v0.5.0

WAV Conversion Parameters

convertToWav and convertToWavBytes now accept optional sampleRate, channels, and bitDepth parameters, giving full control over WAV output encoding. When omitted, the source sample rate and channels are preserved with 16-bit depth (existing behavior).

// Convert to mono 44.1kHz 24-bit WAV
final path = await AudioDecoder.convertToWav(
  'input.mp3', 'output.wav',
  sampleRate: 44100,
  channels: 1,
  bitDepth: 24,
);

// Same for in-memory bytes
final wavBytes = await AudioDecoder.convertToWavBytes(
  mp3Bytes,
  formatHint: 'mp3',
  sampleRate: 22050,
  channels: 1,
  bitDepth: 16,
);

Supported values

Parameter	Values	Default
sampleRate	Any valid rate (e.g. 8000, 22050, 44100, 48000)	Source sample rate
channels	1 (mono), 2 (stereo), or more	Source channel count
bitDepth	8, 16, 24, 32	16

Platform implementation

Platform	Approach
iOS / macOS	AVAssetReader output settings
Android	Manual PCM resampling, channel conversion, bit depth conversion
Windows	Media Foundation media type attributes
Linux	GStreamer capsfilter
Web	OfflineAudioContext + manual encoding

Full Changelog: v0.4.0...v0.5.0