• ExoPlayer:
  • Add luma and chroma bitdepth to ColorInfo #491.
• Track Selection:
  • Add DefaultTrackSelector.Parameters.allowAudioNonSeamlessAdaptiveness to explicitly allow or disallow non-seamless adaptation. The default stays at its current behavior of true.
• Audio:
  • Fix DTS Express audio buffer underflow issue (#650).
  • Fix bug where the capabilities check for E-AC3-JOC throws an IllegalArgumentException (#677).
• Text:
  • Remove ExoplayerCuesDecoder. Text tracks with sampleMimeType = application/x-media3-cues are now directly handled by TextRenderer without needing a SubtitleDecoder instance.
• Session:
  • Do not set the queue of the framework session when COMMAND_GET_TIMELINE is not available for the media notification controller. With Android Auto as the client controller reading from the framework session, this has the effect that the queue button in the UI of Android Auto is not displayed ((#339).
  • Use DataSourceBitmapLoader by default instead of SimpleBitmapLoader (#271,#327).
  • Add MediaSession.Callback.onMediaButtonEvent(Intent) that allows apps to override the default media button event handling.
• HLS Extension:
  • Refresh the HLS live playlist with an interval calculated from the last load start time rather than the last load completed time (#663).
• DASH Extension:
  • Add experimental support for parsing subtitles during extraction. This has better support for merging overlapping subtitles, including resolving flickering when transitioning between subtitle segments. You can enable this using DashMediaSource.Factory.experimentalParseSubtitlesDuringExtraction() (#288).
• Decoder Extensions (FFmpeg, VP9, AV1, MIDI, etc.):
  • Fix bug publishing MIDI decoder artifact to Maven repository. The artifact is renamed to media3-exoplayer-midi (#734).
• Remove deprecated symbols:
  • Remove deprecated DownloadNotificationHelper.buildProgressNotification method, use a non deprecated method that takes a notMetRequirements parameter instead.