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46 lines
1.1 KiB
Markdown
46 lines
1.1 KiB
Markdown
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---
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description: Change the frame rate of a video.
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---
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# Change FPS
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Change the frame rate of a video to a target value between 1 and 120 fps.
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## API Endpoint
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`POST /api/v1/tools/change-fps`
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Accepts multipart form data with a video file and a JSON `settings` field.
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## Parameters
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| Parameter | Type | Required | Default | Description |
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|-----------|------|----------|---------|-------------|
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| fps | number | No | `30` | Target frame rate (1-120) |
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## Example Request
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```bash
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curl -X POST http://localhost:1349/api/v1/tools/change-fps \
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-H "Authorization: Bearer si_your-api-key" \
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-F "file=@clip.mp4" \
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-F 'settings={"fps": 24}'
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```
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## Example Response
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```json
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{
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"jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
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"downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/clip.mp4",
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"originalSize": 12500000,
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"processedSize": 10200000
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}
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```
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## Notes
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- Lowering the frame rate drops frames and reduces file size. Increasing it duplicates frames to fill the gap but does not add real motion detail.
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- Common target values: 24 (cinema), 30 (web/broadcast), 60 (smooth playback).
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- The audio track is preserved at its original sample rate.
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