We currently ship the phonon-backend-gstreamer for GStreamer 0.10. There's a branch for GStreamer 1.x: https://projects.kde.org/projects/kdesupport/phonon/phonon-gstreamer/repository/show?rev=1.0-porting-for-merge We should upgrade Rawhide's phonon-backend-gstreamer to a snapshot from that branch (or a release if it happens soon, dvratil?).
Built for Rawhide and F21 Branched.