cover pictures in MP4 files
It's only possible to add one picture to MP4 / M4A files and it's always the front cover. The other values of the input fields in the "covr" form aren't applied to the list view. With MP3 files it works fine.
I'm using the MacOS version of Kid3 v3.7.1. MacOS 10.13.6 High Sierra.
Thank you for reviewing it. ;-)
Imported from SourceForge, author: jewoki