vidni gismu

x1 is a video monitor/CRT/screen [machine] serving function x2.

See also skina, ve tivni.

In notes:

skina
x1 is a cinema/movie/film about x2 [plot/theme/subject/activity], filmmaker x3, for audience x4.
tivni
x1 broadcasts/televises programming x2 via medium/channel x3 to television receiver x4.
srimakyvelvei
v4=m1 is a magnetic tape/cassette storing v2 (data/facts/du'u) about v3 (object/event) in file(s) v1.