I recently upgraded from Mojave to Big Sur, and am having trouble adding artwork to tracks in the TV app. This script (or variations thereof) worked just fine in iTunes:
set theFile to choose file set trackArtwork to (read theFile as JPEG picture) set the clipboard to trackArtwork tell application "TV" set theTrack to item 1 of selection set data of artwork 1 of theTrack to trackArtwork end tell
With TV, I get this error message: error “TV got an error: Unknown object type.” number -1731
I know that the image is being read properly, because I can copy it onto the clipboard (as written above) and paste it manually into the track.
Any help would be greatly appreciated. Thanks.