phonon4qt5-backend-gstreamer from home:X0F:branches:multimedia project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:X0F:branches:multimedia/openSUSE_Tumbleweed/home:X0F:branches:multimedia.repo zypper refresh zypper install phonon4qt5-backend-gstreamer