1ALEVT-CAP(1) Teletext capture ALEVT-CAP(1)
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6 alevt-cap - simple capture of teletext pages
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10 alevt-cap [options] ppp[.ss] ...
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14 alevt-cap is a simple program to capture teletext pages and write them
15 to disk. You just give it a list of pages to fetch and it will save
16 them. Nothing fancy like time-outs, page ranges, or channel name
17 detection is supported. Though, it supports different file formats -
18 at the moment ascii, ansi (ascii with color escape sequences), html,
19 png, and ppm.
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23 A summary of options is included below.
24 -name filename
26 Gives the filename under which the pages should be saved. It
27 may contain a couple of %-sequences (see below). (default:
28 ttext-%s.%e)
29 -format format-specifier
31 Sets the file format used to save pages (see below). (default:
32 ascii)
33 -format list|help
35 Lists all known file formats and their options.
36 -vbi device
38 Use the given device name (default: /dev/vbi0).
39 -finetune -4..4|auto
41 Specify the fine tuning for the decoder. For the right value
42 play with alevt. Default: 1.
43 -timeout seconds
45 If the pages cannot be captured in seconds, the program termi‐
46 nates with exit status 1 after saving the already captured
47 pages. The default is to wait forever.
48 -charset latin-1|latin-2|russian
50 Selects the character set to use. Characters not present in the
51 selected set are replaced by similar looking symbols. (default:
52 latin-1)
53 --help Show summary of options.
55 --version
57 Show version of program.
58 Every non-option argument is taken as a page number. Subpages may be
60 given in the form ppp.ss where ppp is the page number and ss is the
61 subpage number. If no subpage is specified, the first transmitted sub‐
62 page of that page is taken. The page is saved with the prior given
63 format and name.
64 Filenames
67 The filename may contain %-sequences. The following sequences are
68 defined:
69 %% a single % sign.
71 %e the default extension of the selected output format.
73 %p the page number and an optional subpage number.
75 %P the page number.
77 %S the subpage number.
79 %s the page number as given on the command line.
81 Between the % sign and the letter you can give a field width to which
83 the replacement string should be padded.
84 Format specifiers
87 The output format and associated options are given by the format speci‐
88 fier. It is made up of one or more comma separated words. The first
89 word selects the output format and the others are options for that for‐
90 mat. There are common options valid for all output formats and format
91 specific (private) ones. Some options have the form of an assignment.
92 The order of the options is free. Only the format name itself must be
93 the first word. An example:
94 ansi,reveal,bg=none
96 The ansi is the format and reveal, and bg=none are options.
97 At the moment there are only two common options: reveal, and hide.
99 They control whether the hidden characters present in a page should be
100 shown in the output or not. The default is hide.
101 The special format string list (or help) will give you a list of all
103 supported output formats and their options.
104 (The ansi format is an alias for ascii,color.)
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109 If the program timed out and some pages are missing the exit status is
110 1. On fatal errors the exit status is 2.
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114 Before starting this program, you have to set the TV channel with
115 another program like xawtv of set-tv.
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119 /dev/vbi*
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123 alevt(1x), alevt-date(1),
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127 If you give a page number that is never transmitted the program will
128 not terminate.
129 Bug reports to <froese@gmx.de>.
131LINUX 1.6.2 ALEVT-CAP(1)