Hi David,
Em Tue, 30 Dec 2014 07:49:05 -0800
David Liontooth <lionteeth@xxxxxxxxxx> escreveu:
>
> OK, perfect; thank you. This should be documented in dvbv5-scan. And we
> should have a man page for it.
This is documented, and there is a man page for it:
dvbv5-scan(1) User Commands dvbv5-scan(1)
NAME
dvbv5-scan - DVBv5 tool for frequency scanning
SYNOPSIS
dvbv5-scan [OPTION]... initial-file
DESCRIPTION
dvbv5-scan is a command line frequency scanning tool for digital TV
services that is compliant with version 5 of the DVB API, and backward
compatible with the older v3 DVB API.
dvbv5-scan uses by default the new channel/service file format that it
is capable of supporting all types of Digital TV standards. It can also
support the legacy format used by the legacy dvb-apps.
A single physical channel (also called as transponder) may have several
virtual channels inside it, encapsulated via a MPEG Transport stream.
Those virtual channels are called as 'service' at the MPEG-TS terminol‐
ogy, and may have one or more audio, video and other types of elements
inside it.
The dvbv5-scan goal is to scan for a list of physical chan‐
nels/transponders and identify there the MPEG-TS services available.
The dvbv5-scan tool is smart enough to retrieve the information at the
MPEG-TS Network Information Table (NIT) about other channels available
on the stream.
OPTIONS
The following options are valid:
-3, --dvbv3
Force dvbv5-scan to use DVBv3 only.
-a, --adapter=adapter#
Use the given adapter. Default value: 0.
-d, --demux=demux#
Use the given demux. Default value: 0.
-f, --frontend=frontend#
Use the given frontend. Default value: 0.
-F, --file-freqs-only
Don't use the other frequencies discovered during scan. By
default, dvbv5-scan will find new transponder/physical channels
and add them at the internal frequency table it uses for scan.
This option disables such feature.
-G, --get_frontend
Use data from get_frontend on the output file. By default,
dvbv5-scan will repeat the same network parameters as found at
the scan file. This should work fine if the output file will be
used by the same frontend. However, if you intend to use the
generated file on another frontend, or wants a faster tuner,
this option can be used to store the actual detected parameters,
instead of the ones that came from the source channel file.
-I, --input-format=format
Format of the input file. Please notice that caps is ignored. It
can be:
channel - for dvb-apps compatible channel file;
zap - for dvb-apps compatible zap file;
dvbv5 (default) - for the dvbv5 apps format.
-l, --lnbf=LNBf_type
Type of LNBf to use 'help' lists the available ones.
-N, --nit
Use data from NIT table on the output file. By default,
dvbv5-scan will repeat the same network parameters as found at
the scan file. This should work fine if the output file will be
used by the same frontend. However, if you intend to use the
generated file on another frontend, or wants a faster tuner,
this option can be used to store the parameters that are
announced by the broadcaster via the MPEG-TS Network Information
Table (NIT), instead of the ones that came from the source chan‐
nel file.
-o, --output=file
output filename (default: dvb_channel.conf)
-O, --output-format=format
Output format:
channel - for dvb-apps compatible channel file;
zap - for dvb-apps compatible zap file;
vdr - for vdr compatible zap file;
dvbv5 (default) - for the dvbv5 apps format.
-p, --parse-other-nit
Parse the other NIT/SDT tables that could be found mainly on
some DVB-C carriers.
-S, --sat_number=satellite_number
Satellite number. Used only on satellite delivery systems. If
not specified, disable DISEqC satellite switch.
-T, --timeout-multiply=factor
Multiply the scan lock wait time and MPEG-TS table parsing by
this factor.
-U, --freq_bpf=frequency
SCR/Unicable band-pass filter frequency to use, in kHz. Used
only on satellite delivery systems.
-v, --verbose
Be (very) verbose. Useful to check if the MPEG-TS is happenning
fine. This option can be used multiple times to increase ver‐
bosity.
-w, --lna=LNA
Enable, disable or put LNA power in auto mode. Not all frontends
support it. Valid values are:
0 - disable
1 - enable
-1 - auto
-W, --wait=time
Adds additional wait time for DISEqC command completion.
-?, --help
Outputs the usage help.
--usage
Gives a short usage message.
-V, --version
Prints the program version.
Mandatory or optional arguments to long options are also mandatory or
optional for any corresponding short options.
NOTE
If both --nit and --get_frontend options are used at the same time, the
--nit parameters will be applied after the ones that the frontend
detected.
EXIT STATUS
On success, it returns 0.
EXAMPLE
$ dvbv5-scan /usr/share/dvbv5/dvb-c/the-brownfox
Scanning frequency #1 573000000
Lock (0x1f) Quality= Good Signal= 100.00% C/N= -13.80dB UCB= 0 postBER= 3.14x10^-3 PER= 0
Service The, provider (null): digital television
Service Quick, provider BrownFox: digital television
Service Brown, provider (null): digital television
Service Jumps, provider (null): digital television
…
Service Dog, provider (null): digital television
New transponder/channel found: #2: 579000000
…
New transponder/channel found: #39: 507000000
The scan process will then scan the other 38 discovered new transpon‐
ders, and generate a dvb_channel.com with several entries with will
have not only the physical channel/transponder info, but also the Ser‐
vice ID, and the corresponding audio/video/other program IDs (PID),
like:
[Quick]
SERVICE_ID = 5
VIDEO_PID = 288
AUDIO_PID = 289
FREQUENCY = 573000000
MODULATION = QAM/256
INVERSION = OFF
SYMBOL_RATE = 5247500
INNER_FEC = NONE
DELIVERY_SYSTEM = DVBC/ANNEX_A
BUGS
Report bugs to Linux Media Mailing List <linux-media@xxxxxxxxxxxxxxx>
COPYRIGHT
Copyright (c) 2011-2014 by Mauro Carvalho Chehab.
License GPLv2: GNU GPL version 2 <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
DVBv5 Utils 1.6.2 Fri Oct 3 2014 dvbv5-scan(1)
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