GNU/Linux man pages

Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)


CentOS 2.1AS







xawtv-remote, v4lctl -- control video4linux devices


xawtv-remote [ options ] command
v4lctl [ options ] command


xawtv-remote and v4lctl can be used to control a video4linux driven TV card. xawtv-remote passes the command to a already running xawtv instance using X11 properties. v4lctl sets the parameters directly.


xawtv-remote knows the following options:


print a short help text

-d dpy

Set the X11 display

-i id

Set the Window ID.

v4lctl understands these options:


print a short help text

-c device

Set video4linux device.

-v n

Set debug level to n, where n = [0..2]


Both tools basically use the same set of commands. Some of them are useful for xawtv-remote only (fullscreen for example).
setstation [ <name> | <nr> | next | prev | back ]

Set the TV station. This selects on of the TV stations which are configured in the .xawtv config file. The argument can be the station name or a number (the first one listed in the config file is 0, ...). next/prev jumps to the next/previous station in the list, back to the previously selected one.

setchannel [ <name> | next | prev ]

Tune in some channel.

setfreqtab <table>

Set the frequency table. See the menu in xawtv for a list of valid choices.

setnorm <norm>

Set the TV norm (NTSC/PAL/SECAM).

setinput [ <input> | next ]

Set the video input (Television/Composite1/...)

capture [ on | off | overlay | grabdisplay ]

Set capture mode.

volume <n>
color <n>
hue <n>
bright <n>
contrast <n>

Set the parameter to the specified value. Range for all values is 0 <= n <= 65535. <n> can be either absolute (like "32768") or relative (marked by a sign, like "+1000" or "-512"). "inc" and "dec" are accepted too and increase/decrease the parameter by one percent. "volume" additionally accepts "mute".

snap [ jpeg | ppm ] [ full | win | widthxheight ] <filename>

Capture one image.

webcam <filename>

Capture one image. Does basically the same as "snap jpeg win <filename>". Works also while avi recording is active. It writes to a temporary file and renames it when done, so there is never a invalid file.

movie file <filename> | start | stop

control xawtv’s avi recorder.


Toggle fullscreen mode.

msg text

Display text on the on-screen display (window title / upper left corner in fullscreen mode).

vtx line1 line2 [ ... ]

Display subtitles. It pops up a small window at the bottom of the screen. It is supported to be used as interface for displaying subtitles (often on videotext page 150 in europe, thats why the name) by external programs.
Every command line argument is one line, zero lines removes the window. You can colorize the text with the control sequence "ESC foreground background". foreground/background has the range 0-7 (ansi term colors). Example: "\03347 hello world " is blue on white. "\033" must be a real escape character, the string does’nt work. With the bash you’ll get it with ^V ESC. vtx does also understand the ANSI tty escape sequences for color.


quit xawtv

keypad n

enter digit ’n’. That’s the two-digit channel selection, entering two digits within 5 seconds switches to the selected station. Useful for lirc.


xawtv(1), fbtv(1)


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


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 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, USA.