If you know that there is a new function "Adjust cover", I am sure that you have read in
" Action "Adjust cover" to resize cover art
Many hardware players have certain limitations on the size of cover art and then it's sometimes just nice to scale down this 10000x10000 cover to a reasonable size. You can also use this action type to convert from JPEG to PNG or vice versa. It's quite handy and I hope it improves your workflow."