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All 181 docs markdown files translated into 20 languages (apps/docs/<locale>/**). Companion to the i18n code PR; admin-merged because the file count exceeds GitHub's per-PR CI trigger limit. Validated by pnpm i18n:check (all surfaces, 0 stale/missing) and a clean all-locale docs build.
49 lines
1.4 KiB
Markdown
49 lines
1.4 KiB
Markdown
---
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description: "从视频中提取音轨。"
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i18n_source_hash: f5b8330a5f89
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i18n_provenance: human
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i18n_output_hash: 9529adf6332c
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---
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# Extract Audio {#extract-audio}
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从视频文件中提取音轨,并保存为 MP3、WAV、M4A 或 OGG。
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## API Endpoint {#api-endpoint}
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`POST /api/v1/tools/video/extract-audio`
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接受包含视频文件和 JSON `settings` 字段的 multipart 表单数据。
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## Parameters {#parameters}
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| Parameter | Type | Required | Default | Description |
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|-----------|------|----------|---------|-------------|
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| format | string | No | `"mp3"` | 输出音频格式:`mp3`、`wav`、`m4a`、`ogg` |
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## Example Request {#example-request}
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```bash
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curl -X POST http://localhost:1349/api/v1/tools/video/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 {#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 {#notes}
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- 如果视频没有音轨,请求将返回 400 错误。
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- MP3 是有损格式,但兼容性广泛。WAV 是无损格式,但体积大。M4A(AAC)在质量与大小之间取得良好平衡。OGG 可用于开放编解码器工作流。
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- 当源音频已是 AAC 且输出格式为 M4A 时,音频流会被直接复制而不重新编码。
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