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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
Normalize video audio volume to broadcast standard.

Normalize Audio

Normalize video audio volume to the EBU R128 broadcast loudness standard.

API Endpoint

POST /api/v1/tools/video/video-loudnorm

Accepts multipart form data with a video file. This tool has no configurable settings.

Parameters

This tool has no parameters. It applies EBU R128 loudness normalization to the audio track.

Example Request

curl -X POST http://localhost:1349/api/v1/tools/video/video-loudnorm \
  -H "Authorization: Bearer si_your-api-key" \
  -F "file=@clip.mp4"

Example Response

{
  "jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/clip.mp4",
  "originalSize": 12500000,
  "processedSize": 12500000
}

Notes

Uses FFmpeg's two-pass loudnorm filter targeting -14 LUFS integrated loudness, the standard for streaming platforms.
The source audio sample rate is preserved in the output.
If the video has no audio track, the request returns a 400 error.

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