60 lines
1.4 KiB
TypeScript
60 lines
1.4 KiB
TypeScript
import { Inject, Injectable } from '@nestjs/common';
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import FFmpeg from 'fluent-ffmpeg';
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import { DI } from '@/di-symbols.js';
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import type { Config } from '@/config.js';
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import { ImageProcessingService } from '@/core/ImageProcessingService.js';
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import type { IImage } from '@/core/ImageProcessingService.js';
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import { createTempDir } from '@/misc/create-temp.js';
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import { bindThis } from '@/decorators.js';
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import { appendQuery, query } from '@/misc/prelude/url.js';
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@Injectable()
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export class VideoProcessingService {
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constructor(
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@Inject(DI.config)
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private config: Config,
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private imageProcessingService: ImageProcessingService,
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) {
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}
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@bindThis
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public async generateVideoThumbnail(source: string): Promise<IImage> {
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const [dir, cleanup] = await createTempDir();
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try {
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await new Promise((res, rej) => {
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FFmpeg({
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source,
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})
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.on('end', res)
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.on('error', rej)
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.screenshot({
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folder: dir,
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filename: 'out.png', // must have .png extension
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count: 1,
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timestamps: ['5%'],
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});
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});
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return await this.imageProcessingService.convertToWebp(`${dir}/out.png`, 498, 422);
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} finally {
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cleanup();
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}
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}
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@bindThis
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public getExternalVideoThumbnailUrl(url: string): string | null {
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if (this.config.videoThumbnailGenerator == null) return null;
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return appendQuery(
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`${this.config.videoThumbnailGenerator}/thumbnail.webp`,
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query({
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thumbnail: '1',
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url,
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})
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);
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}
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}
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