I have Roku media player connecting to a DLNA server to play videos. I found that I could add cover art for the videos so I started to do that. It all works fine but the cover art is blurry when displayed in Roku media player menus. I found online that the cover art images should be 16:9 aspect ratio so I made them 1920x1080. I've also tried scaled down versions at 480x270 and 240x135 but they all are blurry. I tried searching for a suggested resolution for these images but could not find it. Any help or suggestions are greatly appreciated! Thanks.