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SnapOtter/apps/docs/zh-CN/tools/video/video-speed.md
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SnapOtterandGitHub 4963ab3bbd 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: "加快或放慢视频速度。"
i18n_source_hash: 98dfc75c0507
i18n_provenance: human
i18n_output_hash: dbdc2ed96092
---
# Video Speed {#video-speed}
加快或放慢视频速度,并可选择保留音频音调。
## API Endpoint {#api-endpoint}
`POST /api/v1/tools/video/video-speed`
接受包含视频文件和 JSON `settings` 字段的 multipart 表单数据。
## Parameters {#parameters}
| Parameter | Type | Required | Default | Description |
|-----------|------|----------|---------|-------------|
| factor | number | No | `2` | 速度倍数(0.25-4)。大于 1 加速,小于 1 减速 |
| keepPitch | boolean | No | `true` | 改变速度时保留音频音调 |
## Example Request {#example-request}
```bash
curl -X POST http://localhost:1349/api/v1/tools/video/video-speed \
-H "Authorization: Bearer si_your-api-key" \
-F "file=@clip.mp4" \
-F 'settings={"factor": 0.5, "keepPitch": true}'
```
## Example Response {#example-response}
```json
{
"jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
"downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/clip.mp4",
"originalSize": 12500000,
"processedSize": 24800000
}
```
## Notes {#notes}
- `2` 的倍数会使播放速度加倍(时长减半)。`0.5` 的倍数会使播放速度减半(时长加倍)。
-`keepPitch``true` 时,音频会被时间拉伸,使人声听起来自然。当为 `false` 时,音调会随速度成比例变化。
- 有效范围为 0.25x 到 4x。