I installed the Gem library from source and everything seemed to compiled correctly. When I open pd, I get the message:
[GEM:recordNDI] Please (re)install the NewTek NDI Runtimes to use this plugin. need to find the library 'libndi.so.4'
/snap/obs-studio/1185/usr/local/lib/libndi.so
/snap/obs-studio/1185/usr/local/lib/libndi.so.4
/snap/obs-studio/1185/usr/local/lib/libndi.so.4.5.3
/snap/obs-studio/1195/usr/local/lib/libndi.so
/snap/obs-studio/1195/usr/local/lib/libndi.so.4
/snap/obs-studio/1195/usr/local/lib/libndi.so.4.5.3
I guess Gem cannot find it there... Any suggestions?