v4l-conf man page on aLinux

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v4l-conf(1)							   v4l-conf(1)

NAME
       v4l-conf -  configure a video4linux driver

SYNOPSIS
       v4l-conf [ options ]

DESCRIPTION
       v4l-conf	 is  a	small  helper tool.  It figures out the video mode and
       framebuffer base	 address  of  the  graphics  board  and	 configures  a
       video4linux driver like bttv.  This is needed for drivers which can DMA
       the video over PCI directly into the video memory.

       Usually it is not required  to  use  v4l-conf  manually,	 xawtv(1)  and
       fbtv(1)	run it automatically at startup.  It might be useful for trou‐
       ble-shooting.  v4l-conf must be installed suid-root.

       v4l-conf knows three ways to get the informations:

	* Query the X-Server using  the	 XF86  DGA  extension.	 This  is  the
	  default if the DISPLAY environment variable is set.

	* Query the framebuffer driver.	 This is the default if DISPLAY is not
	  set.

	* Query the console driver.  This is used on mklinux only.

OPTIONS
       -h  Print a short description of all command line options.

       -q  Be quiet.

       -d dpy
	   Use the X11 display dpy to get the parameters.

       -f  Use the framebuffer driver to get the parameters.

       -c device
	   Set the video4linux device.

       -b n
	   enforce n bpp color depth.  Works for switching between  15/16  and
	   24/32 bpp.

       -s n
	   Shift the video display by n bytes.

       -a adr
	   Set	framebuffer  address to adr.  The value should be specified in
	   hex.	 This option is allowed for root only.	 You  can't  overwrite
	   the	autodetected  value,  this switch is only useful if autodetect
	   doesn't work because the X-Server lacks DGA support.	 You  can  put
	   this	 into  /etc/conf.modules, as "post-install bttv ..." for exam‐
	   ple.

BUGS
       Hope I havn't any security flaws in there.  If you find one, drop me  a
       note.  Mails with patches are preferred :-)

SEE ALSO
       xawtv(1), fbtv(1)

AUTHOR
       Gerd Knorr <kraxel@goldbach.in-berlin.de>

COPYRIGHT
       Copyright (C) 1997-99 Gerd Knorr <kraxel@goldbach.in-berlin.de>

       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 MER‐
       CHANTABILITY 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.,
       675 Mass Ave, Cambridge, MA 02139, USA.

			    (c) 1997-99 Gerd Knorr		   v4l-conf(1)
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