Release notes from media

1.10.0-rc02

2026-03-16T14:23:43Z

1.10.0-rc02

1.9.3

2026-03-16T15:38:18Z

Audio:
- Fix bug where playback gets stuck when playing a playlist of gapless audio in compressed offload mode.

1.10.0-rc01

2026-03-10T18:41:07Z

Session:
- Fix notification artwork icon scaling on Android Q (#3084).
UI:
- Hide playback position from the accessibility service to prevent continuous announcement update when PlayerControlView is visible.

1.10.0-beta01

2026-02-25T11:21:31Z

Common library:
- Add Format.primaryTrackGroupId to identify the primary group of embedded Format instances (#294).
ExoPlayer:
- Fix issue where ExoPlayer would not request delayed audio focus when playback is requested during phone calls.
- Fix bug where transitions from on-demand to live content may cause re-buffers at the end of the on-demand content (#3052).
- Add support for Dolby Vision Profile 10 (#2830).
Track selection:
- Change signature of DefaultTrackSelector.selectAllTracks to include the output array as a parameter, pre-populated with track overrides.
- Fix issue where embedded metadata tracks are selected irrespective of whether the corresponding primary track is selected (#294).
- Stabilize TrackSelectionParameters options for preferredVideoLanguages, preferredVideoLabels, preferredAudioLabels, preferredTextLabels and selectTextByDefault.
Extractors:
- MP4: Support files with large uuid boxes before other boxes like moov (#3046).
- MP4: Add support for Versatile Video Coding (VVC) tracks in MP4 containers.
Audio:
- Improve the retry logic of AudioOutput initialization in DefaultAudioSink (#2905).
- Attempt to match the output layout of the speakers (or Spatializer if applicable) when decoding IAMF, both with the IAMF extension and media codec decoders, supported by new fields and logic in AudioCapabilities and AudioCapabilitiesReceiver.
Metadata:
- Increase default count of metadata renderers to four to cover all potential metadata tracks published by HLS variants and renditions (#3043).
Session:
- Fix issue where system UI button placement workaround negatively affects other UI surface like Android Auto or manufacturers not needing the workaround (#3041).
- Fix issue where access to subscriptions was not synchronized (#3056).
UI:
- Add Player Composable to media3-ui-compose-material3 which combines a ContentFrame with customizable controls aligned to top, center, and bottom.
HLS extension:
- Expose ID3 (EMSG) metadata track in audio renditions (#3043).
- Allow location fallback upon encountering load errors, if redundant streams from different locations are available (#1988).
- Fix X-SNAP behaviour for HLS interstitials to correctly calculate start and resumption position (#3013).
DASH extension:
- Fix issue where tracks with unaligned segment start times cause delays or missed samples at the beginning of playback (#3057).
- Fix bug where timestamps of inband EMSG v0 metadata are not set correctly (#3024).
Decoder extensions (FFmpeg, VP9, AV1, etc.):
- Add MPEG-H UI manager support to the MPEG-H decoder extension (#3066).
Remove deprecated symbols:
- Remove androidx.media3.extractor.metadata.flac.VorbisComment. Use androidx.media3.extractor.metadata.vorbis.VorbisComment instead.
- Remove MediaSource.prepareSource(MediaSourceCaller, TransferListener). Use MediaSource.prepareSource(MediaSourceCaller, TransferListener, PlayerId) instead.

1.10.0-alpha01

2026-02-09T10:05:43Z

Common Library:
- Promote Player.mute() and Player.unmute() from UnstableApi to stable.
- Promote Format.pcmEncoding and C.PcmEncoding from UnstableApi to stable.
ExoPlayer:
- Add clipping capabilities to AdsMediaSource.
- Add support for dynamic scheduling in MediaCodecVideoRenderer to better align scheduling work and CPU wake-cycles to when video frames can be processed. You can enable this using experimentalSetEnableMediaCodecVideoRendererDurationToProgressUs() via the DefaultRenderersFactory.
- Allow setting a custom DataSource.Factory in DefaultPreloadManager.Builder.
- Allow ExoPlayer to be mocked without Robolectric by moving some default constants to ExoPlayer.Builder. Mocking this complex interface is not generally encouraged - only when the usage is minimal/simple/incidental (#2985).
  - This required moving DEFAULT_STUCK_PLAYING_DETECTION_TIMEOUT_MS from ExoPlayer to ExoPlayer.Builder (without deprecation).
- Fix bug where ProgressiveMediaSource propagates out-of-date timeline info to player and the queued periods unexpectedly get removed (#3016).
CompositionPlayer:
- Add support for EditedMediaItem.removeVideo.
Transformer:
- EditedMediaItem.Builder.setFrameRate() can now set a maximum output frame rate for video, which is particularly helpful when increasing media speed with setSpeed().
Inspector:
- Breaking change: Removed FrameExtractor. Users should now depend on the new :media3-inspector-frame module and update imports to androidx.media3.inspector.frame.FrameExtractor.
Inspector Frame:
- Introduced a new module for extracting and processing decoded video frames.
Audio:
- Change underlying decoding library for IAMF decoder extension from libiamf to iamf_tools.
- IAMF decoding supports binaural output either through the decoder (when using the IAMF decoder extension) or through the Android Spatializer.
- Correctly remove support for AC4Profile22 and other legacy profiles when assessing AC-4 decoder support in Automotive scenarios (#2609).
- Improve the retry logic of AudioOutput initialization in DefaultAudioSink (#2905).
Text:
- VobSub: Use START and STOP SPU control commands to derive cue duration instead of always defaulting to 5s (#2935).
Effect:
- Moved LottieOverlay to a new :media3-effect-lottie module (which also involved renaming it from androidx.media3.effect.LottieOverlay to androidx.media3.effect.lottie.LottieOverlay).
Effect Lottie:
- Introduced a new :media3-effect-lottie module which provides functionality for applying lottie effects to video frames.
IMA extension:
- Update the IMA SDK version to 3.39.0 in order to have access to the latest Ad media info API.
- Bug fix: Corrected an issue where the ad MIME type did not match the MIME type provided in the IMA LOADED event. The fix now maps the ad MIME type using the ad media info provided by IMA.
- Added setEnableCustomTabs to ImaAdsLoader and ImaServerSideAdInsertionMediaSource, allowing users to control whether ad click-through URLs are launched using Custom Tabs.
- Add the ImaAdTagUriBuilder, a class that offers an alternative way to construct an adTagUri. It contains the setPreferredLinearOrientation API. This is an API in alpha testing that will allow you to set your preferred orientation for linear ads. If you wish to join the alpha testing group, please reach out to your account partner.
Session:
- Fix bug where large arrays in MediaMetadata.artworkData can crash the app.
- Use type int for @Player.Command argument in the ActionFactory interface (#2933).
- Make MediaSessionService and MediaLibraryService a LifecycleService, more easily allowing to attach lifecycle-aware operations to the service's lifecycle (#187).
- Stop supporting device volume change commands from MediaController and MediaBrowser for local playbacks. Apps should not change the local device volume, and if required, can use AudioManager APIs for this purpose.
- Detect stale Intent instances that started the service as a foreground service. This prevents a ForegroundServiceDidNotStartInTimeException being thrown by the system. This is a breaking change on an unstable API for apps implementing a custom MediaNotification.Provider as there is a new required method.
- Add builders for PendingIntent instances to be used with home screen widgets (#2933).
- Add static methods for creating Intent instances for Compose-based home screen widgets (#2933).
- Fix bug where the media item transition wasn't reported to controllers when playback transitioned from a given media item index to another with the same media item for discontinuity reason AUTO and SEEK (#2997).
UI:
- Add PlaybackSpeedControl Composable to media3-ui-compose for displaying and modifying playback speed.
- Add PlaybackSpeedToggleButton Composable to media3-ui-compose-material3 for controlling playback speed.
- Add ProgressSlider Composable to media3-ui-compose-material3 for displaying player progress and performing seeks using dragging and tapping (#2288).
- Avoid large offscreen buffer in animating PlayerControlView.
HLS extension:
- Support X-PLAYOUT-LIMIT with HLS interstitials (#2484).
- Support the QUERYPARAM attribute with #EXT-X-DEFINE (#1854).
- Optimize HLS playlist parsing by caching regex Matchers (#3008).
Cast extension:
- Add RemoteCastPlayer.Builder#setTrackSelector method that enables the implementation of track selection for Cast playbacks.
Remove deprecated symbols:
- Removed ExperimentalFrameExtractor. Use androidx.media3.inspector.frame.FrameExtractor instead.
- Removed ChannelMixingMatrix.create(). Use ChannelMixingMatrix.createForConstantGain() instead.

1.9.2

2026-02-06T11:36:49Z

ExoPlayer:
- Fix bug where ProgressiveMediaSource propagates out-of-date timeline info to player and the queued periods unexpectedly get removed (#3016).
Session:
- Fix issue where system UI button placement workaround negatively affects other UI surface like Android Auto or manufacturers not needing the workaround (#3041).
Cast extension:
- Fix bug where transferring from Cast to local playback was broken.

1.9.1

2026-02-06T10:37:47Z

Common Library:
- Support date-time strings with only hours in the timezone offset (#2929).
ExoPlayer:
- Allow dynamic scheduling to slow doSomeWork interval only after audio starts to support smoother A/V sync at beginning of playback.
- Fix bug in DefaultLoadErrorHandlingPolicy where FileNotFoundException and similar exception types were retried multiple times.
- Fix bug with dynamic scheduling where the calculated time for the next doSomeWork was mistakenly reduced by the elapsed time of the current iteration of doSomeWork. Addressing this hopefully extends CPU idle time and saves power.
- Fix issue where some playbacks of Dolby Vision files fail when attempting to use a fallback AVC or HEVC codec.
- Fix bug where loading continues after playback ended when removing the currently playing item from a playlist (#2873).
- Avoid leaking MediaItem instances when repeatedly using ExoPlayer.replaceMediaItem on the same item (#2993).
- Prevent potential ANRs caused by emergency wake lock releases (#2979).
Extractors:
- MP3: Parse LAME ReplayGain data (#2840).
Audio:
- Correctly remove support for AC4Profile22 and other legacy profiles when assessing AC-4 decoder support in Automotive scenarios (#2609).
Video:
- Discard video codecs on devices below API 30 when the content frame rate changes to avoid stuttering playback (#2941).
Text:
- VobSub: Fix some missing subtitles by correctly handling SPUs that either contain only a single control sequence, or have critical info split across multiple control sequences (#2935).
IMA extension:
- Bug fix: Corrected an issue where the ad MIME type did not match the MIME type provided in the IMA LOADED event. The fix now maps the ad MIME type using the ad pod index and ad position.
- Add a null check before accessing result of getAdsManager() and AdEvent.getAd().
Session:
- Fix bug where stopping a MediaController connected to a platform session crashed the app if stop happened during ad playback (#2948).
- Add additional verifications on extras Bundle instances in various classes to guard against malformed Bundle instances sent from other processes.
- Fix issue where missing commands for COMMAND_SEEK_NEXT or COMMAND_SEEK_BACK can cause gaps in the system media notification (#2976).
- Move bitmap scaling for notification icon off the main thread (#2829).
- Fix bug where author, writer and composer were not used as a fallback when converting from legacy MediaMetadataCompat and MediaDescriptionCompat (#3018).
Downloads:
- Fix potential infinite loops when a PriorityTooLowException is handled by SegmentDownloader (for DASH, HLS and SmoothStreaming). Custom overrides of SegmentDownloader using the protected execute method need to provide their task wrapped in a Supplier so it can be recreated (#2931).
HLS extension:
- Pass the raw asset list JSON document to Listener.onAssetListLoadCompleted callback. This is a breaking change in an unstable API that requires apps that implement this callback to add an additional argument of type JSONObject (#2950).
RTSP extension:
- Correctly handle RTP Packets with timestamps that wrap around (#2930).
Decoder extensions (FFmpeg, VP9, AV1, etc.):
- Fix potential NullPointerException that can occur when seeking prior to processing the first video frame (#2965).
Cast extension:
- Fix bug preventing the RemoteCastPlayer timeline from updating correctly when replacing the playlist.

1.9.0

2025-12-17T21:21:36Z

1.9.0 (2025-12-17)

Common Library:
- Update minSdk to 23 in line with other AndroidX libraries.
- Add PlayerTransferState, which facilitates transferring the playback state across Player instances.
- Add void mute() and void unmute() methods to Player that preserve and consequently restore Player's volume before and after setting it to zero.
- Publish utility classes WakeLockManager, WifiLockManager, AudioFocusManager, AudioBecomingNoisyManager and StuckPlayerDetector previously used by ExoPlayer internally to allow reuse for other players (#1893).
- Fix ForwardingPlayer listener handling when the underlying delegate player uses reference equality for comparing listener instances (#2675).
- Add a Player.listenTo suspending extension function in the media3-common-ktx library that specifies the particular Player.Events that should be acted upon.
- Fix a crash in BasePlayer.getBufferedPercentage resulting from integer overflow when the reported buffered position is implausibly much larger than the reported duration (#2750).
- Fix auto-detection of TrackGroup track type by not ignoring custom sample MIME type and falling back to using the potentially wrong track type from the container MIME type (#2860).
ExoPlayer:
- Add a stuck player detection that triggers a StuckPlayerException player error if the player seems stuck. This happens in the following cases, where each default timeout can be configured in ExoPlayer.Builder if required:
  - After 10 minutes of STATE_BUFFERING while trying to play and no buffering progress.
  - After 10 seconds of STATE_READY while trying to play and no playback progress.
  - After 1 minute of STATE_READY beyond the declared duration without reaching the end of the item.
  - After 10 minutes with a playback suppression reason while trying to play.
- Enable wake lock handling by default to fix issues with buffering during background playback. This is equivalent to setting ExoPlayer.Builder.setWakeMode to C.WAKE_MODE_LOCAL.
- Add listening logic to automatically update the virtual device ID when a change is reported to the Context originally passed to ExoPlayer.Builder.
- Add ExoPlayer.setVirtualDeviceId to manually update the virtual device ID obtained from the Context passed to ExoPlayer.Builder.
- Ensure renderers don't consume data from the next playlist item more than 10 seconds before the end of the current item.
- Add setSeekBackIncrementMs, setSeekForwardIncrementMs and setMaxSeekToPreviousPositionMs to ExoPlayer to update these settings after construction (#2736).
- Add pre-caching functionality in DefaultPreloadManager. Apps now can return DefaultPreloadManager.PreloadStatus.specifiedRangeCached(startPositionMs, durationMs) or DefaultPreloadManager.PreloadStatus.specifiedRangeCached(durationMs) via TargetPreloadStatusControl.getTargetPreloadStatus(T rankingData) to indicate that a media item needs to be pre-cached.
- Use pre-caching functionality of DefaultPreloadManager in shortform demo app.
- Add DefaultLoadControl.Builder setters for local playback and adjust default values of DefaultLoadControl to work well with a wide range of local files.
- Fix bug where setting an empty playlist can leave the player in STATE_READY or STATE_BUFFERING.
- Enhance the preload manager APIs:
  - Add addMediaItems(List<MediaItem>, List<T>) and addMediaSources(List<MediaSource>, List<T>) that add the media items or media sources in batch, and automatically call invalidate() afterwards.
  - Add removeMediaItems((List<MediaItem>) and removeMediaSources(List<MediaSource>) that remove the media items or media sources in batch, and make sure that preload manager does not start to preload or continue preloading any of them after removal.
  - Allow DefaultPreloadManager.setCurrentPlayingIndex(int) to invalidate itself automatically. Apps don't need to call invalidate() explicitly anymore after updating the current playing index.
- Add capability to skip keyframe reset for forward seeks within the same group of pictures while in scrubbing mode.
- Add DefaultLoadControl.Builder.setPlayerTargetBufferBytes(String, int) for apps to set a value of target buffer bytes for a player with the specified playerName. The DefaultLoadControl can now make decisions of each player separately based on its own allocated bytes and target buffer bytes.
- Add SkipInfo to the AdPlaybackState.AdGroup to carry skip information for each ad in the ad group.
- Fix bug where calling removeMediaItems(List) during playing a post-roll created a crash (#2746).
- Fix some stuttering in playlist playback where frames were mistakenly always set as the last sample and rendered.
- Enable retry path if player fails to generate audio session ID (#2382, #2678).
- Add support to control the total buffer bytes for the sources in DefaultPreloadManager to avoid total buffer bytes for preloading from growing arbitrarily. To use the default control logic, Apps can set the target buffer bytes for preloading via DefaultLoadControl.Builder.setPlayerTargetBufferBytes(String, int) for a playerName of PlayerId.Preload.name ("preload"), and inject the created DefaultLoadControl via DefaultPreloadManager.Builder.setLoadControl(LoadControl).
- Add cloneAndSet(int, int) to ShuffleOrder with a default implementation (#2834).
- Append content resume offset when skipping ad playback after seek adjustment or auto transition (#2484).
- Add API to set and observe codec parameters for audio and video tracks. This feature is implemented for MediaCodec based renderers and requires API 29+.
  - Use ExoPlayer.setAudioCodecParameters() and ExoPlayer.setVideoCodecParameters() to apply parameters.
  - Use ExoPlayer.addAudioCodecParametersChangeListener() and ExoPlayer.addVideoCodecParametersChangeListener() to listen for changes. Observing vendor-specific keys requires API 31+.
- Fix IllegalStateException caused by setting an empty media source after seeking to a non-zero position and then preparing the player with a non-empty media source.
- Fix bug where seeking into other media items while in scrubbing mode could cause IllegalStateException.
- Fix potential NullPointerException in DefaultPlaybackSessionManager (#2885).
- Enable improvements in seeking performance for eligible videos.
- Re-enable use of asynchronous decryption in MediaCodec on API 36+ where timeout issues with this platform API have been fixed (#1641).
- Change the default value of MediaCodecVideoRenderer.experimentalSetLateThresholdToDropDecoderInputUs to 15ms and enable more efficient dropping of video frames before decoding for eligible videos.
- Add maximum memory limit to the automatic memory calculation in DefaultLoadControl. This should only take effect if an excessive number of tracks get selected (#2860).
- Fix bug where, if playing in a playlist or repeat mode, seeking in scrub mode near the end could cause a seek to the next media item.
CompositionPlayer:
- Publish CompositionPlayer under a new @ExperimentalApi annotation to indicate it is available for experimentation, but is still under development. Some APIs are likely to change significantly in future releases, and there are known issues and limitations with some use-cases (some undocumented).
- Add support for COMMAND_SET_AUDIO_ATTRIBUTES and audio focus handling in CompositionPlayer.
- Add support for speed changing in secondary sequences in CompositionPlayer.
- Add support for EditedMediaItem.removeVideo.
Transformer:
- Use InAppMp4Muxer as default muxer.
- Add EditedMediaItem.Builder#setSpeed() and deprecate Effects#createExperimentalSpeedChangingEffects().
- Replace forceAudioTrack and forceVideoTrack with trackTypes in EditedMediaItemSequence.
Track Selection:
- Add TrackSelectionParameters.selectTextByDefault to prefer the selection of any text track without specifying other more specific preferences.
- Add preferredVideoLabels, preferredAudioLabels and preferredTextLabels in TrackSelectionParameters to specify a preference for tracks with a specific label, for example those read from HLS NAME tags (#1666).
Extractors:
- FLAC: Tighten header detection to reduce the chance of finding spurious headers in the encoded FLAC data, resulting in decoding errors (#558).
- MP3: Allow gaps between (and before) ID3 tags at the beginning of MP3 files (#811, #5718).
- MP3: Increase sniffing limit to 128kB to match the existing search limit for a sync byte (#2713).
- MP3: Change FLAG_ENABLE_INDEX_SEEKING to prefer seeking information from metadata headers (like Xing and VBRI) when available, falling back to index-based seeking if no other seeking information is present. This improves performance for files with seeking metadata (#2839).
- MP3: Change Mp3Extractor to default to a constant bitrate (CBR) assumption when no seeking metadata (e.g., Xing, VBRI) is found, even when FLAG_ENABLE_INDEX_SEEKING is set. This is based on the MP3 specification's history, where CBR was standard and VBR requires explicit headers. This improves immediate seekability for files without metadata at the cost of potential accuracy for VBR files lacking headers. Index seeking is now used as a fallback if the CBR assumption is not seekable (e.g., for streams of unknown length) (#2848).
- MP4: Disambiguate between audio/mpeg (MP3), audio/mpeg-L1 and audio/mpeg-L2 MIME types by peeking the layer value of the first sample before emitting a track format from the extractor (#2683).
- MP4: Improve sniffing efficiency of very large files by assuming a stbl box larger than 1MB implies the file must be non-fragmented (#2650).
- MP4: Add support for ©mvn (movement name) and ©mvi (movement index) metadata, these are now emitted as TextInformationFrame objects in Format.metadata with IDs of MVNM and MVIN respectively (#2754).
- MP4: Ignore tracks with missing stsd box (instead of failing to parse the whole file).
- Matroska: Add support for DTS-HD detection (#6225).
- Fix an issue in MatroskaExtractor where seeking could be inaccurate for files with multiple tracks. Cue points are now correctly associated with their respective tracks, leading to more precise seeking.
- MPEG-TS: Fix IllegalArgumentException from ReorderingBufferQueue caused by PES packets with no timestamp (#2764).
- Add support for extracting HEIC Motion Photos. The HeifExtractor can now parse HEIC files containing embedded video and audio tracks.
Inspector:
- Introduced a new :media3-inspector module to serve as the dedicated home for media inspection utilities. This module now houses a new androidx.media3.inspector.MetadataRetriever, which will provide a unified API for both metadata and frame extraction. The existing androidx.media3.exoplayer.MetadataRetriever is now deprecated in favor of this new version.
- Introduced androidx.media3.inspector.FrameExtractor, a new public API for frame extraction. This AutoCloseable class provides a way to extract frames with support for HDR video, video effects, and custom decoder selection. It should be created via its Builder for a specific MediaItem.
- FrameExtractor: Add getThumbnail() to extract a representative thumbnail frame from a media file without requiring a specific timestamp.
- Add androidx.media3.inspector.MediaExtractorCompat, a drop-in replacement for the platform's android.media.MediaExtractor that provides a way to extract raw, encoded media samples from a media file. The existing androidx.media3.exoplayer.MediaExtractorCompat is now deprecated in favor of this new class.
Audio:
- Make AudioProcessor instances aware of seeking.
- Allow injecting the new AudioOutputProvider interface into DefaultAudioSink.Builder to support custom audio output paths. The default is AudioTrackAudioOutputProvider.
- Handle seeks in GainProcessor.
- Utilize AC-4 decoder profile and level capabilities in track format support assessment (#2580).
- Avoid potential delays caused by handling routing change callbacks at the beginning of playback (#2646).
- Allow codec reuse for EAC3, EAC3-JOC and AC-4 formats (#1346).
- Add support for float PCM samples in Sonic.
- Add support for 16 bit PCM samples in ToFloatPcmAudioProcessor.
Video:
- Disable codec reuse for Dolby-Vision content with different profiles.
- Re-enable workaround for wrongly reported performance points for secure codecs (#2856).
Text:
- Fix parsing of CEA-6/708 subtitles in Dolby Vision content (#2775).
Image:
- Fix ScrubbingMode issue where player gets stuck while scrubbing a DASH thumbnail track (#2815).
DRM:
- Change the return type of MediaDrmCallback methods from byte[] to a new MediaDrmCallback.Response type, to allow returning extra optional information. This is a source breaking change, but breakages can be easily resolved by wrapping the previous byte[] return value with new Response before returning.
- Add key request info like URL and latency to AnalyticsListener.onDrmKeysLoaded (#1001).
- Move provisioning request data from a URL parameter to the POST body.
Effect:
- Add Presentation.copyWithUnsetSideRoundedTo to round the unset output side when Presentation is created with a single side length.
Muxers:
- Add MediaMuxerCompat, a drop-in replacement for framework MediaMuxer.
- Add MuxerUtil.createMotionPhotoFromJpegImageAndBmffVideo() to allow Motion Photo creation.
- Add WebmMuxer to allow muxing of OPUS, VORBIS, VP8 and VP9 media streams into a webm file format.
IMA extension:
- Removal of custom proguard rules, so that apps can use those released in IMA android archive instead.
- Add ImaServerSideAdInsertionUriBuilder.setNetworkCode, a new API for setting the Google Ad Manager network code for the IMA SDK to handle ads identifiers as specified in Google Ad Manager settings. Network codes are optional but recommended for Full service stream requests. To find the network code, see this article.
- Bump IMA dependency to 3.37.0 which requires enabling core library desugaring. This must also be enabled by dependent apps too. See IMA's config notes.
- Support IMA DAI custom UI options in SSAI URI builder. Custom UI options for server side ad insertion include “Skippable” and “About This Ad” rendering support. The feature is currently available for selected publishers behind an allow list. This change also upgrades the IMA SDK version to 3.38.0 (release notes) to access the custom UI options API.
- Fix issue where content preparation error for content after an ad would be wrongly reported as an ad playback error (#2656).
Session:
- Add new parameter to MediaSession.Callback.onPlaybackResumption to indicate if the call happens to gather information only or to start playback (#1764).
- Update MediaSession.ControllerInfo.isTrusted to also declare controllers from the own app as trusted (#2542).
- Add MediaSessionService.triggerNotificationUpdate to manually trigger a notification update (#1833).
- Add ProgressListener to custom command methods.
- Change the default value for MediaLibrarySession.Builder.setLibraryErrorReplicationMode to non fatal.
- Add a Context parameter to MediaButtonReceiver.onForegroundServiceStartNotAllowedException (#2625).
- Read the volume control ID from the platform PlaybackInfo instead of fetching it via binder. This ensures that playback type and volume control ID are read atomically and do match to each other.
- Fix bug where ACTION_UP key events were filtered out before passing them to the callback for custom handling. This brings parity with what media1 did and the platform does (#2637).
- Fix bug where getCurrentTimeline() was called by PlayerWrapper even when the command isn't available (#2665).
- Fix bug where a message was left in the message queue of the main looper which caused a memory leak after the service terminated (#2692).
- When connected to a legacy session app with a MediaBrowser, custom commands are sent to the session only if the custom action is advertised as a custom action in PlaybackStateCompat of the legacy session. All other custom actions are sent to the service.
- Implemented onAudioSessionIdChanged to notify media controllers when an audio session ID is set by the session (#244).
- Fix bug where KEYCODE_HEADSETHOOK did not start the player upon and media key event Intent arriving in onStartCommand(). This is fixed by handling 'KEYCODE_HEADSETHOOK' just like KEYCODE_MEDIA_PLAY_PAUSE (#2816).
- Fix a bug where Surface size was not communicated between the session and the controller, resulting in the failure to apply video effects in demo-session. If you are using a controller, this might be a breaking change if your player cannot handle a setVideoSurfaceHolder call.
- Fix propagation of non-String CharSequence metadata values like span-styled strings (#2853).
- Add CommandButton.executeAction so that controllers can more easily trigger the intended action. Also allow to specify parameters for some player and session commands to define which action to trigger.
- Add backwards-compatibility for CommandButton instances using Player.Command or non-custom SessionCommand to define their action. These are now correctly represented in platform media sessions, for example for System UI or Android Auto.
- Fix issue where the same Bitmap is compressed multiple times when connecting a MediaController to a platform media session.
UI:
- Add ProgressStateWithTickInterval class and the corresponding rememberProgressStateWithTickInterval Composable to media3-ui-compose module. This state holder is used in demo-compose to display the current position and duration in text form.
- Add MuteButtonState to ui-compose that handles muting of the Player volume. This state holder is used in demo-compose to display mute/unmute toggle button.
- Add ProgressStateWithTickCount classes and the corresponding rememberProgressStateWithTickCount Composable to media3-ui-compose module. This state holder is used in demo-compose to display progress as a horizontal read-only progress bar.
- Add ContentFrame Composable to media3-ui-compose which combines PlayerSurface management with aspect ratio resizing and covering with a shutter.
- Work around a known API 34 platform bug causing stretched/cropped videos when using SurfaceView inside a Compose AndroidView and hence affecting ContentFrame and PlayerSurface Composables with SURFACE_TYPE_SURFACE_VIEW (#1237, #2811).
- Create a new media3-ui-compose-material3 module and add Material3-themed Composables (PlayPauseButton, NextButton, PreviousButton, SeekBackButton, SeekForwardButton, RepeatButton, ShuffleButton, MuteButton) to it.
- Add TimeText composable to media3-ui-compose-material3 for displaying player progress in a textual form. It can be configured to show the current position, duration, or remaining time.
- Add support for placing a media route button in the PlayerView.
- Use BidiFormatter to correctly display punctuation in RTL text subtitles (#11214).
HLS extension:
- Parse HLS interstitial skip attributes.
- Map skip control attributes from the HLS playlist and the asset list document into the AdPlaybackState for public access.
- Fix bug where the start time of the playlist was dropped when the EXT-X-PROGRAM-START-DATE tag defining the start time was removed from a playlist (#2760).
- Use binary search to find the segment index of a given position in the playlist (#2826).
- Add HlsInterstitialsAdsLoader.skipCurrentAd() and skipCurrentAdGroup() and corresponding methods to skip ads and ad groups by index.
- Add HlsInterstitialsAdsLoader.Listener.onAdStarted to report the start of an ad period (#2859).
- Accept space as a date/time separator in ISO 8601 date-time strings.
- Properly handle fetching the next chunk for an HlsMediaPlaylist with no segments (#2821).
- Use the default start position for pre rolls with live streams.
DASH extension:
- Fix UnsupportedOperationException when playing DASH streams with a non-hierarchical data: URI manifest (#2688).
- Reset LiveConfiguration to the value provided by the MediaItem of the DashMediaSource when released and when the media item is updated by the user (#2606).
- Avoid crashes caused by invalid manifest updates that were not reported as player errors (#2805).
RTSP extension:
- Handle error of missing RTP packets when processing fragmented NAL units for H264 and H265 (#2613).
Decoder extensions (FFmpeg, VP9, AV1, etc.):
- AV1 Extension: The AV1 software decoder now uses the high-performance dav1d library, replacing the previous libgav1 implementation for improved decoding speed.
- FFmpeg extension: Fix an issue that prevented some FLAC files from playing by ensuring the STREAMINFO block is correctly parsed and passed to the decoder (#2887).
Cast extension:
- Add CastPlayer.Builder, which enables CastPlayer to do both local and Cast playback. To keep the old CastPlayer behavior of supporting only Cast playback, you can use RemoteCastPlayer. The pre-existing CastPlayer constructors keep their old behavior, but are deprecated in favour of using the CastPlayer or RemoteCastPlayer builders instead.
- Stop enforcing a non-null mime type in DefaultMediaItemConverter.
- Use MediaItem.mediaMetadata.mediaType to infer the Cast MEDIA_TYPE to use in DefaultCastOptionsProvider#toMediaQueueItem, when available.
- Enable remote to local transfers in DefaultCastOptionsProvider.
- Add support for Cast in the Session demo.
- Add support for displaying a media route button on a Composable UI.
- Add support for displaying a media route button on an action bar menu.
- Add support for displaying a media route button as a View UI.
Test Utilities:
- Add maximum time diff for the auto-advancing behavior of FakeClock. It defaults to 1 second, but is configurable via FakeClock.Builder.
- Add maximum time diff between messages for RobolectricUtil.runMainLooperUntil (and runLooperUntil). It defaults to 1 second, but is configurable via new overloads of these methods.
- Move CapturingRenderersFactory from test-utils to test-utils-robolectric.
Remove deprecated symbols:
- Remove deprecated DefaultPreloadManager constructor. Use DefaultPreloadManager.Builder instead.
- Removed deprecated EditedMediaItemSequence constructors. Use EditedMediaItemSequence.Builder instead.
- Remove BitmapFactoryImageDecoder.BitmapDecoder. Use ExternallyLoadedImageDecoder instead.
- Remove deprecated ShadowMediaCodecConfig.forAllSupportedMimeTypes(). Use ShadowMediaCodecConfig.withAllDefaultSupportedCodecs() instead.
- Remove deprecated ShadowMediaCodecConfig.withNoDefaultSupportedMimeTypes(). Use ShadowMediaCodecConfig.withNoDefaultSupportedCodecs() instead.

1.9.0-rc01

2025-12-04T10:36:35Z

Common Library:
- Fix auto-detection of TrackGroup track type by not ignoring custom sample MIME type and falling back to using the potentially wrong track type from the container MIME type (#2860).
ExoPlayer:
- Add API to set and observe codec parameters for audio and video tracks. This feature is implemented for MediaCodec based renderers and requires API 29+.
  - Use ExoPlayer.setAudioCodecParameters() and ExoPlayer.setVideoCodecParameters() to apply parameters.
  - Use ExoPlayer.addAudioCodecParametersChangeListener() and ExoPlayer.addVideoCodecParametersChangeListener() to listen for changes. Observing vendor-specific keys requires API 31+.
- Fix IllegalStateException caused by setting an empty media source after seeking to a non-zero position and then preparing the player with a non-empty media source.
- Fix bug where seeking into other media items while in scrubbing mode could cause IllegalStateException.
- Fix potential NullPointerException in DefaultPlaybackSessionManager (#2885).
- Enable improvements in seeking performance for eligible videos.
- Re-enable use of asynchronous decryption in MediaCodec on API 36+ where timeout issues with this platform API have been fixed (#1641).
- Change the default value of MediaCodecVideoRenderer.experimentalSetLateThresholdToDropDecoderInputUs to 15ms and enable more efficient dropping of video frames before decoding for eligible videos.
- Add maximum memory limit to the automatic memory calculation in DefaultLoadControl. This should only take effect if an excessive number of tracks get selected (#2860).
- Fix bug where, if playing in a playlist or repeat mode, seeking in scrub mode near the end could cause a seek to the next media item.
Extractors:
- MP3: Change Mp3Extractor to default to a constant bitrate (CBR) assumption when no seeking metadata (e.g., Xing, VBRI) is found, even when FLAG_ENABLE_INDEX_SEEKING is set. This is based on the MP3 specification's history, where CBR was standard and VBR requires explicit headers. This improves immediate seekability for files without metadata at the cost of potential accuracy for VBR files lacking headers. Index seeking is now used as a fallback if the CBR assumption is not seekable (e.g., for streams of unknown length) (#2848).
Inspector:
- Add androidx.media3.inspector.MediaExtractorCompat, a drop-in replacement for the platform's android.media.MediaExtractor that provides a way to extract raw, encoded media samples from a media file. The existing androidx.media3.exoplayer.MediaExtractorCompat is now deprecated in favor of this new class.
Session:
- Add backwards-compatibility for CommandButton instances using Player.Command or non-custom SessionCommand to define their action. These are now correctly represented in platform media sessions, for example for System UI or Android Auto.
- Fix issue where the same Bitmap is compressed multiple times when connecting a MediaController to a platform media session.
HLS extension:
- Properly handle fetching the next chunk for an HlsMediaPlaylist with no segments (#2821).
- Use the default start position for pre rolls with live streams.
Decoder extensions (FFmpeg, VP9, AV1, etc.):
- FFmpeg extension: Fix an issue that prevented some FLAC files from playing by ensuring the STREAMINFO block is correctly parsed and passed to the decoder (#2887).
Remove deprecated symbols:
- Remove BitmapFactoryImageDecoder.BitmapDecoder. Use ExternallyLoadedImageDecoder instead.
- Remove deprecated ShadowMediaCodecConfig.forAllSupportedMimeTypes(). Use ShadowMediaCodecConfig.withAllDefaultSupportedCodecs() instead.
- Remove deprecated ShadowMediaCodecConfig.withNoDefaultSupportedMimeTypes(). Use ShadowMediaCodecConfig.withNoDefaultSupportedCodecs() instead.

1.9.0-beta01

2025-11-20T10:45:56Z

ExoPlayer:
- Add cloneAndSet(int, int) to ShuffleOrder with a default implementation (#2834).
- Append content resume offset when skipping ad playback after seek adjustment or auto transition (2484).
Extractors:
- MP3: Increase sniffing limit to 128kB to match the existing search limit for a sync byte (#2713).
Video:
- Re-enable workaround for wrongly reported performance points for secure codecs (#2856).
Effect:
- Add Presentation.copyWithUnsetSideRoundedTo to round the unset output side when Presentation is created with a single side length.
IMA extension:
- Fix issue where content preparation error for content after an ad would be wrongly reported as an ad playback error (#2656).
Session:
- Add CommandButton.executeAction so that controllers can more easily trigger the intended action. Also allow to specify parameters for some player and session commands to define which action to trigger.
UI:
- Use BidiFormatter to correctly display punctuation in RTL text subtitles (#11214).
- Add TimeText composable to media3-ui-compose-material3 for displaying player progress in a textual form. It can be configured to show the current position, duration, or remaining time.
HLS extension:
- Add HlsInterstitialsAdsLoader.skipCurrentAd() and skipCurrentAdGroup() and corresponding methods to skip ads and ad groups by index.
- Add HlsInterstitialsAdsLoader.Listener.onAdStarted to report the start of an ad period (#2859).
- Accept space as a date/time separator in ISO 8601 date-time strings.