]> git.immae.eu Git - github/Chocobozzz/PeerTube.git/blobdiff - server/lib/activitypub/videos.ts
Optimize video view AP processing
[github/Chocobozzz/PeerTube.git] / server / lib / activitypub / videos.ts
index 388c31fe5d6d6dfba80a9e4ef6631e2fb8d0cf5b..de22e358442f2c07e96748fb19e0c69d89db0b50 100644 (file)
@@ -3,12 +3,12 @@ import * as sequelize from 'sequelize'
 import * as magnetUtil from 'magnet-uri'
 import { join } from 'path'
 import * as request from 'request'
-import { ActivityIconObject, VideoState } from '../../../shared/index'
+import { ActivityIconObject, ActivityUrlObject, ActivityVideoUrlObject, VideoState } from '../../../shared/index'
 import { VideoTorrentObject } from '../../../shared/models/activitypub/objects'
 import { VideoPrivacy } from '../../../shared/models/videos'
 import { sanitizeAndCheckVideoTorrentObject } from '../../helpers/custom-validators/activitypub/videos'
 import { isVideoFileInfoHashValid } from '../../helpers/custom-validators/videos'
-import { resetSequelizeInstance, retryTransactionWrapper, updateInstanceWithAnother } from '../../helpers/database-utils'
+import { resetSequelizeInstance, retryTransactionWrapper } from '../../helpers/database-utils'
 import { logger } from '../../helpers/logger'
 import { doRequest, doRequestAndSaveToFile } from '../../helpers/requests'
 import { ACTIVITY_PUB, CONFIG, REMOTE_SCHEME, sequelizeTypescript, VIDEO_MIMETYPE_EXT } from '../../initializers'
@@ -17,7 +17,7 @@ import { TagModel } from '../../models/video/tag'
 import { VideoModel } from '../../models/video/video'
 import { VideoChannelModel } from '../../models/video/video-channel'
 import { VideoFileModel } from '../../models/video/video-file'
-import { getOrCreateActorAndServerAndModel, updateActorAvatarInstance } from './actor'
+import { getOrCreateActorAndServerAndModel } from './actor'
 import { addVideoComments } from './video-comments'
 import { crawlCollectionPage } from './crawl'
 import { sendCreateVideo, sendUpdateVideo } from './send'
@@ -25,10 +25,10 @@ import { isArray } from '../../helpers/custom-validators/misc'
 import { VideoCaptionModel } from '../../models/video/video-caption'
 import { JobQueue } from '../job-queue'
 import { ActivitypubHttpFetcherPayload } from '../job-queue/handlers/activitypub-http-fetcher'
-import { getUrlFromWebfinger } from '../../helpers/webfinger'
 import { createRates } from './video-rates'
 import { addVideoShares, shareVideoByServerAndChannel } from './share'
 import { AccountModel } from '../../models/account/account'
+import { fetchVideoByUrl, VideoFetchByUrlType } from '../../helpers/video'
 
 async function federateVideoIfNeeded (video: VideoModel, isNewVideo: boolean, transaction?: sequelize.Transaction) {
   // If the video is not private and published, we federate it
@@ -51,18 +51,29 @@ async function federateVideoIfNeeded (video: VideoModel, isNewVideo: boolean, tr
   }
 }
 
-function fetchRemoteVideoStaticFile (video: VideoModel, path: string, reject: Function) {
-  const host = video.VideoChannel.Account.Actor.Server.host
+async function fetchRemoteVideo (videoUrl: string): Promise<{ response: request.RequestResponse, videoObject: VideoTorrentObject }> {
+  const options = {
+    uri: videoUrl,
+    method: 'GET',
+    json: true,
+    activityPub: true
+  }
 
-  // We need to provide a callback, if no we could have an uncaught exception
-  return request.get(REMOTE_SCHEME.HTTP + '://' + host + path, err => {
-    if (err) reject(err)
-  })
+  logger.info('Fetching remote video %s.', videoUrl)
+
+  const { response, body } = await doRequest(options)
+
+  if (sanitizeAndCheckVideoTorrentObject(body) === false) {
+    logger.debug('Remote video JSON is not valid.', { body })
+    return { response, videoObject: undefined }
+  }
+
+  return { response, videoObject: body }
 }
 
 async function fetchRemoteVideoDescription (video: VideoModel) {
   const host = video.VideoChannel.Account.Actor.Server.host
-  const path = video.getDescriptionPath()
+  const path = video.getDescriptionAPIPath()
   const options = {
     uri: REMOTE_SCHEME.HTTP + '://' + host + path,
     json: true
@@ -72,6 +83,15 @@ async function fetchRemoteVideoDescription (video: VideoModel) {
   return body.description ? body.description : ''
 }
 
+function fetchRemoteVideoStaticFile (video: VideoModel, path: string, reject: Function) {
+  const host = video.VideoChannel.Account.Actor.Server.host
+
+  // We need to provide a callback, if no we could have an uncaught exception
+  return request.get(REMOTE_SCHEME.HTTP + '://' + host + path, err => {
+    if (err) reject(err)
+  })
+}
+
 function generateThumbnailFromUrl (video: VideoModel, icon: ActivityIconObject) {
   const thumbnailName = video.getThumbnailName()
   const thumbnailPath = join(CONFIG.STORAGE.THUMBNAILS_DIR, thumbnailName)
@@ -83,149 +103,13 @@ function generateThumbnailFromUrl (video: VideoModel, icon: ActivityIconObject)
   return doRequestAndSaveToFile(options, thumbnailPath)
 }
 
-async function videoActivityObjectToDBAttributes (
-  videoChannel: VideoChannelModel,
-  videoObject: VideoTorrentObject,
-  to: string[] = []
-) {
-  const privacy = to.indexOf(ACTIVITY_PUB.PUBLIC) !== -1 ? VideoPrivacy.PUBLIC : VideoPrivacy.UNLISTED
-  const duration = videoObject.duration.replace(/[^\d]+/, '')
-
-  let language: string | undefined
-  if (videoObject.language) {
-    language = videoObject.language.identifier
-  }
-
-  let category: number | undefined
-  if (videoObject.category) {
-    category = parseInt(videoObject.category.identifier, 10)
-  }
-
-  let licence: number | undefined
-  if (videoObject.licence) {
-    licence = parseInt(videoObject.licence.identifier, 10)
-  }
-
-  const description = videoObject.content || null
-  const support = videoObject.support || null
-
-  return {
-    name: videoObject.name,
-    uuid: videoObject.uuid,
-    url: videoObject.id,
-    category,
-    licence,
-    language,
-    description,
-    support,
-    nsfw: videoObject.sensitive,
-    commentsEnabled: videoObject.commentsEnabled,
-    waitTranscoding: videoObject.waitTranscoding,
-    state: videoObject.state,
-    channelId: videoChannel.id,
-    duration: parseInt(duration, 10),
-    createdAt: new Date(videoObject.published),
-    publishedAt: new Date(videoObject.published),
-    // FIXME: updatedAt does not seems to be considered by Sequelize
-    updatedAt: new Date(videoObject.updated),
-    views: videoObject.views,
-    likes: 0,
-    dislikes: 0,
-    remote: true,
-    privacy
-  }
-}
-
-function videoFileActivityUrlToDBAttributes (videoCreated: VideoModel, videoObject: VideoTorrentObject) {
-  const mimeTypes = Object.keys(VIDEO_MIMETYPE_EXT)
-  const fileUrls = videoObject.url.filter(u => {
-    return mimeTypes.indexOf(u.mimeType) !== -1 && u.mimeType.startsWith('video/')
-  })
-
-  if (fileUrls.length === 0) {
-    throw new Error('Cannot find video files for ' + videoCreated.url)
-  }
-
-  const attributes: VideoFileModel[] = []
-  for (const fileUrl of fileUrls) {
-    // Fetch associated magnet uri
-    const magnet = videoObject.url.find(u => {
-      return u.mimeType === 'application/x-bittorrent;x-scheme-handler/magnet' && u.height === fileUrl.height
-    })
-
-    if (!magnet) throw new Error('Cannot find associated magnet uri for file ' + fileUrl.href)
-
-    const parsed = magnetUtil.decode(magnet.href)
-    if (!parsed || isVideoFileInfoHashValid(parsed.infoHash) === false) {
-      throw new Error('Cannot parse magnet URI ' + magnet.href)
-    }
-
-    const attribute = {
-      extname: VIDEO_MIMETYPE_EXT[ fileUrl.mimeType ],
-      infoHash: parsed.infoHash,
-      resolution: fileUrl.height,
-      size: fileUrl.size,
-      videoId: videoCreated.id,
-      fps: fileUrl.fps
-    } as VideoFileModel
-    attributes.push(attribute)
-  }
-
-  return attributes
-}
-
-function getOrCreateVideoChannel (videoObject: VideoTorrentObject) {
+function getOrCreateVideoChannelFromVideoObject (videoObject: VideoTorrentObject) {
   const channel = videoObject.attributedTo.find(a => a.type === 'Group')
   if (!channel) throw new Error('Cannot find associated video channel to video ' + videoObject.url)
 
   return getOrCreateActorAndServerAndModel(channel.id)
 }
 
-async function createVideo (videoObject: VideoTorrentObject, channelActor: ActorModel, waitThumbnail = false) {
-  logger.debug('Adding remote video %s.', videoObject.id)
-
-  const videoCreated: VideoModel = await sequelizeTypescript.transaction(async t => {
-    const sequelizeOptions = { transaction: t }
-
-    const videoData = await videoActivityObjectToDBAttributes(channelActor.VideoChannel, videoObject, videoObject.to)
-    const video = VideoModel.build(videoData)
-
-    const videoCreated = await video.save(sequelizeOptions)
-
-    // Process files
-    const videoFileAttributes = videoFileActivityUrlToDBAttributes(videoCreated, videoObject)
-    if (videoFileAttributes.length === 0) {
-      throw new Error('Cannot find valid files for video %s ' + videoObject.url)
-    }
-
-    const videoFilePromises = videoFileAttributes.map(f => VideoFileModel.create(f, { transaction: t }))
-    await Promise.all(videoFilePromises)
-
-    // Process tags
-    const tags = videoObject.tag.map(t => t.name)
-    const tagInstances = await TagModel.findOrCreateTags(tags, t)
-    await videoCreated.$set('Tags', tagInstances, sequelizeOptions)
-
-    // Process captions
-    const videoCaptionsPromises = videoObject.subtitleLanguage.map(c => {
-      return VideoCaptionModel.insertOrReplaceLanguage(videoCreated.id, c.identifier, t)
-    })
-    await Promise.all(videoCaptionsPromises)
-
-    logger.info('Remote video with uuid %s inserted.', videoObject.uuid)
-
-    videoCreated.VideoChannel = channelActor.VideoChannel
-    return videoCreated
-  })
-
-  const p = generateThumbnailFromUrl(videoCreated, videoObject.icon)
-    .catch(err => logger.warn('Cannot generate thumbnail of %s.', videoObject.id, { err }))
-
-  if (waitThumbnail === true) await p
-
-  return videoCreated
-}
-
 type SyncParam = {
   likes: boolean
   dislikes: boolean
@@ -234,28 +118,7 @@ type SyncParam = {
   thumbnail: boolean
   refreshVideo: boolean
 }
-async function getOrCreateVideoAndAccountAndChannel (
-  videoObject: VideoTorrentObject | string,
-  syncParam: SyncParam = { likes: true, dislikes: true, shares: true, comments: true, thumbnail: true, refreshVideo: false }
-) {
-  const videoUrl = typeof videoObject === 'string' ? videoObject : videoObject.id
-
-  let videoFromDatabase = await VideoModel.loadByUrlAndPopulateAccount(videoUrl)
-  if (videoFromDatabase) {
-    const p = retryTransactionWrapper(refreshVideoIfNeeded, videoFromDatabase)
-    if (syncParam.refreshVideo === true) videoFromDatabase = await p
-
-    return { video: videoFromDatabase }
-  }
-
-  const { videoObject: fetchedVideo } = await fetchRemoteVideo(videoUrl)
-  if (!fetchedVideo) throw new Error('Cannot fetch remote video with url: ' + videoUrl)
-
-  const channelActor = await getOrCreateVideoChannel(fetchedVideo)
-  const video = await retryTransactionWrapper(createVideo, fetchedVideo, channelActor, syncParam.thumbnail)
-
-  // Process outside the transaction because we could fetch remote data
-
+async function syncVideoExternalAttributes (video: VideoModel, fetchedVideo: VideoTorrentObject, syncParam: SyncParam) {
   logger.info('Adding likes/dislikes/shares/comments of video %s.', video.uuid)
 
   const jobPayloads: ActivitypubHttpFetcherPayload[] = []
@@ -289,64 +152,56 @@ async function getOrCreateVideoAndAccountAndChannel (
   }
 
   await Bluebird.map(jobPayloads, payload => JobQueue.Instance.createJob({ type: 'activitypub-http-fetcher', payload }))
-
-  return { video }
 }
 
-async function fetchRemoteVideo (videoUrl: string): Promise<{ response: request.RequestResponse, videoObject: VideoTorrentObject }> {
-  const options = {
-    uri: videoUrl,
-    method: 'GET',
-    json: true,
-    activityPub: true
-  }
-
-  logger.info('Fetching remote video %s.', videoUrl)
-
-  const { response, body } = await doRequest(options)
+async function getOrCreateVideoAndAccountAndChannel (options: {
+  videoObject: VideoTorrentObject | string,
+  syncParam?: SyncParam,
+  fetchType?: VideoFetchByUrlType,
+  refreshViews?: boolean
+}) {
+  // Default params
+  const syncParam = options.syncParam || { likes: true, dislikes: true, shares: true, comments: true, thumbnail: true, refreshVideo: false }
+  const fetchType = options.fetchType || 'all'
+  const refreshViews = options.refreshViews || false
+
+  // Get video url
+  const videoUrl = typeof options.videoObject === 'string' ? options.videoObject : options.videoObject.id
+
+  let videoFromDatabase = await fetchVideoByUrl(videoUrl, fetchType)
+  if (videoFromDatabase) {
+    const refreshOptions = {
+      video: videoFromDatabase,
+      fetchedType: fetchType,
+      syncParam,
+      refreshViews
+    }
+    const p = retryTransactionWrapper(refreshVideoIfNeeded, refreshOptions)
+    if (syncParam.refreshVideo === true) videoFromDatabase = await p
 
-  if (sanitizeAndCheckVideoTorrentObject(body) === false) {
-    logger.debug('Remote video JSON is not valid.', { body })
-    return { response, videoObject: undefined }
+    return { video: videoFromDatabase }
   }
 
-  return { response, videoObject: body }
-}
-
-async function refreshVideoIfNeeded (video: VideoModel): Promise<VideoModel> {
-  if (!video.isOutdated()) return video
+  const { videoObject: fetchedVideo } = await fetchRemoteVideo(videoUrl)
+  if (!fetchedVideo) throw new Error('Cannot fetch remote video with url: ' + videoUrl)
 
-  try {
-    const { response, videoObject } = await fetchRemoteVideo(video.url)
-    if (response.statusCode === 404) {
-      // Video does not exist anymore
-      await video.destroy()
-      return undefined
-    }
+  const channelActor = await getOrCreateVideoChannelFromVideoObject(fetchedVideo)
+  const video = await retryTransactionWrapper(createVideo, fetchedVideo, channelActor, syncParam.thumbnail)
 
-    if (videoObject === undefined) {
-      logger.warn('Cannot refresh remote video: invalid body.')
-      return video
-    }
+  await syncVideoExternalAttributes(video, fetchedVideo, syncParam)
 
-    const channelActor = await getOrCreateVideoChannel(videoObject)
-    const account = await AccountModel.load(channelActor.VideoChannel.accountId)
-    return updateVideoFromAP(video, videoObject, account.Actor, channelActor)
-
-  } catch (err) {
-    logger.warn('Cannot refresh video.', { err })
-    return video
-  }
+  return { video }
 }
 
-async function updateVideoFromAP (
+async function updateVideoFromAP (options: {
   video: VideoModel,
   videoObject: VideoTorrentObject,
-  accountActor: ActorModel,
-  channelActor: ActorModel,
+  account: AccountModel,
+  channel: VideoChannelModel,
+  updateViews: boolean,
   overrideTo?: string[]
-) {
-  logger.debug('Updating remote video "%s".', videoObject.uuid)
+}) {
+  logger.debug('Updating remote video "%s".', options.videoObject.uuid)
   let videoFieldsSave: any
 
   try {
@@ -355,72 +210,72 @@ async function updateVideoFromAP (
         transaction: t
       }
 
-      videoFieldsSave = video.toJSON()
+      videoFieldsSave = options.video.toJSON()
 
       // Check actor has the right to update the video
-      const videoChannel = video.VideoChannel
-      if (videoChannel.Account.Actor.id !== accountActor.id) {
-        throw new Error('Account ' + accountActor.url + ' does not own video channel ' + videoChannel.Actor.url)
+      const videoChannel = options.video.VideoChannel
+      if (videoChannel.Account.id !== options.account.id) {
+        throw new Error('Account ' + options.account.Actor.url + ' does not own video channel ' + videoChannel.Actor.url)
       }
 
-      const to = overrideTo ? overrideTo : videoObject.to
-      const videoData = await videoActivityObjectToDBAttributes(channelActor.VideoChannel, videoObject, to)
-      video.set('name', videoData.name)
-      video.set('uuid', videoData.uuid)
-      video.set('url', videoData.url)
-      video.set('category', videoData.category)
-      video.set('licence', videoData.licence)
-      video.set('language', videoData.language)
-      video.set('description', videoData.description)
-      video.set('support', videoData.support)
-      video.set('nsfw', videoData.nsfw)
-      video.set('commentsEnabled', videoData.commentsEnabled)
-      video.set('waitTranscoding', videoData.waitTranscoding)
-      video.set('state', videoData.state)
-      video.set('duration', videoData.duration)
-      video.set('createdAt', videoData.createdAt)
-      video.set('publishedAt', videoData.publishedAt)
-      video.set('views', videoData.views)
-      video.set('privacy', videoData.privacy)
-      video.set('channelId', videoData.channelId)
-
-      await video.save(sequelizeOptions)
+      const to = options.overrideTo ? options.overrideTo : options.videoObject.to
+      const videoData = await videoActivityObjectToDBAttributes(options.channel, options.videoObject, to)
+      options.video.set('name', videoData.name)
+      options.video.set('uuid', videoData.uuid)
+      options.video.set('url', videoData.url)
+      options.video.set('category', videoData.category)
+      options.video.set('licence', videoData.licence)
+      options.video.set('language', videoData.language)
+      options.video.set('description', videoData.description)
+      options.video.set('support', videoData.support)
+      options.video.set('nsfw', videoData.nsfw)
+      options.video.set('commentsEnabled', videoData.commentsEnabled)
+      options.video.set('waitTranscoding', videoData.waitTranscoding)
+      options.video.set('state', videoData.state)
+      options.video.set('duration', videoData.duration)
+      options.video.set('createdAt', videoData.createdAt)
+      options.video.set('publishedAt', videoData.publishedAt)
+      options.video.set('privacy', videoData.privacy)
+      options.video.set('channelId', videoData.channelId)
+
+      if (options.updateViews === true) options.video.set('views', videoData.views)
+      await options.video.save(sequelizeOptions)
 
       // Don't block on request
-      generateThumbnailFromUrl(video, videoObject.icon)
-        .catch(err => logger.warn('Cannot generate thumbnail of %s.', videoObject.id, { err }))
+      generateThumbnailFromUrl(options.video, options.videoObject.icon)
+        .catch(err => logger.warn('Cannot generate thumbnail of %s.', options.videoObject.id, { err }))
 
       // Remove old video files
       const videoFileDestroyTasks: Bluebird<void>[] = []
-      for (const videoFile of video.VideoFiles) {
+      for (const videoFile of options.video.VideoFiles) {
         videoFileDestroyTasks.push(videoFile.destroy(sequelizeOptions))
       }
       await Promise.all(videoFileDestroyTasks)
 
-      const videoFileAttributes = videoFileActivityUrlToDBAttributes(video, videoObject)
+      const videoFileAttributes = videoFileActivityUrlToDBAttributes(options.video, options.videoObject)
       const tasks = videoFileAttributes.map(f => VideoFileModel.create(f, sequelizeOptions))
       await Promise.all(tasks)
 
       // Update Tags
-      const tags = videoObject.tag.map(tag => tag.name)
+      const tags = options.videoObject.tag.map(tag => tag.name)
       const tagInstances = await TagModel.findOrCreateTags(tags, t)
-      await video.$set('Tags', tagInstances, sequelizeOptions)
+      await options.video.$set('Tags', tagInstances, sequelizeOptions)
 
       // Update captions
-      await VideoCaptionModel.deleteAllCaptionsOfRemoteVideo(video.id, t)
+      await VideoCaptionModel.deleteAllCaptionsOfRemoteVideo(options.video.id, t)
 
-      const videoCaptionsPromises = videoObject.subtitleLanguage.map(c => {
-        return VideoCaptionModel.insertOrReplaceLanguage(video.id, c.identifier, t)
+      const videoCaptionsPromises = options.videoObject.subtitleLanguage.map(c => {
+        return VideoCaptionModel.insertOrReplaceLanguage(options.video.id, c.identifier, t)
       })
       await Promise.all(videoCaptionsPromises)
     })
 
-    logger.info('Remote video with uuid %s updated', videoObject.uuid)
+    logger.info('Remote video with uuid %s updated', options.videoObject.uuid)
 
     return updatedVideo
   } catch (err) {
-    if (video !== undefined && videoFieldsSave !== undefined) {
-      resetSequelizeInstance(video, videoFieldsSave)
+    if (options.video !== undefined && videoFieldsSave !== undefined) {
+      resetSequelizeInstance(options.video, videoFieldsSave)
     }
 
     // This is just a debug because we will retry the insert
@@ -437,10 +292,188 @@ export {
   fetchRemoteVideoStaticFile,
   fetchRemoteVideoDescription,
   generateThumbnailFromUrl,
-  videoActivityObjectToDBAttributes,
-  videoFileActivityUrlToDBAttributes,
-  createVideo,
-  getOrCreateVideoChannel,
-  addVideoShares,
-  createRates
+  getOrCreateVideoChannelFromVideoObject
+}
+
+// ---------------------------------------------------------------------------
+
+function isActivityVideoUrlObject (url: ActivityUrlObject): url is ActivityVideoUrlObject {
+  const mimeTypes = Object.keys(VIDEO_MIMETYPE_EXT)
+
+  return mimeTypes.indexOf(url.mimeType) !== -1 && url.mimeType.startsWith('video/')
+}
+
+async function createVideo (videoObject: VideoTorrentObject, channelActor: ActorModel, waitThumbnail = false) {
+  logger.debug('Adding remote video %s.', videoObject.id)
+
+  const videoCreated: VideoModel = await sequelizeTypescript.transaction(async t => {
+    const sequelizeOptions = { transaction: t }
+
+    const videoData = await videoActivityObjectToDBAttributes(channelActor.VideoChannel, videoObject, videoObject.to)
+    const video = VideoModel.build(videoData)
+
+    const videoCreated = await video.save(sequelizeOptions)
+
+    // Process files
+    const videoFileAttributes = videoFileActivityUrlToDBAttributes(videoCreated, videoObject)
+    if (videoFileAttributes.length === 0) {
+      throw new Error('Cannot find valid files for video %s ' + videoObject.url)
+    }
+
+    const videoFilePromises = videoFileAttributes.map(f => VideoFileModel.create(f, { transaction: t }))
+    await Promise.all(videoFilePromises)
+
+    // Process tags
+    const tags = videoObject.tag.map(t => t.name)
+    const tagInstances = await TagModel.findOrCreateTags(tags, t)
+    await videoCreated.$set('Tags', tagInstances, sequelizeOptions)
+
+    // Process captions
+    const videoCaptionsPromises = videoObject.subtitleLanguage.map(c => {
+      return VideoCaptionModel.insertOrReplaceLanguage(videoCreated.id, c.identifier, t)
+    })
+    await Promise.all(videoCaptionsPromises)
+
+    logger.info('Remote video with uuid %s inserted.', videoObject.uuid)
+
+    videoCreated.VideoChannel = channelActor.VideoChannel
+    return videoCreated
+  })
+
+  const p = generateThumbnailFromUrl(videoCreated, videoObject.icon)
+    .catch(err => logger.warn('Cannot generate thumbnail of %s.', videoObject.id, { err }))
+
+  if (waitThumbnail === true) await p
+
+  return videoCreated
+}
+
+async function refreshVideoIfNeeded (options: {
+  video: VideoModel,
+  fetchedType: VideoFetchByUrlType,
+  syncParam: SyncParam,
+  refreshViews: boolean
+}): Promise<VideoModel> {
+  // We need more attributes if the argument video was fetched with not enough joints
+  const video = options.fetchedType === 'all' ? options.video : await VideoModel.loadByUrlAndPopulateAccount(options.video.url)
+
+  if (!video.isOutdated()) return video
+
+  try {
+    const { response, videoObject } = await fetchRemoteVideo(video.url)
+    if (response.statusCode === 404) {
+      // Video does not exist anymore
+      await video.destroy()
+      return undefined
+    }
+
+    if (videoObject === undefined) {
+      logger.warn('Cannot refresh remote video: invalid body.')
+      return video
+    }
+
+    const channelActor = await getOrCreateVideoChannelFromVideoObject(videoObject)
+    const account = await AccountModel.load(channelActor.VideoChannel.accountId)
+
+    const updateOptions = {
+      video,
+      videoObject,
+      account,
+      channel: channelActor.VideoChannel,
+      updateViews: options.refreshViews
+    }
+    await updateVideoFromAP(updateOptions)
+    await syncVideoExternalAttributes(video, videoObject, options.syncParam)
+  } catch (err) {
+    logger.warn('Cannot refresh video.', { err })
+    return video
+  }
+}
+
+async function videoActivityObjectToDBAttributes (
+  videoChannel: VideoChannelModel,
+  videoObject: VideoTorrentObject,
+  to: string[] = []
+) {
+  const privacy = to.indexOf(ACTIVITY_PUB.PUBLIC) !== -1 ? VideoPrivacy.PUBLIC : VideoPrivacy.UNLISTED
+  const duration = videoObject.duration.replace(/[^\d]+/, '')
+
+  let language: string | undefined
+  if (videoObject.language) {
+    language = videoObject.language.identifier
+  }
+
+  let category: number | undefined
+  if (videoObject.category) {
+    category = parseInt(videoObject.category.identifier, 10)
+  }
+
+  let licence: number | undefined
+  if (videoObject.licence) {
+    licence = parseInt(videoObject.licence.identifier, 10)
+  }
+
+  const description = videoObject.content || null
+  const support = videoObject.support || null
+
+  return {
+    name: videoObject.name,
+    uuid: videoObject.uuid,
+    url: videoObject.id,
+    category,
+    licence,
+    language,
+    description,
+    support,
+    nsfw: videoObject.sensitive,
+    commentsEnabled: videoObject.commentsEnabled,
+    waitTranscoding: videoObject.waitTranscoding,
+    state: videoObject.state,
+    channelId: videoChannel.id,
+    duration: parseInt(duration, 10),
+    createdAt: new Date(videoObject.published),
+    publishedAt: new Date(videoObject.published),
+    // FIXME: updatedAt does not seems to be considered by Sequelize
+    updatedAt: new Date(videoObject.updated),
+    views: videoObject.views,
+    likes: 0,
+    dislikes: 0,
+    remote: true,
+    privacy
+  }
+}
+
+function videoFileActivityUrlToDBAttributes (videoCreated: VideoModel, videoObject: VideoTorrentObject) {
+  const fileUrls = videoObject.url.filter(u => isActivityVideoUrlObject(u)) as ActivityVideoUrlObject[]
+
+  if (fileUrls.length === 0) {
+    throw new Error('Cannot find video files for ' + videoCreated.url)
+  }
+
+  const attributes: VideoFileModel[] = []
+  for (const fileUrl of fileUrls) {
+    // Fetch associated magnet uri
+    const magnet = videoObject.url.find(u => {
+      return u.mimeType === 'application/x-bittorrent;x-scheme-handler/magnet' && u.height === fileUrl.height
+    })
+
+    if (!magnet) throw new Error('Cannot find associated magnet uri for file ' + fileUrl.href)
+
+    const parsed = magnetUtil.decode(magnet.href)
+    if (!parsed || isVideoFileInfoHashValid(parsed.infoHash) === false) {
+      throw new Error('Cannot parse magnet URI ' + magnet.href)
+    }
+
+    const attribute = {
+      extname: VIDEO_MIMETYPE_EXT[ fileUrl.mimeType ],
+      infoHash: parsed.infoHash,
+      resolution: fileUrl.height,
+      size: fileUrl.size,
+      videoId: videoCreated.id,
+      fps: fileUrl.fps
+    } as VideoFileModel
+    attributes.push(attribute)
+  }
+
+  return attributes
 }