Comprehensive audio editing with one operation — the audio counterpart of Edit Video. Trim the audio, apply fades, adjust loudness, and change the format, bitrate and sample rate of the input audio.
Send the audio source together with an export object describing the output you want. For example, {"audio_url": "https://example.com/input.wav", "export": {"format": "mp3", "bitrate": 192, "sample_rate": 44100}} produces a 192 kb/s, 44.1 kHz MP3. Leave bitrate empty to let the service pick an optimal value, and omit sample_rate unless you need a specific one.
Trim with start / end (both in milliseconds), and shape the edges with fade_in / fade_out or trim_silence. Set loudness with either volume (a dB offset) or normalize (a -16 LUFS broadcast target). Two pairs are mutually exclusive: trim_silence cannot be combined with fade_out, and normalize cannot be combined with volume.