Video Thumbnails via UPnP

Hello,

Can anyone please tell me how to get thumbnails to show for videos via UPnP?

I currently already have a thumbnail file for every video which is labelled episode.jpg to match the file name and these always show when I use my DLNA client on my Samsung TV or if I view them through Media House on Android devices but they do not show up in Kodi.

How can I make Kodi show these thumbnails?

Thanks