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-rw-r--r--server/helpers/youtube-dl.ts394
1 files changed, 0 insertions, 394 deletions
diff --git a/server/helpers/youtube-dl.ts b/server/helpers/youtube-dl.ts
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1import { createWriteStream } from 'fs'
2import { ensureDir, move, pathExists, remove, writeFile } from 'fs-extra'
3import { join } from 'path'
4import { CONFIG } from '@server/initializers/config'
5import { HttpStatusCode } from '../../shared/models/http/http-error-codes'
6import { VideoResolution } from '../../shared/models/videos'
7import { CONSTRAINTS_FIELDS, VIDEO_CATEGORIES, VIDEO_LANGUAGES, VIDEO_LICENCES } from '../initializers/constants'
8import { peertubeTruncate, pipelinePromise, root } from './core-utils'
9import { isVideoFileExtnameValid } from './custom-validators/videos'
10import { logger } from './logger'
11import { peertubeGot } from './requests'
12import { generateVideoImportTmpPath } from './utils'
13
14export type YoutubeDLInfo = {
15 name?: string
16 description?: string
17 category?: number
18 language?: string
19 licence?: number
20 nsfw?: boolean
21 tags?: string[]
22 thumbnailUrl?: string
23 ext?: string
24 originallyPublishedAt?: Date
25}
26
27export type YoutubeDLSubs = {
28 language: string
29 filename: string
30 path: string
31}[]
32
33const processOptions = {
34 maxBuffer: 1024 * 1024 * 10 // 10MB
35}
36
37class YoutubeDL {
38
39 constructor (private readonly url: string = '', private readonly enabledResolutions: number[] = []) {
40
41 }
42
43 getYoutubeDLInfo (opts?: string[]): Promise<YoutubeDLInfo> {
44 return new Promise<YoutubeDLInfo>((res, rej) => {
45 let args = opts || []
46
47 if (CONFIG.IMPORT.VIDEOS.HTTP.FORCE_IPV4) {
48 args.push('--force-ipv4')
49 }
50
51 args = this.wrapWithProxyOptions(args)
52 args = [ '-f', this.getYoutubeDLVideoFormat() ].concat(args)
53
54 YoutubeDL.safeGetYoutubeDL()
55 .then(youtubeDL => {
56 youtubeDL.getInfo(this.url, args, processOptions, (err, info) => {
57 if (err) return rej(err)
58 if (info.is_live === true) return rej(new Error('Cannot download a live streaming.'))
59
60 const obj = this.buildVideoInfo(this.normalizeObject(info))
61 if (obj.name && obj.name.length < CONSTRAINTS_FIELDS.VIDEOS.NAME.min) obj.name += ' video'
62
63 return res(obj)
64 })
65 })
66 .catch(err => rej(err))
67 })
68 }
69
70 getYoutubeDLSubs (opts?: object): Promise<YoutubeDLSubs> {
71 return new Promise<YoutubeDLSubs>((res, rej) => {
72 const cwd = CONFIG.STORAGE.TMP_DIR
73 const options = opts || { all: true, format: 'vtt', cwd }
74
75 YoutubeDL.safeGetYoutubeDL()
76 .then(youtubeDL => {
77 youtubeDL.getSubs(this.url, options, (err, files) => {
78 if (err) return rej(err)
79 if (!files) return []
80
81 logger.debug('Get subtitles from youtube dl.', { url: this.url, files })
82
83 const subtitles = files.reduce((acc, filename) => {
84 const matched = filename.match(/\.([a-z]{2})(-[a-z]+)?\.(vtt|ttml)/i)
85 if (!matched || !matched[1]) return acc
86
87 return [
88 ...acc,
89 {
90 language: matched[1],
91 path: join(cwd, filename),
92 filename
93 }
94 ]
95 }, [])
96
97 return res(subtitles)
98 })
99 })
100 .catch(err => rej(err))
101 })
102 }
103
104 getYoutubeDLVideoFormat () {
105 /**
106 * list of format selectors in order or preference
107 * see https://github.com/ytdl-org/youtube-dl#format-selection
108 *
109 * case #1 asks for a mp4 using h264 (avc1) and the exact resolution in the hope
110 * of being able to do a "quick-transcode"
111 * case #2 is the first fallback. No "quick-transcode" means we can get anything else (like vp9)
112 * case #3 is the resolution-degraded equivalent of #1, and already a pretty safe fallback
113 *
114 * in any case we avoid AV1, see https://github.com/Chocobozzz/PeerTube/issues/3499
115 **/
116 const resolution = this.enabledResolutions.length === 0
117 ? VideoResolution.H_720P
118 : Math.max(...this.enabledResolutions)
119
120 return [
121 `bestvideo[vcodec^=avc1][height=${resolution}]+bestaudio[ext=m4a]`, // case #1
122 `bestvideo[vcodec!*=av01][vcodec!*=vp9.2][height=${resolution}]+bestaudio`, // case #2
123 `bestvideo[vcodec^=avc1][height<=${resolution}]+bestaudio[ext=m4a]`, // case #3
124 `bestvideo[vcodec!*=av01][vcodec!*=vp9.2]+bestaudio`,
125 'best[vcodec!*=av01][vcodec!*=vp9.2]', // case fallback for known formats
126 'best' // Ultimate fallback
127 ].join('/')
128 }
129
130 downloadYoutubeDLVideo (fileExt: string, timeout: number) {
131 // Leave empty the extension, youtube-dl will add it
132 const pathWithoutExtension = generateVideoImportTmpPath(this.url, '')
133
134 let timer
135
136 logger.info('Importing youtubeDL video %s to %s', this.url, pathWithoutExtension)
137
138 let options = [ '-f', this.getYoutubeDLVideoFormat(), '-o', pathWithoutExtension ]
139 options = this.wrapWithProxyOptions(options)
140
141 if (process.env.FFMPEG_PATH) {
142 options = options.concat([ '--ffmpeg-location', process.env.FFMPEG_PATH ])
143 }
144
145 logger.debug('YoutubeDL options for %s.', this.url, { options })
146
147 return new Promise<string>((res, rej) => {
148 YoutubeDL.safeGetYoutubeDL()
149 .then(youtubeDL => {
150 youtubeDL.exec(this.url, options, processOptions, async err => {
151 clearTimeout(timer)
152
153 try {
154 // If youtube-dl did not guess an extension for our file, just use .mp4 as default
155 if (await pathExists(pathWithoutExtension)) {
156 await move(pathWithoutExtension, pathWithoutExtension + '.mp4')
157 }
158
159 const path = await this.guessVideoPathWithExtension(pathWithoutExtension, fileExt)
160
161 if (err) {
162 remove(path)
163 .catch(err => logger.error('Cannot delete path on YoutubeDL error.', { err }))
164
165 return rej(err)
166 }
167
168 return res(path)
169 } catch (err) {
170 return rej(err)
171 }
172 })
173
174 timer = setTimeout(() => {
175 const err = new Error('YoutubeDL download timeout.')
176
177 this.guessVideoPathWithExtension(pathWithoutExtension, fileExt)
178 .then(path => remove(path))
179 .finally(() => rej(err))
180 .catch(err => {
181 logger.error('Cannot remove file in youtubeDL timeout.', { err })
182 return rej(err)
183 })
184 }, timeout)
185 })
186 .catch(err => rej(err))
187 })
188 }
189
190 buildOriginallyPublishedAt (obj: any) {
191 let originallyPublishedAt: Date = null
192
193 const uploadDateMatcher = /^(\d{4})(\d{2})(\d{2})$/.exec(obj.upload_date)
194 if (uploadDateMatcher) {
195 originallyPublishedAt = new Date()
196 originallyPublishedAt.setHours(0, 0, 0, 0)
197
198 const year = parseInt(uploadDateMatcher[1], 10)
199 // Month starts from 0
200 const month = parseInt(uploadDateMatcher[2], 10) - 1
201 const day = parseInt(uploadDateMatcher[3], 10)
202
203 originallyPublishedAt.setFullYear(year, month, day)
204 }
205
206 return originallyPublishedAt
207 }
208
209 private async guessVideoPathWithExtension (tmpPath: string, sourceExt: string) {
210 if (!isVideoFileExtnameValid(sourceExt)) {
211 throw new Error('Invalid video extension ' + sourceExt)
212 }
213
214 const extensions = [ sourceExt, '.mp4', '.mkv', '.webm' ]
215
216 for (const extension of extensions) {
217 const path = tmpPath + extension
218
219 if (await pathExists(path)) return path
220 }
221
222 throw new Error('Cannot guess path of ' + tmpPath)
223 }
224
225 private normalizeObject (obj: any) {
226 const newObj: any = {}
227
228 for (const key of Object.keys(obj)) {
229 // Deprecated key
230 if (key === 'resolution') continue
231
232 const value = obj[key]
233
234 if (typeof value === 'string') {
235 newObj[key] = value.normalize()
236 } else {
237 newObj[key] = value
238 }
239 }
240
241 return newObj
242 }
243
244 private buildVideoInfo (obj: any): YoutubeDLInfo {
245 return {
246 name: this.titleTruncation(obj.title),
247 description: this.descriptionTruncation(obj.description),
248 category: this.getCategory(obj.categories),
249 licence: this.getLicence(obj.license),
250 language: this.getLanguage(obj.language),
251 nsfw: this.isNSFW(obj),
252 tags: this.getTags(obj.tags),
253 thumbnailUrl: obj.thumbnail || undefined,
254 originallyPublishedAt: this.buildOriginallyPublishedAt(obj),
255 ext: obj.ext
256 }
257 }
258
259 private titleTruncation (title: string) {
260 return peertubeTruncate(title, {
261 length: CONSTRAINTS_FIELDS.VIDEOS.NAME.max,
262 separator: /,? +/,
263 omission: ' […]'
264 })
265 }
266
267 private descriptionTruncation (description: string) {
268 if (!description || description.length < CONSTRAINTS_FIELDS.VIDEOS.DESCRIPTION.min) return undefined
269
270 return peertubeTruncate(description, {
271 length: CONSTRAINTS_FIELDS.VIDEOS.DESCRIPTION.max,
272 separator: /,? +/,
273 omission: ' […]'
274 })
275 }
276
277 private isNSFW (info: any) {
278 return info.age_limit && info.age_limit >= 16
279 }
280
281 private getTags (tags: any) {
282 if (Array.isArray(tags) === false) return []
283
284 return tags
285 .filter(t => t.length < CONSTRAINTS_FIELDS.VIDEOS.TAG.max && t.length > CONSTRAINTS_FIELDS.VIDEOS.TAG.min)
286 .map(t => t.normalize())
287 .slice(0, 5)
288 }
289
290 private getLicence (licence: string) {
291 if (!licence) return undefined
292
293 if (licence.includes('Creative Commons Attribution')) return 1
294
295 for (const key of Object.keys(VIDEO_LICENCES)) {
296 const peertubeLicence = VIDEO_LICENCES[key]
297 if (peertubeLicence.toLowerCase() === licence.toLowerCase()) return parseInt(key, 10)
298 }
299
300 return undefined
301 }
302
303 private getCategory (categories: string[]) {
304 if (!categories) return undefined
305
306 const categoryString = categories[0]
307 if (!categoryString || typeof categoryString !== 'string') return undefined
308
309 if (categoryString === 'News & Politics') return 11
310
311 for (const key of Object.keys(VIDEO_CATEGORIES)) {
312 const category = VIDEO_CATEGORIES[key]
313 if (categoryString.toLowerCase() === category.toLowerCase()) return parseInt(key, 10)
314 }
315
316 return undefined
317 }
318
319 private getLanguage (language: string) {
320 return VIDEO_LANGUAGES[language] ? language : undefined
321 }
322
323 private wrapWithProxyOptions (options: string[]) {
324 if (CONFIG.IMPORT.VIDEOS.HTTP.PROXY.ENABLED) {
325 logger.debug('Using proxy for YoutubeDL')
326
327 return [ '--proxy', CONFIG.IMPORT.VIDEOS.HTTP.PROXY.URL ].concat(options)
328 }
329
330 return options
331 }
332
333 // Thanks: https://github.com/przemyslawpluta/node-youtube-dl/blob/master/lib/downloader.js
334 // We rewrote it to avoid sync calls
335 static async updateYoutubeDLBinary () {
336 logger.info('Updating youtubeDL binary.')
337
338 const binDirectory = join(root(), 'node_modules', 'youtube-dl', 'bin')
339 const bin = join(binDirectory, 'youtube-dl')
340 const detailsPath = join(binDirectory, 'details')
341 const url = process.env.YOUTUBE_DL_DOWNLOAD_HOST || 'https://yt-dl.org/downloads/latest/youtube-dl'
342
343 await ensureDir(binDirectory)
344
345 try {
346 const gotContext = { bodyKBLimit: 20_000 }
347
348 const result = await peertubeGot(url, { followRedirect: false, context: gotContext })
349
350 if (result.statusCode !== HttpStatusCode.FOUND_302) {
351 logger.error('youtube-dl update error: did not get redirect for the latest version link. Status %d', result.statusCode)
352 return
353 }
354
355 const newUrl = result.headers.location
356 const newVersion = /\/(\d{4}\.\d\d\.\d\d(\.\d)?)\/youtube-dl$/.exec(newUrl)[1]
357
358 const downloadFileStream = peertubeGot.stream(newUrl, { context: gotContext })
359 const writeStream = createWriteStream(bin, { mode: 493 })
360
361 await pipelinePromise(
362 downloadFileStream,
363 writeStream
364 )
365
366 const details = JSON.stringify({ version: newVersion, path: bin, exec: 'youtube-dl' })
367 await writeFile(detailsPath, details, { encoding: 'utf8' })
368
369 logger.info('youtube-dl updated to version %s.', newVersion)
370 } catch (err) {
371 logger.error('Cannot update youtube-dl.', { err })
372 }
373 }
374
375 static async safeGetYoutubeDL () {
376 let youtubeDL
377
378 try {
379 youtubeDL = require('youtube-dl')
380 } catch (e) {
381 // Download binary
382 await this.updateYoutubeDLBinary()
383 youtubeDL = require('youtube-dl')
384 }
385
386 return youtubeDL
387 }
388}
389
390// ---------------------------------------------------------------------------
391
392export {
393 YoutubeDL
394}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 02:43:56 +0000