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feat(docs-i18n): translate all documentation into 20 languages
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.
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description: "将视频音频音量归一化到广播标准。"
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i18n_source_hash: 078f1e819c9a
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i18n_provenance: human
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i18n_output_hash: 3523e302d9c6
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---
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# Normalize Audio {#normalize-audio}
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将视频音频音量归一化到 EBU R128 广播响度标准。
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## API Endpoint {#api-endpoint}
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`POST /api/v1/tools/video/video-loudnorm`
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接受包含视频文件的 multipart 表单数据。此工具没有可配置的设置。
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## Parameters {#parameters}
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此工具没有参数。它会对音轨应用 EBU R128 响度归一化。
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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/video-loudnorm \
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-H "Authorization: Bearer si_your-api-key" \
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-F "file=@clip.mp4"
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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.mp4",
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"originalSize": 12500000,
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"processedSize": 12500000
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}
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```
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## Notes {#notes}
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- 使用 FFmpeg 的 `loudnorm` 滤镜,目标为 -16 LUFS 综合响度、-1.5 dBTP 真峰值和 11 LU 响度范围(EBU R128 广播标准)。
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- 源音频采样率会在输出中保留。
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- 如果视频没有音轨,请求将返回 400 错误。
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