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xdtv_alevt-cap
Langue: en
Version: 1.6.1 (mandriva - 22/10/07)
Section: 1 (Commandes utilisateur)
NAME
xdtv_alevt-cap - simple capture of teletext pages (adapted to xdTV)SYNOPSIS
xdtv_alevt-cap [options] ppp[.ss] ...DESCRIPTION
xdtv_alevt-cap is a simple program to capture teletext pages and write them to disk. You just give it a list of pages to fetch and it will save them. Nothing fancy like time-outs, page ranges, or channel name detection is supported. Though, it supports different file formats - at the moment ascii, ansi (ascii with color escape sequences), html, png, and ppm.OPTIONS
A summary of options is included below.- -name filename
- Gives the filename under which the pages should be saved. It may contain a couple of %-sequences (see below). (default: ttext-%s.%e)
- -format format-specifier
- Sets the file format used to save pages (see below). (default: ascii)
- -format list|help
- Lists all known file formats and their options.
- -vbi device
- Use the given device name (default: /dev/vbi). For DVB, you may use /dev/dvb/adapter0/demux0 (for using the first DVB card, or /dev/dvb/adapter1/demux0 for the second, etc.)
- -progname thechannelname-pid number
- For DVB, specify which program (choose a program name) you want to select for teletext & its own PID number.
- -finetune -4..4|auto
- Specify the fine tuning for the decoder. For the right value play with alevt. Default: 1.
- -timeout seconds
- If the pages cannot be captured in seconds, the program terminates with exit status 1 after saving the already captured pages. The default is to wait forever.
- -charset latin-1|latin-2|koi8-r||koi||iso8859-7||el
- Selects the character set to use. Characters not present in the selected set are replaced by similar looking symbols. (default: latin-1)
- -fvbio/-nfvbio
- Enables/disables a vbi offset fixup. This error appears with the kernels >=2.6.16. Normally enabled.
- --help
- Show summary of options.
- --version
- Show version of program.
Every non-option argument is taken as a page number. Subpages may be given in the form ppp.ss where ppp is the page number and ss is the subpage number. If no subpage is specified, the first transmitted subpage of that page is taken. The page is saved with the prior given format and name.
Filenames
The filename may contain %-sequences. The following sequences are defined:-
- %%
- a single % sign.
- %e
- the default extension of the selected output format.
- %p
- the page number and an optional subpage number.
- %P
- the page number.
- %S
- the subpage number.
- %s
- the page number as given on the command line.
Between the % sign and the letter you can give a field width to which the replacement string should be padded.
Format specifiers
The output format and associated options are given by the format specifier. It is made up of one or more comma seperated words. The first word selects the output format and the others are options for that format. There are common options valid for all output formats and format specific (private) ones. Some options have the form of an assignment. The order of the options is free. Only the format name itself must be the first word. An example:- ansi,reveal,bg=none
- The ansi is the format and reveal, and bg=none are options.
At the moment there are only two common options: reveal, and hide. They control wether the hidden characters present in a page should be shown in the output or not. The default is hide.
The special format string list (or help) will give you a list of all supported output formats and their options.
(The ansi format is an alias for ascii,color.)
DIAGNOSTICS
If the program timed out and some pages are missing the exit status is 1. On fatal errors the exit status is 2.NOTE
Before starting this program, you have to set the TV channel with another program like xdtvFILES
/dev/vbi*SEE ALSO
xdtv_alevt(1),BUGS
If you give a page number that is never transmitted the program will not terminate.Bug reports to <froese@gmx.de>.
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