vfeedback - Man Page

Simulates video feedback.

Synopsis

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]

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.

--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

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.

XSCREENSAVER_WINDOW

The window ID to use with --root.

See Also

X(1), xscreensaver(1)

Author

Jamie Zawinski.

Info

6.05-3.fc38 (06-Nov-2022) X Version 11 XScreenSaver manual