librtmp1 from home:X0F:DEPS 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:DEPS/openSUSE_Tumbleweed/home:X0F:DEPS.repo zypper refresh zypper install librtmp1