes.

r2.4.2 (2017-06-06)

• Stability: Work around Nexus 10 reboot when playing certain content (#2806).
• MP3: Correctly treat MP3s with INFO headers as constant bitrate (#2895).
• HLS: Use average rather than peak bandwidth when available (#2863).
• SmoothStreaming: Fix timeline for live streams (#2760).
• UI: Fix DefaultTimeBar invalidation (#2871).
• Misc bugfixes.

r2.4.1 (2017-05-23)

• Stability: Avoid OutOfMemoryError in extractors when parsing malformed media (#2780).
• Stability: Avoid native crash on Galaxy Nexus. Avoid unnecessarily large codec input buffer allocations on all devices (#2607).
• Variable speed playback: Fix interpolation for rate/pitch adjustment (#2774).
• HLS: Include EXT-X-DATERANGE tags in HlsMediaPlaylist.
• HLS: Don't expose CEA-608 track if CLOSED-CAPTIONS=NONE (#2743).
• HLS: Correctly propagate errors loading the media playlist (#2623).
• UI: DefaultTimeBar enhancements and bug fixes (#2740).
• Ogg: Fix failure to play some Ogg files (#2782).
• Captions: Don't select text tack with no language by default.
• Captions: TTML positioning fixes (#2824).
• Misc bugfixes.

r2.4.0 (2017-04-25)

• New modular library structure. You can read more about depending on individual library modules here.
• Variable speed playback support on API level 16+. You can read more about changing the playback speed here (#26).
• New time bar view, including support for displaying ad break markers.
• Support DVB subtitles in MPEG-TS and MKV.
• Support adaptive playback for audio only DASH, HLS and SmoothStreaming (#1975).
• Support for setting extractor flags on DefaultExtractorsFactory (#2657).
• Support injecting custom renderers into SimpleExoPlayer using a new RenderersFactory interface.
• Correctly set ExoPlayer's internal thread priority to THREAD_PRIORITY_AUDIO.
• TX3G: Support styling and positioning.
• FLV:
  • Support MP3 in FLV.
  • Skip unhandled metadata rather than failing (#2634).
  • Fix potential OutOfMemory errors.
• ID3: Better handle malformed ID3 data (#2604, #2663).
• FFmpeg extension: Fixed build instructions (#2561).
• VP9 extension: Reduced binary size.
• FLAC extension: Enabled 64 bit targets.
• Misc bugfixes.

r2.3.1 (2017-03-23)

• Fix NPE enabling WebVTT subtitles in DASH streams (#2596).
• Fix skipping to keyframes when MediaCodecVideoRenderer is enabled but without a Surface (#2575).
• Minor fix for CEA-708 decoder (#2595).

r2.3.0 (2017-03-16)

• GVR extension: Wraps the Google VR Audio SDK to provide spatial audio rendering. You can read more about the GVR extension here.
• DASH improvements:
  • Support embedded CEA-608 closed captions (#2362).
  • Support embedded EMSG events (#2176).
  • Support mspr:pro manifest element (#2386).
  • Correct handling of empty segment indices at the start of live events (#1865).
• HLS improvements:
  • Respect initial track selection (#2353).
  • Reduced frequency of media playlist requests when playback position is close to the live edge (#2548).
  • Exposed the master playlist through ExoPlayer.getCurrentManifest() (#2537).
  • Support CLOSED-CAPTIONS #EXT-X-MEDIA type (#341).
  • Fixed handling of negative values in #EXT-X-SUPPORT (#2495).
  • Fixed potential endless buffering state for streams with WebVTT subtitles (#2424).
• MPEG-TS improvements:
  • Support for multiple programs.
  • Support for multiple closed captions and caption service descriptors (#2161).
• MP3: Add FLAG_ENABLE_CONSTANT_BITRATE_SEEKING extractor option to enable constant bitrate seeking in MP3 files that would otherwise be unseekable (#2445).
• ID3: Better handle malformed ID3 data (#2486).
• Track selection: Added maxVideoBitrate parameter to DefaultTrackSelector.
• DRM: Add support for CENC ClearKey on API level 21+ (#2361).
• DRM: Support dynamic setting of key request headers (#1924).
• SmoothStreaming: Fixed handling of start_time placeholder (#2447).
• FLAC extension: Fix proguard configuration (#2427).
• Misc bugfixes.

r2.2.0 (2017-01-30)

• Demo app: Automatic recovery from BehindLiveWindowException, plus improved handling of pausing and resuming live streams (#2344).
• AndroidTV: Added Support for tunneled video playback (#1688).
• DRM: Renamed StreamingDrmSessionManager to DefaultDrmSessionManager and added support for using offline licenses (#876).
• DRM: Introduce OfflineLicenseHelper to help with offline license acquisition, renewal and release.
• UI: Updated player control assets. Added vector drawables for use on API level 21 and above.
• UI: Made player control seek bar work correctly with key events if focusable (#2278).
• HLS: Improved support for streams that use EXT-X-DISCONTINUITY without EXT-X-DISCONTINUITY-SEQUENCE (#1789).
• HLS: Support for EXT-X-START tag (#1544).
• HLS: Check #EXTM3U header is present when parsing the playlist. Fail gracefully if not (#2301).
• HLS: Fix memory leak (#2319).
• HLS: Fix non-seamless first adaptation where master playlist omits resolution tags (#2096).
• HLS: Fix handling of WebVTT subtitle renditions with non-standard segment file extensions (#2025 and #2355).
• HLS: Better handle inconsistent HLS playlist update (#2249).
• DASH: Don't overflow when dealing with large segment numbers (#2311).
• DASH: Fix propagation of language from the manifest (#2335).
• SmoothStreaming: Work around "Offset to sample data was negative" failures (#2292, #2101 and #1152).
• MP3/ID3: Added support for parsing Chapter and URL link frames (#2316).
• MP3/ID3: Handle ID3 frames that end with empty text field (#2309).
• Added ClippingMediaSource for playing clipped portions of media (#1988).
• Added convenience methods to query whether the current window is dynamic and seekable (#2320).
• Support setting of default headers on HttpDataSource.Factory implementations (#2166).
• Fixed cache failures when using an encrypted cache content index.
• Fix visual artifacts when switching output surface (#2093).
• Fix gradle + proguard configurations.
• Fix player position when replacing the MediaSource (#2369).
• Misc bug fixes, including #2330, #2269, #2252, #2264 and #2290.

r2.1.1 (2016-12-20)

• Fix some subtitle types (e.g. WebVTT) being displayed out of sync (#2208).
• Fix incorrect position reporting for on-demand HLS media that includes EXT-X-PROGRAM-DATE-TIME tags (#2224).
• Fix issue where playbacks could get stuck in the initial buffering state if over 1MB of data needs to be read to initialize the playback.

r2.1.0 (2016-12-14)

• HLS: Support for seeking in live streams (#87).
• HLS: Improved support:
  • Support for EXT-X-PROGRAM-DATE-TIME (#747).
  • Improved handling of sample timestamps and their alignment across variants and renditions.
  • Fix issue that could cause playbacks to get stuck in an endless initial buffering state.
  • Correctly propagate BehindLiveWindowException instead of IndexOutOfBoundsException exception (#1695).
• MP3/MP4: Support for ID3 metadata, including embedded album art (#979).
• Improved customization of UI components. You can read about customization of ExoPlayer's UI components here.
• Robustness improvements when handling MediaSource timeline changes and MediaPeriod transitions.
• CEA-608: Support for caption styling and positioning.
• MPEG-TS: Improved support:
  • Support injection of custom TS payload readers.
  • Support injection of custom section payload readers.
  • Support SCTE-35 splice information messages.
  • Support multiple table sections in a single PSI section.
  • Fix NullPointerException when an unsupported stream type is encountered (#2149).
  • Avoid failure when expected ID3 header not found (#1966).
• Improvements to the upstream cache package.
  • Support caching of media segments for DASH, HLS and SmoothStreaming. Note that caching of manifest and playlist files is still not supported in the (normal) case where the corresponding responses are compressed.
  • Support caching for ExtractorMediaSource based playbacks.
• Improved flexibility of SimpleExoPlayer (#2102).
• Fix issue where only the audio of a video would play due to capability detection issues (#2007, #2034 and #2157).
• Fix issues that could cause ExtractorMediaSource based playbacks to get stuck buffering (#1962).
• Correctly set SimpleExoPlayerView surface aspect ratio when an active player is attached (#2077).
• OGG: Fix playback of short OGG files (#1976).
• MP4: Support .mp3 tracks (#2066).
• SubRip: Don't fail playbacks if SubRip file contains negative timestamps (#2145).
• Misc bugfixes.

r2.0.4 (2016-10-20)

• Fix crash on Jellybean devices when using playback controls (#1965).

r2.0.3 (2016-10-17)

• Fixed NullPointerException in ExtractorMediaSource (#1914).
• Fixed NullPointerException in HlsMediaPeriod (#1907).
• Fixed memory leak in PlaybackControlView (#1908).
• Fixed strict mode violation when using SimpleExoPlayer.setVideoPlayerTextureView().
• Fixed L3 Widevine provisioning (#1925).
• Fixed hiding of controls with use_controller="false" (#1919).
• Improvements to Cronet network stack extension.
• Misc bug fixes.

r2.0.2 (2016-10-06)

• Fixes for MergingMediaSource and sideloaded subtitles. (#1882, #1854, #1900).
• Reduced effect of application code leaking player references (#1855).
• Initial support for fragmented MP4 in HLS.
• Misc bug fixes and minor features.

r2.0.1 (2016-09-30)

• Fix playback of short duration content (#1837).
• Fix MergingMediaSource preparation issue (#1853).
• Fix live stream buffering (out of memory) issue (#1825).

r2.0.0 (2016-09-14)

ExoPlayer 2.x is a major iteration of the library. It includes significant API and architectural changes, new features and many bug fixes. You can read about some of the motivations behind ExoPlayer 2.x here.

• Root package name changed to com.google.android.exoplayer2. The library structure and class names have also been sanitized. Read more here.
• Key architectural changes:
  • Late binding between rendering and media source components. Allows the same rendering components to be re-used from one playback to another. Enables features such as gapless playback through playlists and DASH multi-period support.
  • Improved track selection design. More details can be found here.
  • LoadControl now used to control buffering and loading across all playback types.
  • Media source components given additional structure. A new MediaSource class has been introduced. MediaSources expose Timelines that describe the media they expose, and can consist of multiple MediaPeriods. This enables features such as seeking in live playbacks and DASH multi-period support.
  • Responsibility for loading the initial DASH/SmoothStreaming/HLS manifest is promoted to the corresponding MediaSource components and is no longer the application's responsibility.
  • Higher level abstractions such as SimpleExoPlayer have been added to the library. These make the library easier to use for common use cases. The demo app is halved in size as a result, whilst at the same time gaining more functionality. Read more here.
  • Enhanced library support for implementing audio extensions. Read more here.
  • Format and MediaFormat are replaced by a single Format class.
• Key new features:
  • Playlist support. Includes support for gapless playback between playlist items and consistent application of LoadControl and TrackSelector policies when transitioning between items (#1270).
  • Seeking in live playbacks for DASH and SmoothStreaming (#291).
  • DASH multi-period support (#557).
  • MediaSource composition allows MediaSources to be concatenated into a playlist, merged and looped. Read more here.
  • Looping support (see above) (#490).
  • Ability to query information about all tracks in a piece of media (including those not supported by the device) (#1121).
  • Improved player controls.
  • Support for PSSH in fMP4 moof atoms (#1143).
  • Support for Opus in Ogg (#1447).
  • CacheDataSource support for standalone media file playbacks (mp3, mp4 etc).
  • FFMPEG extension (for audio only).
• Key bug fixes:
  • Removed unnecessary secondary requests when playing standalone media files (#1041).
  • Fixed playback of video only (i.e. no audio) live streams (#758).
  • Fixed silent failure when media buffer is too small (#583).
  • Suppressed "Sending message to a Handler on a dead thread" warnings (#426).

Legacy release notes

Note: Since ExoPlayer V1 is still being maintained alongside V2, there is some overlap between these notes and the notes above. r2.0.0 followed from r1.5.11, and hence it can be assumed that all changes in r1.5.11 and earlier are included in all V2 releases. This cannot be assumed for changes in r1.5.12 and later, however it can be assumed that all such changes are included in the most recent V2 release.

r1.5.16

• VP9 extension: Reduced binary size.
• FLAC extension: Enabled 64 bit targets and fixed proguard config.
• Misc bugfixes.

r1.5.15

• SmoothStreaming: Fixed handling of start_time placeholder (#2447).
• Misc bugfixes.

r1.5.14

• Fixed cache failures when using an encrypted cache content index.
• SmoothStreaming: Work around "Offset to sample data was negative" failures (#2292, #2101 and #1152).

r1.5.13

• Improvements to the upstream cache package.
• MP4: Support .mp3 tracks (#2066).
• SubRip: Don't fail playbacks if SubRip file contains negative timestamps (#2145).
• MPEG-TS: Avoid failure when expected ID3 header not found (#1966).
• Misc bugfixes.

r1.5.12

• Improvements to Cronet network stack extension.
• Fix bug in demo app introduced in r1.5.11 that caused L3 Widevine provisioning requests to fail.
• Misc bugfixes.

r1.5.11

• Cronet network stack extension.
• HLS: Fix propagation of language for alternative audio renditions (#1784).
• WebM: Support for subsample encryption.
• ID3: Fix EOS detection for 2-byte encodings (#1774).
• MPEG-TS: Support multiple tracks of the same type.
• MPEG-TS: Work toward robust handling of stream corruption.
• Fix ContentDataSource failures triggered by garbage collector (#1759).

r1.5.10

• HLS: Stability fixes.
• MP4: Support for stz2 Atoms.
• Enable 4K format selection on Sony AndroidTV + nVidia SHIELD.
• TX3G caption fixes.

r1.5.9

• MP4: Fixed incorrect sniffing in some cases (#1523).
• MP4: Improved file compatibility (#1567).
• ID3: Support for TIT2 and APIC frames.
• Fixed querying of platform decoders on some devices.
• Misc bug fixes.

r1.5.8

• HLS: Fix handling of HTTP redirects.
• Audio: Minor adjustment to improve A/V sync.
• OGG: Support FLAC in OGG.
• TTML: Support regions.
• WAV/PCM: Support 8, 24 and 32-bit WAV and PCM audio.
• Misc bug fixes and performance optimizations.

r1.5.7

• OGG: Support added for OGG.
• FLAC: Support for FLAC extraction and playback (via an extension).
• HLS: Multiple audio track support (via Renditions).
• FMP4: Support multiple tracks in fragmented MP4 (not applicable to DASH/SmoothStreaming).
• WAV: Support for 16-bit WAV files.
• MKV: Support non-square pixel formats.
• Misc bug fixes.

r1.5.6

• MP3: Fix mono streams playing at 2x speed on some MediaTek based devices (#801).
• MP3: Fix playback of some streams when stream length is unknown.
• ID3: Support multiple frames of the same type in a single tag.
• CEA-608: Correctly handle repeated control characters, fixing an issue in which captions would immediately disappear.
• AVC3: Fix decoder failures on some MediaTek devices in the case where the first buffer fed to the decoder does not start with SPS/PPS NAL units.
• Misc bug fixes.

r1.5.5

• DASH: Enable MP4 embedded WebVTT playback (#1185)
• HLS: Fix handling of extended ID3 tags in MPEG-TS (#1181)
• MP3: Fix incorrect position calculation in VBRI header (#1197)
• Fix issue seeking backward using SingleSampleSource (#1193)

r1.5.4

• HLS: Support for variant selection and WebVtt subtitles.
• MP4: Support for embedded WebVtt.
• Improved device compatibility.
• Fix for resource leak (Issue #1066).
• Misc bug fixes + minor features.

r1.5.3

• Support for FLV (without seeking).
• MP4: Fix for playback of media containing basic edit lists.
• QuickTime: Fix parsing of QuickTime style audio sample entry.
• HLS: Add H262 support for devices that have an H262 decoder.
• Allow AudioTrack PlaybackParams (e.g. speed/pitch) on API level 23+.
• Correctly detect 4K displays on API level 23+.
• Misc bug fixes.

r1.5.2

• MPEG-TS/HLS: Fix frame drops playing H265 video.
• SmoothStreaming: Fix parsing of ProtectionHeader.

r1.5.1

• Enable smooth frame release by default.
• Added OkHttpDataSource extension.
• AndroidTV: Correctly detect 4K display size on Bravia devices.
• FMP4: Handle non-sample data in mdat boxes.
• TTML: Fix parsing of some colors on Jellybean.
• SmoothStreaming: Ignore tfdt boxes.
• Misc bug fixes.

r1.5.0

• Multi-track support.
• DASH: Limited support for multi-period manifests.
• HLS: Smoother format adaptation.
• HLS: Support for MP3 media segments.
• TTML: Support for most embedded TTML styling.
• WebVTT: Enhanced positioning support.
• Initial playback tests.
• Misc bug fixes.

r1.4.2

• Implemented automatic format detection for regular container formats.
• Added UdpDataSource for connecting to multicast streams.
• Improved robustness for MP4 playbacks.
• Misc bug fixes.

r1.4.1

• HLS: Fix premature playback failures that could occur in some cases.

r1.4.0

• Support for extracting Matroska streams (implemented by WebmExtractor).
• Support for tx3g captions in MP4 streams.
• Support for H.265 in MPEG-TS streams on supported devices.
• HLS: Added support for MPEG audio (e.g. MP3) in TS media segments.
• HLS: Improved robustness against missing chunks and variants.
• MP4: Added support for embedded MPEG audio (e.g. MP3).
• TTML: Improved handling of whitespace.
• DASH: Support Mpd.Location element.
• Add option to TsExtractor to allow non-IDR keyframes.
• Added MulticastDataSource for connecting to multicast streams.
• (WorkInProgress) - First steps to supporting seeking in DASH DVR window.
• (WorkInProgress) - First steps to supporting styled + positioned subtitles.
• Misc bug fixes.

r1.3.3

• HLS: Fix failure when playing HLS AAC streams.
• Misc bug fixes.

r1.3.2

• DataSource improvements: DefaultUriDataSource now handles http://, https://, file://, asset:// and content:// URIs automatically. It also handles file:///android_asset/* URIs, and file paths like /path/to/media.mp4 where the scheme is omitted.
• HLS: Fix for some ID3 events being dropped.
• HLS: Correctly handle 0x0 and floating point RESOLUTION tags.
• Mp3Extractor: robustness improvements.

r1.3.1

• No notes provided.