For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/multimedia:libs/openSUSE_Tumbleweed/multimedia:libs.repo
zypper refresh
zypper install libheif
For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/multimedia:libs/openSUSE_Slowroll/multimedia:libs.repo
zypper refresh
zypper install libheif
For openSUSE Factory PowerPC run the following as root:
zypper addrepo https://download.opensuse.org/repositories/multimedia:libs/openSUSE_Factory_PowerPC/multimedia:libs.repo
zypper refresh
zypper install libheif
For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/multimedia:libs/openSUSE_Factory_ARM/multimedia:libs.repo
zypper refresh
zypper install libheif
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/multimedia:libs/16.0/multimedia:libs.repo
zypper refresh
zypper install libheif