Section: XScreenSaver manual (6)
Updated: 5.40 (12-Aug-2018)
xanalogtv - Simulate reception on an old analog TV set
] [-window] [-root] [-install]
shows a simulation of an old TV set showing test patterns and any
other images you have provided. It reproduces a wide range of TV
reception bummage: snow, bloom, ghosting, and loss of vertical and
horizontal sync. It also simulates the TV warming up. It will cycle
through 12 channels, some with images you give it, and some with color
bars or nothing but static.
The images that it uses will be grabbed from the portion of the screen
underlying the window, or from the system's video input, or from a
random file on disk, as indicated by the grabDesktopImages,
grabVideoFrames, and chooseRandomImages options in the
~/.xscreensaver file; see
for more details. It looks best with a video input or
your digital photo collection.
accepts the following options:
Draw on a newly-created window. This is the default.
Draw on the root window.
Install a private colormap for the window.
- -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.
Display the current frame rate and CPU load.
to get the default host and display number.
to get the name of a resource file that overrides the global resources
stored in the RESOURCE_MANAGER property.
Notable X resources supported include the following which correspond
to standard TV controls:
They range from 0 to 100, except for tint which is an angle
between -180 and +180.
Copyright © 2003 by Trevor Blackwell. 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.
Trevor Blackwell <firstname.lastname@example.org