centos man page for xvattr

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)