Changelog

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All notable changes to mob_media are documented here.

Format: Keep a Changelog. Versioning: SemVer.

[Unreleased]

[0.1.0] - 2026-10-18

Added

  • MobMedia.info/2: duration, shown video size (rotation applied), which tracks a file has, and its MIME type. Android MediaExtractor + MediaMetadataRetriever, iOS AVURLAsset.
  • MobMedia.audio_pcm/2: the first audio track of an audio file or a video, decoded to signed 16-bit little-endian PCM at rate: (default 16 kHz) and channels: (default mono), the format MobWhisper.transcribe/2 takes. Android MediaExtractor + MediaCodec with the conversion in MobMedia.PCM; iOS AVAssetReader LinearPCM output settings. The native side streams to a file; to: keeps the PCM in a file for long recordings.
  • MobMedia.frame/3: the exact video frame at a time as a JPEG, upright, scaled to max_px: at quality:. Android MediaMetadataRetriever, iOS AVAssetImageGenerator.
  • Every call blocks only its caller; decoding runs on native threads, never a BEAM scheduler. timeout: on every call.
  • MobMedia.Engine.Fake for host tests (real WAV decoding, scripted answers), MobMedia.SelfTest for mix mob.selftest, MobMedia.DemoScreen at /mob_media/demo.