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Normalize Audio ​

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

API Endpoint ​

POST /api/v1/tools/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 ​

bash
curl -X POST http://localhost:1349/api/v1/tools/video-loudnorm \
  -H "Authorization: Bearer si_your-api-key" \
  -F "[email protected]"

Example Response ​

json
{
  "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 loudnorm filter targeting -16 LUFS integrated loudness with -1.5 dBTP true peak and 11 LU loudness range (EBU R128 broadcast standard).
  • The source audio sample rate is preserved in the output.
  • If the video has no audio track, the request returns a 400 error.