ALEVT(T)                Teletext decoder               ALEVT(T)



NAME
       alevt - X11 Teletext browser


SYNOPSIS
       alevt [options]


DESCRIPTION
       alevt is an X11 program for browsing and searching Tele-
       text pages received by a compatible decoder (at the
       moment, bttv).


OPTIONS
       A summary of command line options is included below.  The
       X11 user interface is described in the built-in manual.

       -display display
           Where to display the windows.  Default: $DISPLAY.

       -geometry geometry
           Specifies the size and position of the windows.
           Default: 40x25.

       -vbi device
           Use the given device name.  Default: /dev/vbi.

       -finetune -4..4|auto
           Try some fine tuning if you have a lot of decoding
           errors (these lightning symbols).  This allows fine
           tuning of the decoder circuit.  The pre finetune
           behaviour was -finetune 0.  Default: 1.

       [-parent] ppp[.ss]
           Open a new window with the page number given by ppp
           and an optional subpage index given by ss.

           The -parent keyword is just for completeness and not
           normally used.  The pagenumber alone is sufficient.
           Default: 900.

       -child ppp[.ss]
           Open a new child window with the page number given by
           ppp and an optional subpage index given by ss.  About
           the concept of parent and child windows see the built-
           in manual.

       -erc/-noerc
           Enables/disables the error reduction code which sub-
           stitutes errors on a page by data from a previously
           received one.  Enabled by default.

       -bell/-nobell
           Enables/disables the error bell.  Normally enabled.

       -charset latin-1|latin-2
           Selects the character set to use.  Characters not pre-
           sent in the selected set are replaced by similar look-
           ing symbols.  (default: latin-1)

       --help
           Show summary of options.

       --version
           Show version of program.

       The order of options is important!  Each page number opens
       a new window with the previously given geometry, device,
       and display.  For example, to open two windows on the
       local display and one on display foo:0 you would start it
       with:

              alevt 100 300 -display foo:0 100

       Or, one window from /dev/vbi0 and one from /dev/vbi1
       (untested *g*):

              alevt -vbi /dev/vbi0 100 -vbi /dev/vbi1 100

       The -child options requires a parent window.  So, it must
       be preceeded by a parent or another child window.

       When saving pages alevt asks for a format string.  Look at
       alevt-cap(p).  The chapter Format Specifiers gives an
       explanation.

       alevt has no support to set or change the TV channel.
       This should be done with another (not supplied) program
       like xawtv or set-tv from the xawtv package.  Maybe in the
       future there will be a more sophisticated method in bttv
       to switch channels etc with a dedicated tuner application.
       But, at the moment, you have to live with it...


FILES
       /dev/vbi*


SEE ALSO
       alevt-date(e), alevt-cap(p), X(X), xawtv(v), and the
       built-in manual.


BUGS
       There are no known bugs.  If you find one, please report
       it to <froese@gmx.de>.

       It seems, the video capture drivers for linux become more
       stable.  But be very careful when using this program.
       Bugs in these kind of drivers have the tendency to result
       in really bad system failures.



LINUX                         1.6.0                     ALEVT(T)