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SnapOtter/apps/docs/tools/audio/trim-audio.md
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SnapOtter d24e244af4 docs: organize tool pages by modality under /tools/<modality>/
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---
description: Cut a section out of an audio file by specifying start and end times.
---
# Trim Audio
Cut a section out of an audio file by specifying start and end times in seconds.
## API Endpoint
`POST /api/v1/tools/audio/trim-audio`
Accepts multipart form data with an audio file and a JSON `settings` field.
## Parameters
| Parameter | Type | Required | Default | Description |
|-----------|------|----------|---------|-------------|
| startS | number | No | `0` | Start time in seconds (minimum 0) |
| endS | number | Yes | - | End time in seconds (must be after start) |
## Example Request
```bash
curl -X POST http://localhost:1349/api/v1/tools/audio/trim-audio \
-H "Authorization: Bearer si_your-api-key" \
-F "file=@audio.mp3" \
-F 'settings={"startS": 10, "endS": 45}'
```
## Example Response
```json
{
"jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
"downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/audio.mp3",
"originalSize": 4500000,
"processedSize": 1575000
}
```
## Notes
- Times are specified in seconds and can include decimals (e.g. `10.5`).
- The `endS` value must be greater than `startS`.
- If `endS` exceeds the audio duration, the file is trimmed to the end.
- Output format matches the input format.