Ubuntu Manpage: zvbi-atsc-cc - ATSC Closed Caption decoder

NAME

       zvbi-atsc-cc - ATSC Closed Caption decoder

SYNOPSIS

       zvbi-atsc-cc [ options ] [-n] station name

DESCRIPTION

       zvbi-atsc-cc  captures  ATSC  TV  transmissions  using a Linux DVB device and decodes the enclosed Closed
       Caption data. It can record both NTSC caption (EIA 608-B) and DTVCC caption (CEA 708-C).

OPTIONS

-? -h --help --usage
Print a short usage message.

-q --quiet
Suppress all progress and error messages.

-v --verbose
Increase verbosity.

Device options
-a number
--adapter-num number
Select a different DVB device to capture the signal (/dev/dvb/adapterN). The default is adapter 0.

-i number
--frontend-id number
Select a different frontend on the DVB device (/dev/dvb/adapterN/frontendM). Most devices have
only one frontend. The default is frontend 0.

-d number
--demux-id number
Select a different demultiplexer on the DVB device (/dev/dvb/adapterN/demuxM). Most devices have
only one demultiplexer. The default is demultiplexer 0.

-r number
--dvr-id number
Select a different DVR interface on the DVB device (/dev/dvb/adapterN/dvrM). Most devices have
only one DVR interface. The default is DVR interface 0.

-T
--ts Decode an MPEG-2 Transport Stream on standard input instead of opening a DVB device. This option
is mainly intended for debugging.

Since Transport Streams can contain multiple programs you must still specify one or more station
names, which zvbi-atsc-cc will look up in a channel configuration file to determine the Program ID
of the video elementary stream or streams it should extract. You should also add the --atsc option
to clarify that this is an ATSC TS and the program should expect an azap channel configuration
file, which is otherwise inferred from the DVB device capabilities.

Tuning options
-e file name
--channel-conf file name
To tune in a TV station zvbi-atsc-cc needs a channel configuration file. We use the config file of
the azap tuning tool from the linuxtv-dvb-apps package. You can create it with the scan tool from
the same package.

The azap channel configuration file is a text file which lists one station per line. Each line
contains six fields separated by a colon: The station name, the transponder frequency in Hz, the
modulation used (8VSB, 16VSB, QAM_64, QAM_256), the video stream PID, the audio stream PID, and
the service ID. Empty lines and lines starting with a number sign will be ignored.

This option selects a different channel configuration file. The default is
$HOME/.azap/channels.conf

-L --list
List all stations in the channel configuration file and their transponder frequency.

-n station name
--station station name
The station to tune in. Usually the -n can be omitted.

zvbi-atsc-cc can record caption from multiple stations at once if they share a transponder
frequency. Just specify multiple station names on the command line to enable this.

Caption options
With the caption and XDS options you specify which data zvbi-atsc-cc should extract. If multiple station
names are given these options apply to the succeeding station name. You must specify at least one of
these options for each station.

-c --cc
Print any received caption on standard output.

-C file name
--cc-file file name
Append any received caption to the specified file.

-l number
--channel number
Print NTSC Closed Caption channel 1, 2, 3 or 4 on standard output.

-1 ... -4 file name
--cc1-file ... --cc4-file file name
Filter out NTSC Closed Caption channel CC1 ... CC4 and append the text to the specified file. CC1
is the primary, CC3 the secondary caption service. If both services are transmitted CC1 usually
carries English, CC3 Spanish caption.

-5 ... -8 file name
--t1-file ... --t4-file file name
Filter out NTSC Text service T1 ... T4 and append the text to the specified file.

-9 ... -0 file name
--s1-file ... --s2-file file name
Filter out DTVCC service 1 or 2 and append the text to the specified file. Service 1 is the
primary, service 2 the secondary caption service. If both services are transmitted service 1
usually carries English, service 2 Spanish caption.

Digital TV stations are supposed to transmit language codes and other information about the
available caption services but these are not presently evaluated. zvbi-atsc-cc filters out text
which does not appear to be caption, such as tickers or vertically printed text.

-b --no-webtv
Do not print WebTV links.

-m --timestamps
Prepend timestamps YYYYMMDDHHMMSS to caption lines. This is the system time in the UTC timezone
when the text was captured, specifically the Carriage Return or Pop-On code responsible for
printing the line.

-S --stream-time
-Sdate --stream-time=date
Prepend timestamps YYYYMMDDHHMMSS to caption lines generated from the timestamps transmitted in
the video stream. If date is given, also in the format YYYYMMDDHHMMSS, it will be added to the
timestamps, otherwise the counter starts at 0001-01-01 00:00:00.

-s --sentences
Print caption one sentence at a time.

-j type
--format type
When type is "plain" zvbi-atsc-cc prints caption and XDS text without any markup. When type is
"vt100" it faithfully reproduces the caption foreground and background color, italic and underline
attributes by inserting VT.100 terminal control codes. With type "ntsc-cc" it mimics the output of
the ntsc-cc and zvbi-ntsc-cc tool. The default is "ntsc-cc".

zvbi-atsc-cc supports all Closed Caption character sets and converts to the encoding of the
current locale, usually UTF-8.

-p --plain
Same as -j plain

XDS options
-x --xds
Print all received XDS data on standard output.

-X file name
--xds-file file name
Filter out eXtended Data Service data (station name, program name, program rating etc.) and append
it as text to the specified file.

-f type[,type]*
--filter type[,type]*
Filter out specific XDS information: all, call (station call sign), desc (program synopsis),
length, network, rating, time, timecode, timezone, title. Multiple -f options accumulate. The
default is "all".

EXAMPLES

       zvbi-atsc-cc -c NJN-HD

       zvbi-atsc-cc --cc1-file wnyw.txt WNYW-DT --cc1-file wwor.txt WWOR-DT

       (NJN-HD, WNYW-DT and WWOR-DT are TV stations in New York. WNYW-DT
       and WWOR-DT can be captured simultaneously because they share a
       transponder frequency.)

       zvbi-atsc-cc --atsc --ts -c CNN < recorded-from-cnn.ts

FILES

       $HOME/.azap/channels.conf

AUTHORS

       Michael H. Schimek (mschimek AT users.sourceforge.net)
       timecop@japan.co.jp
       Mike Baker
       Mark K. Kim

COPYRIGHT

       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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

                                                                                                 zvbi-atsc-cc(1)