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SnapOtter d24e244af4 docs: organize tool pages by modality under /tools/<modality>/

Move all 157 tool pages into image/video/audio/pdf/data subfolders so URLs read /tools/<modality>/<id> (e.g. /tools/image/crop). Nest the image sub-categories under an Image group in the sidebar so the nav reads by modality. Add public/_redirects (301, clean + .html forms) mapping every old flat /tools/<id> URL to its new path so inbound links keep working. Rewrite all internal /tools links. Verified with a clean docs build (no dead links).

2026-06-18 14:12:28 +08:00

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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, or M4A.

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`

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.
When the source audio is already AAC and the output format is M4A, the audio stream is copied without re-encoding.

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