I continued testings with separate QNAP-applications and noticed Video Station also show these re-generated thumbnails as well as QuMagie. Unfortunately, I noticed this method does not work as effectively with bigger folders (ie. Maybe You will now see few thumbnails?ģ) Select some another folder and do the same as in Step 2.Ĥ) Toggle between these folders and click Refresh Icon repeatedlyīy doing this I managed to build thumbnails one after another into couple of folders (size app. Try also to select one or two file(s) and hit Refresh again. Not sure, but this whole problem feels like some kind of problem with NAS's internal cache.ġ) Go to File Station and select a folder which does not have any thumbnails on videofiles.Ģ) Click several times Refresh-Icon which is located above Blue Snapshot button. Finally, after previous post on today I managed to get some positive results regarding thumbnail issue.