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fbtv(1) 										  fbtv(1)

       fbtv - a console program for watching TV

       fbtv [ options ] [ station name ]

       fbtv is a program for watching TV with your linux box.  It runs on top of a graphic frame-
       buffer device (/dev/fb0).  You'll need a new 2.1.x kernel to play with this.  fbtv  shares
       the config file ($HOME/.xawtv) with the xawtv application.  Check the xawtv(1) manpage for
       details about the config file format.

       -o base
	      set basestring for the snapshot output files.  The  filename  will  be  "base-time-

       -v     Be verbose.

       -c device
	      video4linux device (default is /dev/video0).

       -d device
	      framebuffer device (default is $FRAMEBUFFER; /dev/fb0 if unset)

       -g     grayscaled display (works for 256 color mode only)

       -s widthxheight
	      display the TV picture in width x height size in the upper right corner.

       -f font
	      font for text.  Default is to look for lat1-16.psf in /usr/lib/kbd/consolefonts and
	      /usr/share/consolefonts.	If you have a local  X11  font	server	running  (or  the
	      FONTSERVER  environment variable set to some working server), you can also give X11
	      font specs here.

       -m mode
	      video mode for TV.  fbtv will look up the mode in /etc/fb.modes.

       -j joydev
	      joystick device to use for controlling fbtv.

       -k     keep capture on when switching consoles.	Might be useful together with -s  switch,
	      you  have a video picture while working on another console.  This is more or less a
	      dirty hack.  Works only if all your consoles have the same  video  mode  and  fbcon
	      does not use panning to speed up scrolling.  For a multiheaded setup this is useful

       -q     quiet mode.  Doesn't reserve space for the status line at the top, doesn't  display
	      the status messages and clock.  You can toggle this at runtime too ('F').

       -M     EXPERIMENTAL:  Turn  on  backend scaler mode (write yuv to offscreen memory and let
	      the gfx board scale up the video).   Supported  hardware:  Matrox  G200/G400  (with
	      matroxfb)  and  ATI  Mach64  VT/GT  (with atyfb, 16bpp only).  You'll need at least
	      bttv-0.7.16 or kernel 2.3.50.

       fbtv is supported to work much like xawtv from user's  point  of  view.	 You  might  have
       noticed that xawtv has a lot of keyboard shortcuts.  They work in fbtv too (if it useful).
       Here is the list:

       G	    Grab picture (full size, ppm)
       J	    Grab picture (full size, jpeg)
       F	    Fullscreen.  Toggle quiet mode (see above).

       up/down	    tune up/down one channel
       left/right   fine tuning
       pgup/pgdown  station up/down

       ESC,Q	    Quit
       X	    Quit, but leave sound on.

       +/-	    Volume up/down
       Enter	    mute

       The channel hotkeys defined in $HOME/.xawtv are supported too, with one	exception:  modi-
       fier keys (something like "key = Ctrl+F1") do not work.

       Some hints from Dag Bakke <dag.bakke@riksnett.no>:

       The  BT8xx  cards can produce images up to 768x576 pixels.  In order to have fbtv make use
       of your entire monitor-size and get maximum image quality, you need to  create  a  768x576
       pixels  framebufferconsole.  This  can be accomplished with the fbset(1) utility, which is
       availabile at various locations.  See: http://www.cs.kuleuven.ac.be/~geert/bin/

       Or, you can let fbtv handle the videomode changes with the -m switch.  This requires  that
       you  have a small database with the various videomodes availabile. The file containing the
       videomodes is normally named /etc/fb.modes. For example, the following  entry  produces	a
       768x576x32bpp mode, with 75Hz refresh on a Matrox G200.

       mode "tv"
	   # D: 49.188 MHz, H: 46.580 kHz, V: 75.008 Hz
	   geometry 768 576 768 576 32
	   timings 20330 128 32 32 8 128 5

       The  command "fbtv -q -mtv" thus gives you crisp clear (well, as good as the received sig-
       nal anyway) tv on your entire screen. Alias this command to 'tv', and you're set.

       NB!  Please note that your monitor may or may not be able to handle such a "custom"  reso-
       lution.	And that misuse of the aforementioned fbset utility can toast your monitor. It is
       a lot easier to pull smoke out of electronic components, than to put it back in.

       A  database  of	 the   standard   VESA-modes   can   be   downloaded   from:   ftp://pla-


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

       Copyright (C) 1997,98 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  ver-
       sion 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., 675 Mass Ave,  Cambridge,  MA  02139,

				       (c) 1998 Gerd Knorr				  fbtv(1)
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