1 files changed, 13 insertions, 0 deletions

diff --git a/server/helpers/custom-validators/activitypub/videos.ts b/server/helpers/custom-validators/activitypub/videos.ts
index 37c90a0c8..d97bbd2a9 100644
--- a/server/helpers/custom-validators/activitypub/videos.ts
+++ b/server/helpers/custom-validators/activitypub/videos.ts
@@ -51,6 +51,7 @@ function sanitizeAndCheckVideoTorrentObject (video: any) {
   if (!setValidRemoteVideoUrls(video)) return false
   if (!setRemoteVideoTruncatedContent(video)) return false
   if (!setValidAttributedTo(video)) return false
+  if (!setValidRemoteCaptions(video)) return false
 
   // Default attributes
   if (!isVideoStateValid(video.state)) video.state = VideoState.PUBLISHED
@@ -98,6 +99,18 @@ function setValidRemoteTags (video: any) {
   return true
 }
 
+function setValidRemoteCaptions (video: any) {
+  if (!video.subtitleLanguage) video.subtitleLanguage = []
+
+  if (Array.isArray(video.subtitleLanguage) === false) return false
+
+  video.subtitleLanguage = video.subtitleLanguage.filter(caption => {
+    return isRemoteStringIdentifierValid(caption)
+  })
+
+  return true
+}
+
 function isRemoteNumberIdentifierValid (data: any) {
   return validator.isInt(data.identifier, { min: 0 })
 }