2 files changed, 2 insertions, 1 deletions

diff --git a/server/initializers/constants.ts b/server/initializers/constants.ts
index 4cbb87ab5..54c390540 100644
--- a/server/initializers/constants.ts
+++ b/server/initializers/constants.ts
@@ -642,7 +642,7 @@ let STATIC_MAX_AGE = '2h'
 // Videos thumbnail size
 const THUMBNAILS_SIZE = {
   width: 223,
-  height: 112
+  height: 122
 }
 const PREVIEWS_SIZE = {
   width: 560,
diff --git a/server/middlewares/validators/videos/video-playlists.ts b/server/middlewares/validators/videos/video-playlists.ts
index fa26e2336..22b8b8ff1 100644
--- a/server/middlewares/validators/videos/video-playlists.ts
+++ b/server/middlewares/validators/videos/video-playlists.ts
@@ -344,6 +344,7 @@ function getCommonPlaylistEditAttributes () {
       .custom(isVideoPlaylistPrivacyValid).withMessage('Should have correct playlist privacy'),
     body('videoChannelId')
       .optional()
+      .customSanitizer(toValueOrNull)
       .toInt()
   ] as (ValidationChain | express.Handler)[]
 }