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SnapOtter/apps/docs/tools/video/trim-video.md
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SnapOtter d24e244af4 docs: organize tool pages by modality under /tools/<modality>/
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---
description: Cut a clip out of a video by specifying start and end times.
---
# Trim Video
Cut a clip out of a video by specifying start and end times in seconds, with an option for frame-accurate cuts.
## API Endpoint
`POST /api/v1/tools/video/trim-video`
Accepts multipart form data with a video file and a JSON `settings` field.
## Parameters
| Parameter | Type | Required | Default | Description |
|-----------|------|----------|---------|-------------|
| startS | number | No | `0` | Start time in seconds (must be >= 0) |
| endS | number | Yes | - | End time in seconds (must be after startS) |
| precise | boolean | No | `false` | Re-encode for frame-accurate cuts instead of keyframe seek |
## Example Request
```bash
curl -X POST http://localhost:1349/api/v1/tools/video/trim-video \
-H "Authorization: Bearer si_your-api-key" \
-F "file=@clip.mp4" \
-F 'settings={"startS": 5, "endS": 30, "precise": true}'
```
## Example Response
```json
{
"jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
"downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/clip.mp4",
"originalSize": 12500000,
"processedSize": 4200000
}
```
## Notes
- When `precise` is `false` (the default), the tool uses keyframe seeking, which is fast but may start a few frames before the requested time.
- Setting `precise` to `true` re-encodes the segment for exact frame boundaries, but takes longer.
- The `endS` value must be greater than `startS`.