1ALEVT(1x) Teletext decoder ALEVT(1x)
2
6 alevt - X11 Teletext browser
7
10 alevt [options]
11
14 alevt is an X11 program for browsing and searching Teletext pages re‐
15 ceived by a compatible decoder (at the moment, bttv).
16
19 A summary of command line options is included below. The X11 user in‐
20 terface is described in the built-in manual.
21 -display display
23 Where to display the windows. Default: $DISPLAY.
24 -geometry geometry
26 Specifies the size and position of the windows. Default: 41x25.
27 -vbi device
29 Use the given device name. Default: /dev/vbi, /dev/vbi0,
30 /dev/video0, /dev/dvb/adapter0/demux0 tried in this order.
31 -finetune -4..4|auto
33 Try some fine tuning if you have a lot of decoding errors (these
34 lightning symbols). This allows fine tuning of the decoder cir‐
35 cuit. The pre finetune behaviour was -finetune 0. Default: 1.
36 [-parent] ppp[.ss]
38 Open a new window with the page number given by ppp and an optional
39 subpage index given by ss.
40 The -parent keyword is just for completeness and not normally used.
42 The page number alone is sufficient. Default: 900.
43 -child ppp[.ss]
45 Open a new child window with the page number given by ppp and an
46 optional subpage index given by ss. About the concept of parent
47 and child windows see the built-in manual.
48 -erc/-noerc
50 Enables/disables the error reduction code which substitutes errors
51 on a page by data from a previously received one. Enabled by de‐
52 fault.
53 -bell/-nobell
55 Enables/disables the error bell. Normally enabled.
56 -charset latin-1|latin-2|koi8-r|iso8859-7
58 Selects the character set to use. Characters not present in the
59 selected set are replaced by similar looking symbols. (default:
60 latin-1)
61 -progname name
63 Specifies the program name if using the DVB interface.
64 -pid pid
66 Specifies the teletext PID if using the DVB interface.
67 -doublefont/-df
69 Instructs alevt to use double sized fonts.
70 --help
72 Show summary of options.
73 --version
75 Show version of program.
76 The order of options is important! Each page number opens a new window
78 with the previously given geometry, device, and display. For example,
79 to open two windows on the local display and one on display foo:0 you
80 would start it with:
81 alevt 100 300 -display foo:0 100
83 Or, one window from /dev/vbi0 and one from /dev/vbi1 (untested *g*):
85 alevt -vbi /dev/vbi0 100 -vbi /dev/vbi1 100
87 The -child options requires a parent window. So, it must be preceded
89 by a parent or another child window.
90 When saving pages alevt asks for a format string. Look at alevt-
92 cap(1). The chapter Format Specifiers gives an explanation.
93 alevt has no support to set or change the TV channel. This should be
95 done with another (not supplied) program like xawtv or set-tv from the
96 xawtv package. Maybe in the future there will be a more sophisticated
97 method in bttv to switch channels etc with a dedicated tuner applica‐
98 tion. But, at the moment, you have to live with it...
99 The -progname or -pid option specifies the program or teletext PID if
101 using the DVB interface.
102 If neither of these two options is used, alevt outputs informations
104 about the currently accessible streams and uses the first of these PIDs
105 as default. This output contains the PIDs and names that can be used as
106 an input for the -progname or -pid option in the context of the cur‐
107 rently chosen TV channel.
108
111 /dev/vbi*
112 /dev/dvb/adapter*/demux*
114
117 Select the teletext stream by the PID hex value:
118 alevt -vbi /dev/dvb/adapter0/demux0 -pid 0x0237
120 Select the teletext stream by the PID decimal value:
122 alevt -vbi /dev/dvb/adapter0/demux0 -pid 567
124 Select the teletext stream by the program name:
126 alevt -vbi /dev/dvb/adapter0/demux0 -progname ´kabel eins´
128
130 alevt-date(1), alevt-cap(1), X(3x), xawtv(1x), and the built-in manual.
131
134 Bug reports to <https://gitlab.com/alevt/alevt>.
135LINUX 1.8.1 ALEVT(1x)