4 files changed, 16 insertions, 5 deletions

diff --git a/server/initializers/checker-after-init.ts b/server/initializers/checker-after-init.ts
index 979c97a8b..2b00e2047 100644
--- a/server/initializers/checker-after-init.ts
+++ b/server/initializers/checker-after-init.ts
@@ -116,6 +116,16 @@ function checkConfig () {
     if (CONFIG.TRANSCODING.WEBTORRENT.ENABLED === false && CONFIG.TRANSCODING.HLS.ENABLED === false) {
       return 'You need to enable at least WebTorrent transcoding or HLS transcoding.'
     }
+
+    if (CONFIG.TRANSCODING.CONCURRENCY <= 0) {
+      return 'Transcoding concurrency should be > 0'
+    }
+  }
+
+  if (CONFIG.IMPORT.VIDEOS.HTTP.ENABLED || CONFIG.IMPORT.VIDEOS.TORRENT.ENABLED) {
+    if (CONFIG.IMPORT.VIDEOS.CONCURRENCY <= 0) {
+      return 'Video import concurrency should be > 0'
+    }
   }
 
   // Broadcast message
diff --git a/server/initializers/checker-before-init.ts b/server/initializers/checker-before-init.ts
index cac24f0b6..a186afbdd 100644
--- a/server/initializers/checker-before-init.ts
+++ b/server/initializers/checker-before-init.ts
@@ -22,10 +22,10 @@ function checkMissedConfig () {
     'signup.filters.cidr.whitelist', 'signup.filters.cidr.blacklist',
     'redundancy.videos.strategies', 'redundancy.videos.check_interval',
     'transcoding.enabled', 'transcoding.threads', 'transcoding.allow_additional_extensions', 'transcoding.hls.enabled',
-    'transcoding.profile',
+    'transcoding.profile', 'transcoding.concurrency',
     'transcoding.resolutions.0p', 'transcoding.resolutions.240p', 'transcoding.resolutions.360p', 'transcoding.resolutions.480p',
     'transcoding.resolutions.720p', 'transcoding.resolutions.1080p', 'transcoding.resolutions.1440p', 'transcoding.resolutions.2160p',
-    'import.videos.http.enabled', 'import.videos.torrent.enabled', 'auto_blacklist.videos.of_users.enabled',
+    'import.videos.http.enabled', 'import.videos.torrent.enabled', 'import.videos.concurrency', 'auto_blacklist.videos.of_users.enabled',
     'trending.videos.interval_days',
     'instance.name', 'instance.short_description', 'instance.description', 'instance.terms', 'instance.default_client_route',
     'instance.is_nsfw', 'instance.default_nsfw_policy', 'instance.robots', 'instance.securitytxt',
diff --git a/server/initializers/config.ts b/server/initializers/config.ts
index 3b44d82ed..930fd784e 100644
--- a/server/initializers/config.ts
+++ b/server/initializers/config.ts
@@ -188,6 +188,7 @@ const CONFIG = {
     get ALLOW_ADDITIONAL_EXTENSIONS () { return config.get<boolean>('transcoding.allow_additional_extensions') },
     get ALLOW_AUDIO_FILES () { return config.get<boolean>('transcoding.allow_audio_files') },
     get THREADS () { return config.get<number>('transcoding.threads') },
+    get CONCURRENCY () { return config.get<number>('transcoding.concurrency') },
     get PROFILE () { return config.get<string>('transcoding.profile') },
     RESOLUTIONS: {
       get '0p' () { return config.get<boolean>('transcoding.resolutions.0p') },
@@ -237,6 +238,8 @@ const CONFIG = {
   },
   IMPORT: {
     VIDEOS: {
+      get CONCURRENCY () { return config.get<number>('import.videos.concurrency') },
+
       HTTP: {
         get ENABLED () { return config.get<boolean>('import.videos.http.enabled') },
         get FORCE_IPV4 () { return config.get<boolean>('import.videos.http.force_ipv4') },
diff --git a/server/initializers/constants.ts b/server/initializers/constants.ts
index 9d9b3966c..7beaca238 100644
--- a/server/initializers/constants.ts
+++ b/server/initializers/constants.ts
@@ -146,14 +146,12 @@ const JOB_ATTEMPTS: { [id in JobType]: number } = {
   'video-redundancy': 1,
   'video-live-ending': 1
 }
-const JOB_CONCURRENCY: { [id in JobType]: number } = {
+const JOB_CONCURRENCY: { [id in JobType]?: number } = {
   'activitypub-http-broadcast': 1,
   'activitypub-http-unicast': 5,
   'activitypub-http-fetcher': 1,
   'activitypub-follow': 1,
   'video-file-import': 1,
-  'video-transcoding': 1,
-  'video-import': 1,
   'email': 5,
   'videos-views': 1,
   'activitypub-refresher': 1,