aboutsummaryrefslogtreecommitdiffhomepage
path: root/server/helpers/youtube-dl/youtube-dl-cli.ts
blob: 765038cea29cd9e6b9ebee0e1663c81f1422aa12 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
import execa from 'execa'
import { ensureDir, pathExists, writeFile } from 'fs-extra'
import { dirname, join } from 'path'
import { CONFIG } from '@server/initializers/config'
import { VideoResolution } from '@shared/models'
import { logger, loggerTagsFactory } from '../logger'
import { getProxy, isProxyEnabled } from '../proxy'
import { isBinaryResponse, peertubeGot } from '../requests'
import { OptionsOfBufferResponseBody } from 'got/dist/source'

const lTags = loggerTagsFactory('youtube-dl')

const youtubeDLBinaryPath = join(CONFIG.STORAGE.BIN_DIR, CONFIG.IMPORT.VIDEOS.HTTP.YOUTUBE_DL_RELEASE.NAME)

export class YoutubeDLCLI {

  static async safeGet () {
    if (!await pathExists(youtubeDLBinaryPath)) {
      await ensureDir(dirname(youtubeDLBinaryPath))

      await this.updateYoutubeDLBinary()
    }

    return new YoutubeDLCLI()
  }

  static async updateYoutubeDLBinary () {
    const url = CONFIG.IMPORT.VIDEOS.HTTP.YOUTUBE_DL_RELEASE.URL

    logger.info('Updating youtubeDL binary from %s.', url, lTags())

    const gotOptions: OptionsOfBufferResponseBody = {
      context: { bodyKBLimit: 20_000 },
      responseType: 'buffer' as 'buffer'
    }

    if (process.env.YOUTUBE_DL_DOWNLOAD_BEARER_TOKEN) {
      gotOptions.headers = {
        authorization: 'Bearer ' + process.env.YOUTUBE_DL_DOWNLOAD_BEARER_TOKEN
      }
    }

    try {
      let gotResult = await peertubeGot(url, gotOptions)

      if (!isBinaryResponse(gotResult)) {
        const json = JSON.parse(gotResult.body.toString())
        const latest = json.filter(release => release.prerelease === false)[0]
        if (!latest) throw new Error('Cannot find latest release')

        const releaseName = CONFIG.IMPORT.VIDEOS.HTTP.YOUTUBE_DL_RELEASE.NAME
        const releaseAsset = latest.assets.find(a => a.name === releaseName)
        if (!releaseAsset) throw new Error(`Cannot find appropriate release with name ${releaseName} in release assets`)

        gotResult = await peertubeGot(releaseAsset.browser_download_url, gotOptions)
      }

      if (!isBinaryResponse(gotResult)) {
        throw new Error('Not a binary response')
      }

      await writeFile(youtubeDLBinaryPath, gotResult.body)

      logger.info('youtube-dl updated %s.', youtubeDLBinaryPath, lTags())
    } catch (err) {
      logger.error('Cannot update youtube-dl from %s.', url, { err, ...lTags() })
    }
  }

  static getYoutubeDLVideoFormat (enabledResolutions: VideoResolution[], useBestFormat: boolean) {
    /**
     * list of format selectors in order or preference
     * see https://github.com/ytdl-org/youtube-dl#format-selection
     *
     * case #1 asks for a mp4 using h264 (avc1) and the exact resolution in the hope
     * of being able to do a "quick-transcode"
     * case #2 is the first fallback. No "quick-transcode" means we can get anything else (like vp9)
     * case #3 is the resolution-degraded equivalent of #1, and already a pretty safe fallback
     *
     * in any case we avoid AV1, see https://github.com/Chocobozzz/PeerTube/issues/3499
     **/

    let result: string[] = []

    if (!useBestFormat) {
      const resolution = enabledResolutions.length === 0
        ? VideoResolution.H_720P
        : Math.max(...enabledResolutions)

      result = [
        `bestvideo[vcodec^=avc1][height=${resolution}]+bestaudio[ext=m4a]`, // case #1
        `bestvideo[vcodec!*=av01][vcodec!*=vp9.2][height=${resolution}]+bestaudio`, // case #2
        `bestvideo[vcodec^=avc1][height<=${resolution}]+bestaudio[ext=m4a]` // case #
      ]
    }

    return result.concat([
      'bestvideo[vcodec!*=av01][vcodec!*=vp9.2]+bestaudio',
      'best[vcodec!*=av01][vcodec!*=vp9.2]', // case fallback for known formats
      'bestvideo[ext=mp4]+bestaudio[ext=m4a]',
      'best' // Ultimate fallback
    ]).join('/')
  }

  private constructor () {

  }

  download (options: {
    url: string
    format: string
    output: string
    processOptions: execa.NodeOptions
    timeout?: number
    additionalYoutubeDLArgs?: string[]
  }) {
    let args = options.additionalYoutubeDLArgs || []
    args = args.concat([ '--merge-output-format', 'mp4', '-f', options.format, '-o', options.output ])

    return this.run({
      url: options.url,
      processOptions: options.processOptions,
      timeout: options.timeout,
      args
    })
  }

  async getInfo (options: {
    url: string
    format: string
    processOptions: execa.NodeOptions
    additionalYoutubeDLArgs?: string[]
  }) {
    const { url, format, additionalYoutubeDLArgs = [], processOptions } = options

    const completeArgs = additionalYoutubeDLArgs.concat([ '--dump-json', '-f', format ])

    const data = await this.run({ url, args: completeArgs, processOptions })
    if (!data) return undefined

    const info = data.map(d => JSON.parse(d))

    return info.length === 1
      ? info[0]
      : info
  }

  async getListInfo (options: {
    url: string
    latestVideosCount?: number
    processOptions: execa.NodeOptions
  }): Promise<{ upload_date: string, webpage_url: string }[]> {
    const additionalYoutubeDLArgs = [ '--skip-download', '--playlist-reverse' ]

    if (CONFIG.IMPORT.VIDEOS.HTTP.YOUTUBE_DL_RELEASE.NAME === 'yt-dlp') {
      // Optimize listing videos only when using yt-dlp because it is bugged with youtube-dl when fetching a channel
      additionalYoutubeDLArgs.push('--flat-playlist')
    }

    if (options.latestVideosCount !== undefined) {
      additionalYoutubeDLArgs.push('--playlist-end', options.latestVideosCount.toString())
    }

    const result = await this.getInfo({
      url: options.url,
      format: YoutubeDLCLI.getYoutubeDLVideoFormat([], false),
      processOptions: options.processOptions,
      additionalYoutubeDLArgs
    })

    if (!result) return result
    if (!Array.isArray(result)) return [ result ]

    return result
  }

  async getSubs (options: {
    url: string
    format: 'vtt'
    processOptions: execa.NodeOptions
  }) {
    const { url, format, processOptions } = options

    const args = [ '--skip-download', '--all-subs', `--sub-format=${format}` ]

    const data = await this.run({ url, args, processOptions })
    const files: string[] = []

    const skipString = '[info] Writing video subtitles to: '

    for (let i = 0, len = data.length; i < len; i++) {
      const line = data[i]

      if (line.indexOf(skipString) === 0) {
        files.push(line.slice(skipString.length))
      }
    }

    return files
  }

  private async run (options: {
    url: string
    args: string[]
    timeout?: number
    processOptions: execa.NodeOptions
  }) {
    const { url, args, timeout, processOptions } = options

    let completeArgs = this.wrapWithProxyOptions(args)
    completeArgs = this.wrapWithIPOptions(completeArgs)
    completeArgs = this.wrapWithFFmpegOptions(completeArgs)

    const { PYTHON_PATH } = CONFIG.IMPORT.VIDEOS.HTTP.YOUTUBE_DL_RELEASE
    const subProcess = execa(PYTHON_PATH, [ youtubeDLBinaryPath, ...completeArgs, url ], processOptions)

    if (timeout) {
      setTimeout(() => subProcess.cancel(), timeout)
    }

    const output = await subProcess

    logger.debug('Run youtube-dl command.', { command: output.command, ...lTags() })

    return output.stdout
      ? output.stdout.trim().split(/\r?\n/)
      : undefined
  }

  private wrapWithProxyOptions (args: string[]) {
    if (isProxyEnabled()) {
      logger.debug('Using proxy %s for YoutubeDL', getProxy(), lTags())

      return [ '--proxy', getProxy() ].concat(args)
    }

    return args
  }

  private wrapWithIPOptions (args: string[]) {
    if (CONFIG.IMPORT.VIDEOS.HTTP.FORCE_IPV4) {
      logger.debug('Force ipv4 for YoutubeDL')

      return [ '--force-ipv4' ].concat(args)
    }

    return args
  }

  private wrapWithFFmpegOptions (args: string[]) {
    if (process.env.FFMPEG_PATH) {
      logger.debug('Using ffmpeg location %s for YoutubeDL', process.env.FFMPEG_PATH, lTags())

      return [ '--ffmpeg-location', process.env.FFMPEG_PATH ].concat(args)
    }

    return args
  }
}