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diff --git a/server/lib/job-queue/handlers/video-transcoding.ts b/server/lib/job-queue/handlers/video-transcoding.ts
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index 000000000..ceee83f13
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+++ b/server/lib/job-queue/handlers/video-transcoding.ts
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+import * as Bull from 'bull'
+import { VideoResolution, VideoState } from '../../../../shared'
+import { logger } from '../../../helpers/logger'
+import { VideoModel } from '../../../models/video/video'
+import { JobQueue } from '../job-queue'
+import { federateVideoIfNeeded } from '../../activitypub'
+import { retryTransactionWrapper } from '../../../helpers/database-utils'
+import { sequelizeTypescript, CONFIG } from '../../../initializers'
+import * as Bluebird from 'bluebird'
+import { computeResolutionsToTranscode } from '../../../helpers/ffmpeg-utils'
+import { generateHlsPlaylist, importVideoFile, optimizeVideofile, transcodeOriginalVideofile } from '../../video-transcoding'
+import { Notifier } from '../../notifier'
+
+export type VideoTranscodingPayload = {
+  videoUUID: string
+  resolution?: VideoResolution
+  isNewVideo?: boolean
+  isPortraitMode?: boolean
+  generateHlsPlaylist?: boolean
+}
+
+export type VideoFileImportPayload = {
+  videoUUID: string,
+  filePath: string
+}
+
+async function processVideoFileImport (job: Bull.Job) {
+  const payload = job.data as VideoFileImportPayload
+  logger.info('Processing video file import in job %d.', job.id)
+
+  const video = await VideoModel.loadAndPopulateAccountAndServerAndTags(payload.videoUUID)
+  // No video, maybe deleted?
+  if (!video) {
+    logger.info('Do not process job %d, video does not exist.', job.id)
+    return undefined
+  }
+
+  await importVideoFile(video, payload.filePath)
+
+  await onVideoFileTranscoderOrImportSuccess(video)
+  return video
+}
+
+async function processVideoTranscoding (job: Bull.Job) {
+  const payload = job.data as VideoTranscodingPayload
+  logger.info('Processing video file in job %d.', job.id)
+
+  const video = await VideoModel.loadAndPopulateAccountAndServerAndTags(payload.videoUUID)
+  // No video, maybe deleted?
+  if (!video) {
+    logger.info('Do not process job %d, video does not exist.', job.id)
+    return undefined
+  }
+
+  if (payload.generateHlsPlaylist) {
+    await generateHlsPlaylist(video, payload.resolution, payload.isPortraitMode || false)
+
+    await retryTransactionWrapper(onHlsPlaylistGenerationSuccess, video)
+  } else if (payload.resolution) { // Transcoding in other resolution
+    await transcodeOriginalVideofile(video, payload.resolution, payload.isPortraitMode || false)
+
+    await retryTransactionWrapper(onVideoFileTranscoderOrImportSuccess, video, payload)
+  } else {
+    await optimizeVideofile(video)
+
+    await retryTransactionWrapper(onVideoFileOptimizerSuccess, video, payload)
+  }
+
+  return video
+}
+
+async function onHlsPlaylistGenerationSuccess (video: VideoModel) {
+  if (video === undefined) return undefined
+
+  await sequelizeTypescript.transaction(async t => {
+    // Maybe the video changed in database, refresh it
+    let videoDatabase = await VideoModel.loadAndPopulateAccountAndServerAndTags(video.uuid, t)
+    // Video does not exist anymore
+    if (!videoDatabase) return undefined
+
+    // If the video was not published, we consider it is a new one for other instances
+    await federateVideoIfNeeded(videoDatabase, false, t)
+  })
+}
+
+async function onVideoFileTranscoderOrImportSuccess (video: VideoModel, payload?: VideoTranscodingPayload) {
+  if (video === undefined) return undefined
+
+  const { videoDatabase, videoPublished } = await sequelizeTypescript.transaction(async t => {
+    // Maybe the video changed in database, refresh it
+    let videoDatabase = await VideoModel.loadAndPopulateAccountAndServerAndTags(video.uuid, t)
+    // Video does not exist anymore
+    if (!videoDatabase) return undefined
+
+    let videoPublished = false
+
+    // We transcoded the video file in another format, now we can publish it
+    if (videoDatabase.state !== VideoState.PUBLISHED) {
+      videoPublished = true
+
+      videoDatabase.state = VideoState.PUBLISHED
+      videoDatabase.publishedAt = new Date()
+      videoDatabase = await videoDatabase.save({ transaction: t })
+    }
+
+    // If the video was not published, we consider it is a new one for other instances
+    await federateVideoIfNeeded(videoDatabase, videoPublished, t)
+
+    return { videoDatabase, videoPublished }
+  })
+
+  // don't notify prior to scheduled video update
+  if (videoPublished && !videoDatabase.ScheduleVideoUpdate) {
+    Notifier.Instance.notifyOnNewVideo(videoDatabase)
+    Notifier.Instance.notifyOnPendingVideoPublished(videoDatabase)
+  }
+
+  await createHlsJobIfEnabled(payload)
+}
+
+async function onVideoFileOptimizerSuccess (videoArg: VideoModel, payload: VideoTranscodingPayload) {
+  if (videoArg === undefined) return undefined
+
+  // Outside the transaction (IO on disk)
+  const { videoFileResolution } = await videoArg.getOriginalFileResolution()
+
+  const { videoDatabase, videoPublished } = await sequelizeTypescript.transaction(async t => {
+    // Maybe the video changed in database, refresh it
+    let videoDatabase = await VideoModel.loadAndPopulateAccountAndServerAndTags(videoArg.uuid, t)
+    // Video does not exist anymore
+    if (!videoDatabase) return undefined
+
+    // Create transcoding jobs if there are enabled resolutions
+    const resolutionsEnabled = computeResolutionsToTranscode(videoFileResolution)
+    logger.info(
+      'Resolutions computed for video %s and origin file height of %d.', videoDatabase.uuid, videoFileResolution,
+      { resolutions: resolutionsEnabled }
+    )
+
+    let videoPublished = false
+
+    if (resolutionsEnabled.length !== 0) {
+      const tasks: (Bluebird<Bull.Job<any>> | Promise<Bull.Job<any>>)[] = []
+
+      for (const resolution of resolutionsEnabled) {
+        const dataInput = {
+          videoUUID: videoDatabase.uuid,
+          resolution
+        }
+
+        const p = JobQueue.Instance.createJob({ type: 'video-transcoding', payload: dataInput })
+        tasks.push(p)
+      }
+
+      await Promise.all(tasks)
+
+      logger.info('Transcoding jobs created for uuid %s.', videoDatabase.uuid, { resolutionsEnabled })
+    } else {
+      videoPublished = true
+
+      // No transcoding to do, it's now published
+      videoDatabase.state = VideoState.PUBLISHED
+      videoDatabase = await videoDatabase.save({ transaction: t })
+
+      logger.info('No transcoding jobs created for video %s (no resolutions).', videoDatabase.uuid, { privacy: videoDatabase.privacy })
+    }
+
+    await federateVideoIfNeeded(videoDatabase, payload.isNewVideo, t)
+
+    return { videoDatabase, videoPublished }
+  })
+
+  // don't notify prior to scheduled video update
+  if (!videoDatabase.ScheduleVideoUpdate) {
+    if (payload.isNewVideo) Notifier.Instance.notifyOnNewVideo(videoDatabase)
+    if (videoPublished) Notifier.Instance.notifyOnPendingVideoPublished(videoDatabase)
+  }
+
+  await createHlsJobIfEnabled(Object.assign({}, payload, { resolution: videoDatabase.getOriginalFile().resolution }))
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  processVideoTranscoding,
+  processVideoFileImport
+}
+
+// ---------------------------------------------------------------------------
+
+function createHlsJobIfEnabled (payload?: VideoTranscodingPayload) {
+  // Generate HLS playlist?
+  if (payload && CONFIG.TRANSCODING.HLS.ENABLED) {
+    const hlsTranscodingPayload = {
+      videoUUID: payload.videoUUID,
+      resolution: payload.resolution,
+      isPortraitMode: payload.isPortraitMode,
+
+      generateHlsPlaylist: true
+    }
+
+    return JobQueue.Instance.createJob({ type: 'video-transcoding', payload: hlsTranscodingPayload })
+  }
+}