fix: Unable to generate video thumbnails (#8696)

* fix: Unable to generate video thumbnails

* CHANGELOG

CHANGELOG.md

@@ -37,6 +37,7 @@ You should also include the user name that made the change.
 - Server: fix internal in-memory caching @Johann150
 - Server: use correct order of attachments on notes @Johann150
 - Server: prevent crash when processing certain PNGs @syuilo
+- Server: Fix unable to generate video thumbnails @mei23
 
 ## 12.110.1 (2022/04/23)
 

packages/backend/src/services/drive/generate-video-thumbnail.ts

 import * as fs from 'node:fs';
 import * as tmp from 'tmp';
 import { IImage, convertToJpeg } from './image-processor.js';
-import * as FFmpeg from 'fluent-ffmpeg';
+import FFmpeg from 'fluent-ffmpeg';
 
 export async function GenerateVideoThumbnail(path: string): Promise<IImage> {
 	const [outDir, cleanup] = await new Promise<[string, any]>((res, rej) => {