mcut SDK

mcut SDK / media/src / extractAudioToWav

Function: extractAudioToWav()

function extractAudioToWav(src, options?): Promise<Blob | null>;

Defined in: packages/media/src/extract-audio.ts:76

Extract a file's audio track to a PCM WAV blob, fully client-side. Returns null when the file has no audio track. The default 16 kHz/mono output keeps uploads to transcription APIs small.

Resilience: when the resampled conversion fails (Mediabunny's resampler / channel mixer can throw "Assertion failed." on unusual source layouts), retry once WITHOUT resampling — the WAV is bigger but transcription APIs accept any PCM rate. Undecodable codecs fail fast with a clear error.

Parameters

src

MediaSourceLike

options?

ExtractAudioOptions = {}

Returns

Promise<Blob | null>