How to make artwork for unknown files.



We have a bus, where we are using Kodi to play movies. Everything works perfect for all movies, but we have a problem with videos that is not in the imdb.
This includes our security-video, and a few other simple video’s.
Of course it is possible to access the files-section, but this is not very easy when the screen for the guide is very small and the bus is moving..
So it would be much easier if we could make a poster, fanart or banner, to make it easier to see!

Is there an easy way to make this possible? Our guides are tired of shoosing the wrong video 😉