DISPLAY
to get the default host and display number.
vfeedback6x
Simulates video feedback.
Usage
vfeedback [--display
host:display.screen]
[--visual
visual]
[--window]
[--root]
[--window-id
number]
[--tv-color
number]
[--tv-tint
number]
[--noise
number]
[--tv-brightness
number]
[--tv-contrast
number]
[--fps]
Overview
Simulates video feedback: pointing a video camera at an NTSC television.
Options
-
--visual visual -
Specify which visual to use. Legal values are the name of a visual class, or the id number (decimal or hex) of a specific visual.
-
--window -
Draw on a newly-created window. This is the default.
-
--root -
Draw on the root window.
-
--window-id number -
Draw on the specified window.
-
--tv-color number -
Color Knob. 0 - 1000. Default: 70.
-
--tv-tint number -
Tint Knob. 0 - 100. Default: 5.
-
--noise number -
Analog noise. 0.0 - 0.2. Default: 0.02.
-
--darken number -
Darken the looped image. 0.0 - 1.0. Default: 0.7.
-
--tv-brightness number -
Brightness Knob. 0.0 - 100.0. Default: 3.0.
-
--tv-contrast number -
Contrast Knob. 0 - 1500. Default: 1000.
-
--fps | --no-fps -
Whether to show a frames-per-second display at the bottom of the screen.
Environment
-
XENVIRONMENT -
to get the name of a resource file that overrides the global resources stored in the RESOURCE_MANAGER property.
-
XSCREENSAVER_WINDOW -
The window ID to use with --root.
Releases
4 releases since Debian 10 (Buster); the text changed 3 times.
--darken since Debian 12 (Bookworm);
--fps since Debian 12 (Bookworm);
--no-fps since Debian 12 (Bookworm);
--noise since Debian 12 (Bookworm);
--root since Debian 12 (Bookworm);
--tv-brightness since Debian 12 (Bookworm);
--tv-color since Debian 12 (Bookworm);
--tv-contrast since Debian 12 (Bookworm);
--tv-tint since Debian 12 (Bookworm);
--visual since Debian 12 (Bookworm);
--window since Debian 12 (Bookworm);
--window-id since Debian 12 (Bookworm).
-darken until Debian 11 (Bullseye);
-fps until Debian 11 (Bullseye);
-no-fps until Debian 11 (Bullseye);
-noise until Debian 11 (Bullseye);
-root until Debian 11 (Bullseye);
-tv-brightness until Debian 11 (Bullseye);
-tv-color until Debian 11 (Bullseye);
-tv-contrast until Debian 11 (Bullseye);
-tv-tint until Debian 11 (Bullseye);
-visual until Debian 11 (Bullseye);
-window until Debian 11 (Bullseye).