question for mediaplayer

hi, just a quick question. in my tv show folder, which i categorized as “tv shows”, it seems that media player assigns randomly for some episodes the correct metadata cover art, and some other episodes just  a thumbnail or screenshot of the show.  why can’t i have all the cover art? why is it some shows instead display some screenshot of the show? in my plex library, the same shows all are showing the correct cover art…



Something very similar happens to me, i posted my case on But the cover for tv show does not work at all for me and on movies folder it does

anyone has info on that?