For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:xanders:branches:openSUSE:Factory/openSUSE_Tumbleweed/home:xanders:branches:openSUSE:Factory.repo
zypper refresh
zypper install obs-studio
For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:xanders:branches:openSUSE:Factory/openSUSE_Slowroll/home:xanders:branches:openSUSE:Factory.repo
zypper refresh
zypper install obs-studio