> Please run the entire command (also the part after --) on one line > (see my follow-up mail).
> Anyway, both the GTK and CLI versions invoke MPV just fine here. > Could you try running both in a pure environment? Yes. Please find the following error. address@hidden ~ [env]$ gtk-youtube-viewer No protocol specified Gtk-WARNING **: cannot open display: :1 at /gnu/store/zy4mnhidqcnfdf1ci4dsafxyd14ck1in-perl-gtk2-1.24992/lib/perl5/site_perl/5.28.0/x86_64-linux-thread-multi/Gtk2.pm line 126.
