First of all the MusicBee is the best media player I've ever had. You are doing a great job.
MusicBee have option to add some artwork to video files in video node. I am trying to add artwork to my mkv, mp4 and webm video files but It give's me an error "A picture is corrupted, no longer exsist or is inaccessible".
I managed to add some artwork to my (mkv) files only with program called mp3tag but sadly in MusicBee it doesn't show the artwork picture.
I also managed to add some artwork to my mp4 files also program called mp3tag this one shows artwork beautifly in MusicBee.
Is it possible to give more capability for some video files in order to add some artwork.