ndi: explicitly set tally to live

ndi.c

@@ -141,6 +141,7 @@ int main(int argc, char *argv[])
 
         ndi_opts.ip = argv[1];
         ndi_opts.port = argv[2];
+        ndi_opts.initial_tally_state = NDI_TALLY_LIVE;
 
         libndi_setup(ndi_ctx, &ndi_opts);