Cover art woes in music files

[Steve Freeman]

 

Maybe a thing you could check would be to find one of the problematic songs, in an album list, click the 3 vertical dots on the right hand side, and select 'edit images'.  It seems to bring up a dialog that shows the item's resolution, so you might be able to figure out which copy of an image file is being used.  It might allow you to choose between the embedded image and the one being used for the album.

I'm reasonably sure which artwork is being used when viewing tracks, at least viewing them from within the browser interface to Jellyfin. It's the 1400x1440 folder.jpg file...  I think I know this because I've got one test folder that Jellyfin can see, with two sub folders in it. One has a 1400x1400 folder.jpg file, and 9 mp3 tracks each with embedded cover art (at 220x220). The other folder is the same, except I have stripped the embedded cover art out of each of the 9 music files. When I view the music tracks on my media player's android app (Cambridge Audio StreamMagic), it's the folder-level files that are blurry - they are neither 1400x1400 nor 220x200, but look like very tiny files scaled up. When I select either of the folders containing the music files, I see a nice big, unblurred picture of the cover art.
In the browser interface to jellyfin, I can find any means to choose between artwork sizes - if you have any ideas about doing this it would be handy. Searching in the jellyfin folders for *.jpg, I can see a load of files with sizes 1400x1400, 480x480 and 48x48, the latter two presumably generated from my original "folder.jpg" files, so I suspect my blurred images (see screenshots in the original post) are the 48x48 ones that have been expanded by the StreamMagic app.  

The thing is that the images that Jellyfin stores on the PC, have unique identifiers and are stored in bunch of folders: "C:\ProgramData\Jellyfin\Server\cache\images\resized-images\", so it's tricky to work out what is used by a DLNA client (see pic) - I could break all sorts of things if I mess about with the cached files!

It may be a peculiarity of my client app - StreamMagic - which is the setup and control tool for streaming to my Evo media player, but at the same time, the exact same music folders display perfectly on the client app if I use Universal Media Server on the PC as a DLNA server, or Twonky on my NAS unit.  I'm wondering if some kind of client-confog is needed for my media player (is there any info on making such things?)

But thanks for your interest. I think Jellyfin can be made to work in my usage case, if I can tap into the key knowledge about image file usage somehow!