diff --git a/server/middlewares/validators/videos/video-imports.ts b/server/middlewares/validators/videos/video-imports.ts
index d0643ff26..a5e3ffbcd 100644
--- a/server/middlewares/validators/videos/video-imports.ts
+++ b/server/middlewares/validators/videos/video-imports.ts
@@ -33,7 +33,9 @@ const videoImportAddValidator = getCommonVideoEditAttributes().concat([
     ),
   body('name')
     .optional()
-    .custom(isVideoNameValid).withMessage('Should have a valid name'),
+    .custom(isVideoNameValid).withMessage(
+      `Should have a video name between ${CONSTRAINTS_FIELDS.VIDEOS.NAME.min} and ${CONSTRAINTS_FIELDS.VIDEOS.NAME.max} characters long`
+    ),
 
   async (req: express.Request, res: express.Response, next: express.NextFunction) => {
     logger.debug('Checking videoImportAddValidator parameters', { parameters: req.body })
diff --git a/server/middlewares/validators/videos/video-live.ts b/server/middlewares/validators/videos/video-live.ts
index 3a73e1272..ec4c7f32f 100644
--- a/server/middlewares/validators/videos/video-live.ts
+++ b/server/middlewares/validators/videos/video-live.ts
@@ -14,6 +14,7 @@ import { VideoModel } from '@server/models/video/video'
 import { Hooks } from '@server/lib/plugins/hooks'
 import { isLocalLiveVideoAccepted } from '@server/lib/moderation'
 import { HttpStatusCode } from '@shared/core-utils/miscs/http-error-codes'
+import { CONSTRAINTS_FIELDS } from '@server/initializers/constants'
 
 const videoLiveGetValidator = [
   param('videoId').custom(isIdOrUUIDValid).not().isEmpty().withMessage('Should have a valid videoId'),
@@ -43,7 +44,9 @@ const videoLiveAddValidator = getCommonVideoEditAttributes().concat([
     .custom(isIdValid).withMessage('Should have correct video channel id'),
 
   body('name')
-    .custom(isVideoNameValid).withMessage('Should have a valid name'),
+    .custom(isVideoNameValid).withMessage(
+      `Should have a video name between ${CONSTRAINTS_FIELDS.VIDEOS.NAME.min} and ${CONSTRAINTS_FIELDS.VIDEOS.NAME.max} characters long`
+    ),
 
   body('saveReplay')
     .optional()
diff --git a/server/middlewares/validators/videos/videos.ts b/server/middlewares/validators/videos/videos.ts
index dce02df18..8864be269 100644
--- a/server/middlewares/validators/videos/videos.ts
+++ b/server/middlewares/validators/videos/videos.ts
@@ -65,8 +65,9 @@ const videosAddLegacyValidator = getCommonVideoEditAttributes().concat([
     .withMessage('Should have a file'),
   body('name')
     .trim()
-    .custom(isVideoNameValid)
-    .withMessage('Should have a valid name'),
+    .custom(isVideoNameValid).withMessage(
+      `Should have a video name between ${CONSTRAINTS_FIELDS.VIDEOS.NAME.min} and ${CONSTRAINTS_FIELDS.VIDEOS.NAME.max} characters long`
+    ),
   body('channelId')
     .customSanitizer(toIntOrNull)
     .custom(isIdValid).withMessage('Should have correct video channel id'),
@@ -146,8 +147,9 @@ const videosAddResumableInitValidator = getCommonVideoEditAttributes().concat([
     .withMessage('Should have a valid filename'),
   body('name')
     .trim()
-    .custom(isVideoNameValid)
-    .withMessage('Should have a valid name'),
+    .custom(isVideoNameValid).withMessage(
+      `Should have a video name between ${CONSTRAINTS_FIELDS.VIDEOS.NAME.min} and ${CONSTRAINTS_FIELDS.VIDEOS.NAME.max} characters long`
+    ),
   body('channelId')
     .customSanitizer(toIntOrNull)
     .custom(isIdValid).withMessage('Should have correct video channel id'),
@@ -196,7 +198,9 @@ const videosUpdateValidator = getCommonVideoEditAttributes().concat([
   body('name')
     .optional()
     .trim()
-    .custom(isVideoNameValid).withMessage('Should have a valid name'),
+    .custom(isVideoNameValid).withMessage(
+      `Should have a video name between ${CONSTRAINTS_FIELDS.VIDEOS.NAME.min} and ${CONSTRAINTS_FIELDS.VIDEOS.NAME.max} characters long`
+    ),
   body('channelId')
     .optional()
     .customSanitizer(toIntOrNull)
@@ -455,7 +459,11 @@ function getCommonVideoEditAttributes () {
     body('tags')
       .optional()
       .customSanitizer(toValueOrNull)
-      .custom(isVideoTagsValid).withMessage('Should have correct tags'),
+      .custom(isVideoTagsValid)
+      .withMessage(
+        `Should have an array of up to ${CONSTRAINTS_FIELDS.VIDEOS.TAGS.max} tags between ` +
+        `${CONSTRAINTS_FIELDS.VIDEOS.TAG.min} and ${CONSTRAINTS_FIELDS.VIDEOS.TAG.max} characters each`
+      ),
     body('commentsEnabled')
       .optional()
       .customSanitizer(toBooleanOrNull)