misskey/src/services/drive/generate-video-thumbnail.ts

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import * as fs from 'fs';
import * as tmp from 'tmp';
const ThumbnailGenerator = require('video-thumbnail-generator').default;
export async function GenerateVideoThumbnail(path: string): Promise<Buffer> {
const [outDir, cleanup] = await new Promise<[string, any]>((res, rej) => {
tmp.dir((e, path, cleanup) => {
if (e) return rej(e);
res([path, cleanup]);
});
});
const tg = new ThumbnailGenerator({
sourcePath: path,
thumbnailPath: outDir,
});
await tg.generateOneByPercent(10, {
size: '498x280',
filename: 'output.png',
});
const outPath = `${outDir}/output.png`;
const buffer = fs.readFileSync(outPath);
// cleanup
fs.unlinkSync(outPath);
cleanup();
return buffer;
}