Phonon backend issues on KDE
Anarchy installs phonon-qt5-gstreamer
as a backend for Phonon. But KDE Apps (Dragon Player & Elisa) does not work properly with this backend unless it is selected via phonon-settings
and additional GStreamer codec is installed.
Upstream (KDE) prefers phonon-qt5-vlc
as Phonon backend which fixes this. So, phonon-qt5-vlc
should be included as Phonon backend instead of phonon-qt5-gstreamer
.
External Resource: Phonon on ArchWiki