Audio converter

Media

Convert audio between MP3, OGG, Opus, M4A, WAV and FLAC. Trim it, make it mono, or change the sample rate.

What it does

The audio track of an MP4 or WebM video works too, so it doubles as a way to pull the sound out of a clip.

POST https://bloodweb.net/api/v1/audio-convert

curl -H "Authorization: Bearer YOUR_KEY" -F file=@voice.wav -F to=mp3 -F bitrate=128 https://bloodweb.net/api/v1/audio-convert -o voice.mp3

Name	Description
`file` file	The audio, up to 50MB and 30 minutes: mp3, wav, ogg, flac, m4a, mp4, aac, webm (the audio track of an MP4 or WebM is used).
`to` required	Output format. One of: mp3, ogg, opus, m4a, wav, flac
`bitrate`	kbps, for MP3, OGG, Opus and M4A. 128 is fine for speech, 192 or more for music. Default: 192
`channels`	Keep the channels, or mix to mono or stereo. One of: keep, mono, stereo Default: keep
`sample_rate`	Hz. Opus only takes 8000, 16000, 24000 or 48000; other values become 48000. One of: keep, 8000, 16000, 22050, 24000, 32000, 44100, 48000 Default: keep
`start`	Start at this many seconds in.
`duration`	Keep this many seconds.
`normalize`	Even out the loudness to -16 LUFS, the usual level for podcasts and voice. Default: false
`fade_in`	Fade in over this many seconds.
`fade_out`	Fade out over this many seconds at the end.

The converted audio. X-Duration gives its length in seconds.