Add default playlist image

client/src/app/shared/video-playlist/video-playlist.model.ts

@@ -51,7 +51,12 @@ export class VideoPlaylist implements ServerVideoPlaylist {
     this.privacy = hash.privacy
 
     this.thumbnailPath = hash.thumbnailPath
-    this.thumbnailUrl = absoluteAPIUrl + hash.thumbnailPath
+
+    if (this.thumbnailPath) {
+      this.thumbnailUrl = absoluteAPIUrl + hash.thumbnailPath
+    } else {
+      this.thumbnailUrl = window.location.origin + '/client/assets/images/default-playlist.jpg'
+    }
 
     this.videosLength = hash.videosLength
 

server/controllers/api/video-playlist.ts

@@ -304,7 +304,7 @@ async function addVideoInPlaylist (req: express.Request, res: express.Response)
   })
 
   // If the user did not set a thumbnail, automatically take the video thumbnail
-  if (playlistElement.position === 1 && videoPlaylist.hasThumbnail() === false) {
+  if (videoPlaylist.hasThumbnail() === false) {
     logger.info('Generating default thumbnail to playlist %s.', videoPlaylist.url)
 
     const inputPath = join(CONFIG.STORAGE.THUMBNAILS_DIR, video.getMiniature().filename)