dvbv5-scan

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dvbv5-scan is a command line frequency scanning tool for digital TV services. Its purpose is to attempt to locate the signals available on a digital TV tuner. Depending on the source, signals may be present on one or more of the possible channels, it is dvbv5-scan's purpose to find out which channels are actually in use.

dvbv5-scan scans for a list of physical channels/transponders and identifies if there is an MPEG Transport Stream (MPEG-TS) service available. A single "physical" channel (also called a transponder) may have multiple signals within it, encapsulated in MPEG-TS. Those virtual channels are called "services" in MPEG-TS terminology, and may have one or more audio/video/other elements inside. dvbv5-scan will also retrieve the information from the MPEG-TS Network Information Table (NIT) about the availablity of other channels in the stream. This information also includes the Service ID, which corresponds to the "station name" or "channel number" that you might find in a program listing or TV Guide.

dvbv5-scan looks for signals that are compliant with version 5 of the DVB API, and backward compatable with the older v3 DVB API. It was developed as part of DVBv5 Tools suite, which resides in the v4l-utils git repositiory [1]. It is based on a new channel/service file format that it is capable of supporting all types of DTV standards. It can also support the legacy format used by the legacy dvb-apps.

For other dvbv5 tools, please see the main article.

Example

$ dvbv5-scan ~/dvbc-test
Scanning frequency #1 573000000
Lock   (0x1f) Quality= Good Signal= 100.00% C/N= -13.80dB UCB= 0 postBER= 3.14x10^-3 PER= 0
Service SBT, provider (null): digital television
Service Globo, provider Globo: digital television
Service Record, provider (null): digital television
Service Band, provider (null): digital television
...
Service Trilhas Sonoras, provider (null): digital radio
New transponder/channel found: #2: 579000000
...
New transponder/channel found: #39: 507000000

The example above shows dvbv5-scan being asked to scan a list of channels, which it does and discovers a total of 38 channels. Note that each of these channels can have zero, one or multiple television signals encoded within it. For instance, in this case Channel 1 contains a video signal from a broadcaster known as "Globo", while Channel 2 is a digital radio channel known as "Trilhas Sonoras".

The output of the program is sent to the "db_channel.com" text file with several entries with will have not only the physical channel/transponder info, but also the Service ID, and the corresponding audio/video/other program IDs (PID), like:

[Globo]
	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

Parameters

There are several options that could be used on dvbv5-scan:

dvbv5-scan parameters
parameter meaning
-3, --dvbv3 Use DVBv3 only
-a, --adapter=adapter# use given adapter (default 0)
-d, --demux=demux# use given demux (default 0)
-f, --frontend=frontend# use given frontend (default 0)
-F, --file-freqs-only don't use the other frequencies discovered during scan
-G, --get_frontend use data from get_frontend on the output file
-I, --input-format=format Input format: CHANNEL, DVBV5 (default: DVBV5). The input format is case insensitive
-l, --lnbf=LNBf_type type of LNBf to use. 'help' lists the available ones. The LNBf model is case insensitive
-N, --nit use data from NIT table on the output file
-o, --output=file output filename (default: dvb_channel.conf)
-O, --output-format=format Output format: CHANNEL, ZAP, DVBV5 (default: DVBV5). The output format is case insensitive
-p, --parse-other-nit Parse the other NIT/SDT tables
-S, --sat_number=satellite_number satellite number. If not specified, disable DISEqC
-T, --timeout-multiply=factor Multiply scan timeouts by this factor
-U, --freq_bpf=frequency SCR/Unicable band-pass filter frequency to use, in kHz
-v, --verbose be (very) verbose
-w, --lna=LNA (0, 1, -1) enable/disable/auto LNA power
-W, --wait=time adds additional wait time for DISEqC command completion
-?, --help help
--usage Give a short usage message
-V, --version Print program version

Please notice that, for Satellite systems, the LNBf and other corresponding settings are needed. the supported LNBf models by dvbv5-scan and dvbv5-zap are:

UNIVERSAL
	Europe
	10800 to 11800 MHz and 11600 to 12700 MHz
	Dual LO, IF = lowband 9750 MHz, highband 10600 MHz

DBS
	Expressvu, North America
	12200 to 12700 MHz
	Single LO, IF = 11250 MHz

EXTENDED
	Astra 1E, European Universal Ku (extended)
	10700 to 11700 MHz and 11700 to 12750 MHz
	Dual LO, IF = lowband 9750 MHz, highband 10600 MHz

STANDARD
	Standard
	10945 to 11450 MHz
	Single LO, IF = 10000 MHz

ENHANCED
	Astra
	10700 to 11700 MHz
	Single LO, IF = 9750 MHz

C-BAND
	Big Dish - Monopoint LNBf
	3700 to 4200 MHz
	Single LO, IF = 5150 MHz

C-MULT
	Big Dish - Multipoint LNBf
	3700 to 4200 MHz
	Dual LO, Bandstacking, LO POL_R 5150 MHZ, LO POL_L 5750 MHz

DISHPRO
	DishPro LNBf
	12200 to 12700 MHz
	Dual LO, Bandstacking, LO POL_R 11250 MHZ, LO POL_L 14350 MHz

Other examples

example channel list:

[CHANNEL]
	DELIVERY_SYSTEM = DVBC/ANNEX_A
	FREQUENCY = 113000000
	SYMBOL_RATE = 6900000
	INNER_FEC = NONE
	MODULATION = QAM/64
	INVERSION = AUTO

[CHANNEL]
	DELIVERY_SYSTEM = DVBC/ANNEX_A
	FREQUENCY = 121000000
	SYMBOL_RATE = 6900000
	INNER_FEC = NONE
	MODULATION = QAM/64
	INVERSION = AUTO

[CHANNEL]
	DELIVERY_SYSTEM = DVBC/ANNEX_A
	FREQUENCY = 130000000
	SYMBOL_RATE = 6900000
	INNER_FEC = NONE
	MODULATION = QAM/256
	INVERSION = AUTO

[CHANNEL]
	DELIVERY_SYSTEM = DVBC/ANNEX_A
	FREQUENCY = 330000000
	SYMBOL_RATE = 6900000
	INNER_FEC = NONE
	MODULATION = QAM/256
	INVERSION = AUTO

[CHANNEL]
	DELIVERY_SYSTEM = DVBC/ANNEX_A
	FREQUENCY = 338000000
	SYMBOL_RATE = 6900000
	INNER_FEC = NONE
	MODULATION = QAM/256
	INVERSION = AUTO

[CHANNEL]
	DELIVERY_SYSTEM = DVBC/ANNEX_A
	FREQUENCY = 346000000
	SYMBOL_RATE = 6900000
	INNER_FEC = NONE
	MODULATION = QAM/256
	INVERSION = AUTO

example service list:

[Das Erste]
	SERVICE_ID = 28106
	VIDEO_PID = 101
	AUDIO_PID = 102 103 106
	PID_0b = 2171
	PID_06 = 105 104 84
	PID_05 = 2070
	FREQUENCY = 113000000
	MODULATION = QAM/64
	INVERSION = OFF
	SYMBOL_RATE = 6900000
	INNER_FEC = NONE
	DELIVERY_SYSTEM = DVBC/ANNEX_A

[Bayerisches FS Süd]
	SERVICE_ID = 28107
	VIDEO_PID = 201
	AUDIO_PID = 202 203 206
	PID_0b = 2171
	PID_06 = 204
	PID_05 = 2178
	FREQUENCY = 113000000
	MODULATION = QAM/64
	INVERSION = OFF
	SYMBOL_RATE = 6900000
	INNER_FEC = NONE
	DELIVERY_SYSTEM = DVBC/ANNEX_A

[hr-fernsehen]
	SERVICE_ID = 28108
	VIDEO_PID = 301
	AUDIO_PID = 302 303
	PID_0b = 2171
	PID_06 = 304
	PID_05 = 2270
	FREQUENCY = 113000000
	MODULATION = QAM/64
	INVERSION = OFF
	SYMBOL_RATE = 6900000
	INNER_FEC = NONE
	DELIVERY_SYSTEM = DVBC/ANNEX_A

[Bayerisches FS Nord]
	SERVICE_ID = 28110
	VIDEO_PID = 201
	AUDIO_PID = 202 203 206
	PID_0b = 2171
	PID_06 = 204
	PID_05 = 2178
	FREQUENCY = 113000000
	MODULATION = QAM/64
	INVERSION = OFF
	SYMBOL_RATE = 6900000
	INNER_FEC = NONE
	DELIVERY_SYSTEM = DVBC/ANNEX_A

[WDR Köln]
	SERVICE_ID = 28111
	VIDEO_PID = 601
	AUDIO_PID = 602 603
	PID_0b = 2171
	PID_06 = 604
	PID_05 = 2370
	FREQUENCY = 113000000
	MODULATION = QAM/64
	INVERSION = OFF
	SYMBOL_RATE = 6900000
	INNER_FEC = NONE
	DELIVERY_SYSTEM = DVBC/ANNEX_A

[Planet HD]
	SERVICE_ID = 50003
	VIDEO_PID = 6821
	AUDIO_PID = 6822
	FREQUENCY = 130000000
	MODULATION = QAM/256
	INVERSION = OFF
	SYMBOL_RATE = 6900000
	INNER_FEC = NONE
	DELIVERY_SYSTEM = DVBC/ANNEX_A

[13th Street HD]
	SERVICE_ID = 50004
	VIDEO_PID = 6831
	AUDIO_PID = 6832 6833
	FREQUENCY = 130000000
	MODULATION = QAM/256
	INVERSION = OFF
	SYMBOL_RATE = 6900000
	INNER_FEC = NONE
	DELIVERY_SYSTEM = DVBC/ANNEX_A

[ProSieben HD]
	SERVICE_ID = 50015
	VIDEO_PID = 6841
	AUDIO_PID = 6842
	PID_06 = 6844
	FREQUENCY = 130000000
	MODULATION = QAM/256
	INVERSION = OFF
	SYMBOL_RATE = 6900000
	INNER_FEC = NONE
	DELIVERY_SYSTEM = DVBC/ANNEX_A

Also See