[DanCooper]

@komplex: if you use the settings in screenshot you also have to enable "Stack <filename>", otherwise Kodi can't recognize "<filename>-fanart.jpg" and all other "<filename>-xy.ext" when the video file is multidisc.

Thank you but i don't use the Kodi interface

Kodi needs that, not the Kodi Interface. The Kodi Interface can send ANY filename to Kodi, but Kodi recognize only stacked file names if you let Kodi scan the sources.