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Translated 85 skill sub-reference files to achieve full parity with the English source: - skills/angular-developer/references/ — 35 files (all references) - skills/remotion-video-creation/rules/ — 28 files (all rules) - skills/tinystruct-patterns/references/ — 5 files - skills/openclaw-persona-forge/references/ — 6 files - skills/skill-comply/prompts/ — 3 files - skills/lead-intelligence/agents/ — 4 files - skills/brand-voice/references/ — 1 file - skills/frontend-slides/ — 2 files - hooks/memory-persistence/README.md — 1 file English source parity: 0 missing files (excluding rules/zh/, internal docs, and experimental examples absent from zh-CN)
59 lines
1.5 KiB
Markdown
59 lines
1.5 KiB
Markdown
---
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name: get-video-duration
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description: Mediabunnyを使ってビデオファイルの長さを秒単位で取得する
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metadata:
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tags: duration, video, length, time, seconds
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---
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# Mediabunnyを使ったビデオ長さの取得
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Mediabunnyはビデオファイルの長さを取得できます。ブラウザ、Node.js、Bun環境で動作します。
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## ビデオの長さを取得する
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```tsx
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import { Input, ALL_FORMATS, UrlSource } from "mediabunny";
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export const getVideoDuration = async (src: string) => {
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const input = new Input({
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formats: ALL_FORMATS,
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source: new UrlSource(src, {
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getRetryDelay: () => null,
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}),
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});
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const durationInSeconds = await input.computeDuration();
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return durationInSeconds;
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};
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```
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## 使用例
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```tsx
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const duration = await getVideoDuration("https://remotion.media/video.mp4");
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console.log(duration); // 例: 10.5 (秒)
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```
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## ローカルファイルで使用する
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ローカルファイルの場合、`UrlSource` の代わりに `FileSource` を使用します:
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```tsx
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import { Input, ALL_FORMATS, FileSource } from "mediabunny";
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const input = new Input({
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formats: ALL_FORMATS,
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source: new FileSource(file), // inputまたはドラッグ&ドロップのFileオブジェクト
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});
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const durationInSeconds = await input.computeDuration();
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```
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## RemotionのstaticFileと組み合わせて使用する
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```tsx
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import { staticFile } from "remotion";
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const duration = await getVideoDuration(staticFile("video.mp4"));
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```
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