Stretched Thumbnail fix?

I have a f5900 Samsung Bluray player read some other threads and I haven't seen a way to to fix the stretched thumbnails. I know it's samsungs fault for making the boxes square but is there anyway I could tell Serviio to add borders to the movie posters or change the their aspect ratio. I'm pretty sure Mezzmo can do it so is there a fix for Serviio?

btw I'm on Serviio 1.4, thanks.

actually now they seem almost the right aspect ratio (because i went from videos to all content on my bluray) except they are super blurry can i up the dpi or resolution in someway?

aaaaaaaaaaaaaaaamd im out keep it 3hunna i just found out about plex byye