Change an audio file's format
MP3, WAV, OGG, FLAC or M4A, at a bitrate you pick.
Drop a file here, or .
.mp3 · .wav · .ogg · .flac · .m4a · up to 4 MB · processed in memory and never stored · or paste with Ctrl+V
What it does
Also called: convert an audio format · turn wav into mp3 · change m4a to mp3.
Use it from your own code
The same endpoint this page calls — no daily cap, 5 credits a call either way.
POST /v1/media/audio-convert
curl -X POST "$DOATHING_API/v1/media/audio-convert" \
-H "x-api-key: $DOATHING_KEY" \
-H "content-type: application/json" \
-d '{"file": {"filename": "recording.mp3", "content_type": "audio/mpeg", "data_b64": "<base64>"}, "options": {"format": "flac"}}'
MP3, WAV, OGG, FLAC or M4A, at a bitrate you pick.
Transcode audio between mp3, wav, ogg, flac and m4a at a configurable bitrate and sample rate.
Input
Send a file object with base64 data_b64, its content_type and a filename. Accepted types: audio/mpeg, audio/wav, audio/ogg, audio/flac, audio/mp4.
The declared type is not trusted — the bytes are sniffed and a contradiction is rejected rather than corrected.
Response
The result carries your remaining balance alongside it, so you can track spend without a second call.
{
"format": "flac",
"duration_seconds": 184.32,
"channels": 2,
"sample_rate": 44100,
"request_id": "37f01edb-0163-42a1-ac51-0acaef979800",
"credits_remaining": 96
}
Cost
5 credits per call, whether it is run from the site or from the API — the credential differs, the price does not. A new account starts with 20 credits.
A rejected request still costs a credit: the authorizer decrements before the tool validates. A call rejected for a missing or invalid key is free.
Parameters
Generated from the endpoint’s own validation, so this is exactly what it accepts. A body field goes at the top level; an option goes inside options.
| Name | In | Type | Default | Notes |
|---|---|---|---|---|
| channels | options | integer | — | 1 to downmix to mono, or 2. one of 1, 2 |
| sample_rate | options | integer | — | 8000, 16000, 22050, 32000, 44100 or 48000. one of 8000, 16000, 22050, 32000, 44100, 48000 |
| format | options | string | "mp3" | mp3, wav, ogg, flac or m4a. one of mp3, wav, ogg, flac, m4a |
| bitrate | options | string | — | Such as 192k, for lossy formats. e.g. 64k, 96k, 128k, 160k |