2 files changed, 22 insertions, 14 deletions

diff --git a/server/models/video/thumbnail.ts b/server/models/video/thumbnail.ts
index 6878a3155..3cad6c668 100644
--- a/server/models/video/thumbnail.ts
+++ b/server/models/video/thumbnail.ts
@@ -1,3 +1,4 @@
+import { remove } from 'fs-extra'
 import { join } from 'path'
 import {
   AfterDestroy,
@@ -12,15 +13,14 @@ import {
   Table,
   UpdatedAt
 } from 'sequelize-typescript'
-import { CONSTRAINTS_FIELDS, LAZY_STATIC_PATHS, STATIC_PATHS, WEBSERVER } from '../../initializers/constants'
+import { buildRemoteVideoBaseUrl } from '@server/helpers/activitypub'
+import { MThumbnailVideo, MVideoAccountLight } from '@server/types/models'
+import { ThumbnailType } from '../../../shared/models/videos/thumbnail.type'
 import { logger } from '../../helpers/logger'
-import { remove } from 'fs-extra'
 import { CONFIG } from '../../initializers/config'
+import { CONSTRAINTS_FIELDS, LAZY_STATIC_PATHS, STATIC_PATHS, WEBSERVER } from '../../initializers/constants'
 import { VideoModel } from './video'
 import { VideoPlaylistModel } from './video-playlist'
-import { ThumbnailType } from '../../../shared/models/videos/thumbnail.type'
-import { MVideoAccountLight } from '@server/types/models'
-import { buildRemoteVideoBaseUrl } from '@server/helpers/activitypub'
 
 @Table({
   tableName: 'thumbnail',
@@ -31,6 +31,10 @@ import { buildRemoteVideoBaseUrl } from '@server/helpers/activitypub'
     {
       fields: [ 'videoPlaylistId' ],
       unique: true
+    },
+    {
+      fields: [ 'filename', 'type' ],
+      unique: true
     }
   ]
 })
@@ -114,20 +118,23 @@ export class ThumbnailModel extends Model {
             .catch(err => logger.error('Cannot remove thumbnail file %s.', instance.filename, err))
   }
 
-  static loadByName (filename: string) {
+  static loadWithVideoByName (filename: string, thumbnailType: ThumbnailType): Promise<MThumbnailVideo> {
     const query = {
       where: {
-        filename
-      }
+        filename,
+        type: thumbnailType
+      },
+      include: [
+        {
+          model: VideoModel.unscoped(),
+          required: true
+        }
+      ]
     }
 
     return ThumbnailModel.findOne(query)
   }
 
-  static generateDefaultPreviewName (videoUUID: string) {
-    return videoUUID + '.jpg'
-  }
-
   getFileUrl (video: MVideoAccountLight) {
     const staticPath = ThumbnailModel.types[this.type].staticPath + this.filename
 
diff --git a/server/models/video/video.ts b/server/models/video/video.ts
index 14e80a3ba..3321deed3 100644
--- a/server/models/video/video.ts
+++ b/server/models/video/video.ts
@@ -130,6 +130,7 @@ import { VideoShareModel } from './video-share'
 import { VideoStreamingPlaylistModel } from './video-streaming-playlist'
 import { VideoTagModel } from './video-tag'
 import { VideoViewModel } from './video-view'
+import { v4 as uuidv4 } from 'uuid'
 
 export enum ScopeNames {
   AVAILABLE_FOR_LIST_IDS = 'AVAILABLE_FOR_LIST_IDS',
@@ -1827,7 +1828,7 @@ export class VideoModel extends Model {
   }
 
   generateThumbnailName () {
-    return this.uuid + '.jpg'
+    return uuidv4() + '.jpg'
   }
 
   getMiniature () {
@@ -1837,7 +1838,7 @@ export class VideoModel extends Model {
   }
 
   generatePreviewName () {
-    return this.uuid + '.jpg'
+    return uuidv4() + '.jpg'
   }
 
   hasPreview () {