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SnapOtter
8532f3227b
Reconcile every tool page's parameters, defaults, and response shape against the tool's Zod settings schema and executionHint in code. Notable fixes: color-palette (add count + format params, hex output, median-cut algorithm), favicon (add 5 params, was documented as having none), qr-generate (add logoDataUri), convert (add ppm/eps/tga formats), video-loudnorm (-16 LUFS not -14), smart-crop (async 202 not sync 200), images-to-video (1080x1080 square), and several output-filename and behavior-note corrections. Also normalize API endpoint paths to /api/v1/tools/<id> (no modality segment) and standardize curl examples on the Docker API port 1349. Verified with a clean docs build.
46 lines
1.2 KiB
Markdown
46 lines
1.2 KiB
Markdown
---
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description: Pull the audio track out of a video.
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---
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# Extract Audio
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Extract the audio track from a video file and save it as MP3, WAV, or M4A.
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## API Endpoint
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`POST /api/v1/tools/extract-audio`
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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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| format | string | No | `"mp3"` | Output audio format: `mp3`, `wav`, `m4a` |
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## Example Request
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```bash
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curl -X POST http://localhost:1349/api/v1/tools/extract-audio \
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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={"format": "mp3"}'
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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.mp3",
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"originalSize": 12500000,
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"processedSize": 3200000
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}
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```
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## Notes
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- If the video has no audio track, the request returns a 400 error.
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- MP3 is lossy but widely compatible. WAV is lossless but large. M4A (AAC) offers a good balance of quality and size.
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- When the source audio is already AAC and the output format is M4A, the audio stream is copied without re-encoding.
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