vfeedback
Section: XScreenSaver manual (6x)
Updated: 6.00-1.fc34 (02-Apr-2021)
Page Index
NAME
vfeedback - Simulates video feedback.
SYNOPSIS
vfeedback
[-display
host:display.screen]
[-visual
visual]
[-window]
[-root]
[-tv-color
number]
[-tv-tint
number]
[-noise
number]
[-tv-brightness
number]
[-tv-contrast
number]
[-fps]
DESCRIPTION
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.
- -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
- DISPLAY
-
to get the default host and display number.
- XENVIRONMENT
-
to get the name of a resource file that overrides the global resources
stored in the RESOURCE_MANAGER property.
SEE ALSO
X(1),
xscreensaver(1)
COPYRIGHT
Copyright © 2018 by Jamie Zawinski. Permission to use, copy, modify,
distribute, and sell this software and its documentation for any purpose is
hereby granted without fee, provided that the above copyright notice appear
in all copies and that both that copyright notice and this permission notice
appear in supporting documentation. No representations are made about the
suitability of this software for any purpose. It is provided "as is" without
express or implied warranty.
AUTHOR
Jamie Zawinski.