SnapOtter/apps/docs/tools/video/extract-audio.md

description

description
Pull the audio track out of a video.

Extract Audio

Extract the audio track from a video file and save it as MP3, WAV, M4A, or OGG.

API Endpoint

POST /api/v1/tools/video/extract-audio

Accepts multipart form data with a video file and a JSON settings field.

Parameters

Parameter	Type	Required	Default	Description
format	string	No	"mp3"	Output audio format: mp3, wav, m4a, ogg

Example Request

curl -X POST http://localhost:1349/api/v1/tools/video/extract-audio \
  -H "Authorization: Bearer si_your-api-key" \
  -F "file=@clip.mp4" \
  -F 'settings={"format": "mp3"}'

Example Response

{
  "jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/clip.mp3",
  "originalSize": 12500000,
  "processedSize": 3200000
}

Notes

• If the video has no audio track, the request returns a 400 error.
• MP3 is lossy but widely compatible. WAV is lossless but large. M4A (AAC) offers a good balance of quality and size. OGG is available for open codec workflows.
• When the source audio is already AAC and the output format is M4A, the audio stream is copied without re-encoding.