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CentOS 7.0 - man page for xvattr (centos section 1)

XVATTR(1)							   User Commands							 XVATTR(1)

NAME
xvattr - Query/Set X11 XVideo Setting(s)
SYNOPSIS
xvattr [options...] This program is used for getting and setting X11 Xv attributes such as XV_BRIGHTNESS, XV_CONTRAST, XV_SATURATION, XV_HUE, XV_COLORKEY, ... For this program to work, you must have a version of X11 with the XVideo extension and a graphics card that has Xv graphics acceleration. Note: On some cards XV_BRIGHTNESS and XV_CONTRAST are not listed among the available attributes, but they can still be set/changed. OPTIONS With no options, all parameters are displayed. Long options are handled by GNU getopts and follow those rules. In particular, options that are specified with a double dash (--) rather than a single dash (-), can be abbreviated as long as they are unique. Long parameters that need a value specified may have the parameter and the value separated with blank space or an optional equals sign (and no intervening space). For example the following are all equivalent: xvattr -a XV_BRIGHTNESS xvattr --attribute XV_BRIGHTNESS xvattr --att XV_BRIGHTNESS xvattr --att=XV_BRIGHTNESS Example: > xvattr Adaptor: 0 Name: Matrox G-Series Backend Scaler Port: 46 Name: XV_COLORKEY Flags: XvGettable XvSettable Min value: 0 Max value: 16777215 Current value: 66046 {-a | --attribute} attribute name Show value of attribute attribute name Example: > xvattr -a XV_BRIGHTNESS XV_BRIGHTNESS = 24 {-a | --attribute} attribute name [-v | --value] value Set attribute attribute name to value value. Example: > xvattr -a XV_COLORKEY -v 10 XV_COLORKEY set to 10 {-p | --port} port number Get the attribute on the specified port. If -p is not set, the first available port is used. Example: > xvattr -p 66 Found Xv 2.2 Adaptor: 0 Name: SIS Video Overlay Port: 66 Name: XV_COLORKEY Flags: XvGettable XvSettable Min value: 0 Max value: 16777215 Current value: 66046 Name: XV_BRIGHTNESS Flags: XvGettable XvSettable Min value: -128 Max value: 127 Current value: 0 Name: XV_CONTRAST Flags: XvGettable XvSettable Min value: 0 Max value: 255 Current value: 128
AUTHOR
Bjoern Englund. Send bug reports to "d4bjorn@dtek.chalmers.se" "rocky@panix.com" turned the README into this document.
SEE ALSO
See also xvinfo and XvQueryAdaptors, XvSetPortAttribute, and XvGetPortAttribute.
COPYRIGHT
Copyright (C) 2001-2002 Bjoern Englund This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA perl v5.16.3 2014-06-10 XVATTR(1)