gstreamer-plugins-ugly from SUSE:SLE-15-SP2:Update project
Select Your Operating System
Add repository and install manually
For pool run the following as root:
zypper addrepo https://download.opensuse.org/repositories/SUSE:SLE-15-SP2:Update/pool/SUSE:SLE-15-SP2:Update.repo zypper refresh zypper install gstreamer-plugins-ugly