https://bugzilla.redhat.com/show_bug.cgi?id=1542884
--- Comment #6 from Pete Walter walter.pete@yandex.com --- I retired it in F29+. compat-libvpx4-1.6.1-1.fc28 was only intended as a temporary ABI compatibility layer for F28 and not to keep it around forever. VirtaulBox needs to get rebuilt on a newer Fedora to support F29.