Dear maintainer The current ebuilds of media-video/vlc (2.2.1-r1, 2.2.4, 2.2.9999, 9999) have all a USE flag called 'media-library', which seems to do exactly nothing. I therefore suggest removing this USE flag from the ebuilds. Note: This USE flag is in addition masked by profiles/base/package.use.mask.
Thanks tiage, good catch, you are correct; I will include in next update of ebuilds. This change won't warrant a revbump.
USE flag removed in git.