WeTek Community Forum

[TUTORIAL] Using w_scan on DVB-T/T2/C

rot30rot30 Posts: 850WeTek Community Member
This step by step tutorial is going to help you use the "w_scan" terminal application in order to obtain a list of tunable DVB-T, DVB-T2 or DVB-C channels from your DVB-T/T2/C tuner module. This list can, hopefully, later be used with VDR (The (Linux) Video Disk Recorder) in Kodi on OpenELEC running on the WeTek Play.

First things first, plug in your antenna cable or the cable from your cable provider into the "IN" connector of your DVB-T/T2/C module on your WeTek Play, insert the SD card with OpenELEC, if it's not installed to NAND, and turn on your device.

Wait until OpenELEC boots.

Make sure you have an active internet connection on your device for the next step. If not, you will have to install w_scan from a zip file.
Now you will install the w_scan terminal application.
This can be done by first installing and enabling the "Unofficial OpenELEC (WeTek_Play/arm) Add-ons" at "System/Settings->Add-ons->Get Add-ons->OpenELEC Mediacenter OS Add-ons->Add-on repository".

Uno_OE_WTPa_Ao_dir.png

Uno_OE_WTPa_Ao.png

Then go into "System/Settings->Add-ons->Get Add-ons->All Add-ons->Program Add-ons" and scrolling down the menu (almost until the end) until we get to "w_scan".

w_scan_NI.png

Now install and enable w_scan.

w_scan_I.png

If you try to run the application from the GUI you will receive an error stating: "This is a console-only addon".

CO_err.png

This means we can't run the application directly from here. And since OpenELEC has no virtual or graphical terminals available we are going to have to use a remote terminal on another computer through SSH.

Now that we have access to a CLI on our WeTek Play we can proceed to use w_scan. But first we must turn off any PVR that might be ocupying the DVB modules resources or else we will get an error message like the one bellow.
w_scan
##*information*##
##*information*##
##*information*##
main:3904: FATAL: ***** NO USEABLE CABLE CARD FOUND. *****
Please check wether dvb driver is loaded and
verify that no dvb application (i.e. vdr) is running.

Now you can try w_scan.
OpenELEC:~ # w_scan
w_scan 
w_scan version 20141122 (compiled for DVB API 5.10)
WARNING: could not guess your country. Falling back to 'DE'
guessing country 'DE', use -c <country> to override
using settings for GERMANY
DVB aerial
DVB-T Europe
scan type TERRESTRIAL, channellist 4
output format vdr-2.0
WARNING: could not guess your codepage. Falling back to 'UTF-8'
output charset 'UTF-8', use -C <charset> to override
Info: using DVB adapter auto detection.
	/dev/dvb/adapter0/frontend0 -> TERRESTRIAL "CXD2837 DVB-C DVB-T/T2": very good :-))

Using TERRESTRIAL frontend (adapter /dev/dvb/adapter0/frontend0)
-_-_-_-_ Getting frontend capabilities-_-_-_-_ 
Using DVB API 5.10
frontend 'CXD2837 DVB-C DVB-T/T2' supports
DVB-T2
INVERSION_AUTO
QAM_AUTO
TRANSMISSION_MODE_AUTO
GUARD_INTERVAL_AUTO
HIERARCHY_AUTO
FEC_AUTO
FREQ (47.00MHz ... 865.00MHz)
-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ 
Scanning DVB-T...
Scanning 7MHz frequencies...
177500: (time: 00:00.029) 
184500: (time: 00:02.048) 
191500: (time: 00:04.077) 
198500: (time: 00:06.096) 
205500: (time: 00:08.115) 
212500: (time: 00:10.134) 
219500: (time: 00:12.153) 
226500: (time: 00:14.172) 
Scanning 8MHz frequencies...
474000: (time: 00:16.191) 
482000: (time: 00:18.210) 
490000: (time: 00:20.229) 
498000: (time: 00:22.248) 
506000: (time: 00:24.277) 
514000: (time: 00:26.296) 
522000: (time: 00:28.315) 
530000: (time: 00:30.334) 
538000: (time: 00:32.353) 
546000: (time: 00:34.372) 
554000: (time: 00:36.391) 
562000: (time: 00:38.411) 
570000: (time: 00:40.441) 
578000: (time: 00:42.461) 
586000: (time: 00:44.481) 
594000: (time: 00:46.511) 
602000: (time: 00:48.531) 
610000: (time: 00:50.551) 
618000: (time: 00:52.571) 
626000: (time: 00:54.591) 
634000: (time: 00:56.611) 
642000: (time: 00:58.631) 
650000: (time: 01:00.651) 
658000: (time: 01:02.671) 
666000: (time: 01:04.691) 
674000: (time: 01:06.711) 
682000: (time: 01:08.741) 
690000: (time: 01:10.761) 
698000: (time: 01:12.781) 
706000: (time: 01:14.801) 
714000: (time: 01:16.821) 
722000: (time: 01:18.841) 
730000: (time: 01:20.861) 
738000: (time: 01:22.881) 
746000: (time: 01:24.901) 
754000: (time: 01:26.921) 
762000: (time: 01:28.951) 
770000: (time: 01:30.971) 
778000: (time: 01:32.991) 
786000: (time: 01:35.011) 
794000: (time: 01:37.031) 
802000: (time: 01:39.051) 
810000: (time: 01:41.071) 
818000: (time: 01:43.101) 
826000: (time: 01:45.121) 
834000: (time: 01:47.141) 
842000: (time: 01:49.161) 
850000: (time: 01:51.181) 
858000: (time: 01:53.201) 
Scanning DVB-T2...
Scanning 7MHz frequencies...
177500: (time: 01:55.231) 
184500: (time: 01:57.261) 
191500: (time: 01:59.281) 
198500: (time: 02:01.311) 
205500: (time: 02:03.331) 
212500: (time: 02:05.351) 
219500: (time: 02:07.371) 
226500: (time: 02:09.391) 
Scanning 8MHz frequencies...
474000: (time: 02:11.411) 
482000: (time: 02:13.431) 
490000: (time: 02:15.451) 
498000: (time: 02:17.471) 
506000: (time: 02:19.491) 
514000: (time: 02:21.511) 
522000: (time: 02:23.531) 
530000: (time: 02:25.551) 
538000: (time: 02:27.571) 
546000: (time: 02:29.591) 
554000: (time: 02:31.611) 
562000: (time: 02:33.631) 
570000: (time: 02:35.651) 
578000: (time: 02:37.671) 
586000: (time: 02:39.691) 
594000: (time: 02:41.711) 
602000: (time: 02:43.731) 
610000: (time: 02:45.761) 
618000: (time: 02:47.781) 
626000: (time: 02:49.801) 
634000: (time: 02:51.821) 
642000: (time: 02:53.841) 
650000: (time: 02:55.871) 
658000: (time: 02:57.891) 
666000: (time: 02:59.911) 
674000: (time: 03:01.931) 
682000: (time: 03:03.951) 
690000: (time: 03:05.971) 
698000: (time: 03:07.991) 
706000: (time: 03:10.011) 
714000: (time: 03:12.031) 
722000: (time: 03:14.051) 
730000: (time: 03:16.071) 
738000: (time: 03:18.091) 
746000: (time: 03:20.111) 
754000: (time: 03:22.131) 
762000: (time: 03:24.151) 
770000: (time: 03:26.171) 
778000: (time: 03:28.191) 
786000: (time: 03:30.211) 
794000: (time: 03:32.231) 
802000: (time: 03:34.251) 
810000: (time: 03:36.271) 
818000: (time: 03:38.311) 
826000: (time: 03:40.331) 
834000: (time: 03:42.351) 
842000: (time: 03:44.371) 
850000: (time: 03:46.391) 
858000: (time: 03:48.411) 

ERROR: Sorry - i couldn't get any working frequency/transponder
 Nothing to scan!!

While this command might give acceptable output to someone who needs a list of DVB-T/T2 channels in Germany, what if your on cable or you don't live in Germany (like me)?
The module is a DVB-T/T2/C tuner module, so how do you get a valid list of DVB-C channels?
In this case the programs default behavior is insufficient for your needs.

w_scan being a terminal application uses a CLI feature to modify it's own behavior and expand functionality. This feature is called options, flags or switches. Using them we can specify the parameters under which the program will operate.

Example:
OpenELEC:~ # w_scan -X -f c -c BA
w_scan -X -f c -c BA 
w_scan version 20141122 (compiled for DVB API 5.10)
using settings for BOSNIA AND HERZEGOVINA
Country identifier BA not defined. Using defaults.
scan type CABLE, channellist 4
output format czap/tzap/szap/xine
WARNING: could not guess your codepage. Falling back to 'UTF-8'
output charset 'UTF-8', use -C <charset> to override
Info: using DVB adapter auto detection.
	/dev/dvb/adapter0/frontend0 -> CABLE "CXD2837 DVB-C DVB-T/T2": very good :-))

Using CABLE frontend (adapter /dev/dvb/adapter0/frontend0)
-_-_-_-_ Getting frontend capabilities-_-_-_-_ 
Using DVB API 5.10
frontend 'CXD2837 DVB-C DVB-T/T2' supports
INVERSION_AUTO
QAM_AUTO
FEC_AUTO
FREQ (47.00MHz ... 865.00MHz)
This dvb driver is *buggy*: the symbol rate limits are undefined - please report to linuxtv.org
-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ 
474000: sr6900 (time: 00:00.020)         signal ok:	QAM_AUTO f = 474000 kHz S6900C999  (0:0:0)
        QAM_AUTO f = 474000 kHz S6900C999  (0:0:0) : updating transport_stream_id: -> (0:0:2)
        QAM_AUTO f = 474000 kHz S6900C999  (0:0:2) : updating network_id -> (0:1:2)
undefined inner fec
        new transponder: (QAM_64   f = 370000 kHz S6875C999  (3:1:4)) 0x4044
482000: sr6900 (time: 00:00.950)         signal ok:	QAM_AUTO f = 482000 kHz S6900C999  (0:0:0)
        QAM_AUTO f = 482000 kHz S6900C999  (0:0:0) : updating transport_stream_id: -> (0:0:2)
        QAM_AUTO f = 482000 kHz S6900C999  (0:0:2) : updating network_id -> (0:1:2)
undefined inner fec
[2:06:38 PM] live:snifferdsx: is the output format czap/tzap/szap/xine
oke ?
[2:07:30 PM] Miran Maslo: BHT1(DTV HS-M&H):722000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:1026:1025:30
BHT1 SD(DTV HS-M&H):722000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:2025:2026:31
FTV(DTV HS-M&H):722000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:770:771:40
TVSA(DTV HS-M&H):722000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:338:337:50
Pink BH(DTV HS-M&H):722000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:402:671:80
RTRS(DTV HS-M&H):722000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:513:514:82
NTV IC Kakanj(DTV HS-M&H):722000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:258:257:165
Pink(DTV HS-M&H):722000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:803:804:1200
RTV BN(DTV HS-M&H):730000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:386:387:135
Atlas(DTV HS-M&H):730000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:133:134:138
MKTV(DTV HS-M&H):730000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:330:377:155
SLO-TV1        (DTV HS-M&H):730000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:200:201:157
Animal Planet(DTV HS-M&H):730000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:282:283:200
Discovery Channel(DTV HS-M&H):730000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:400:401:210
N1(DTV HS-M&H):730000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:233:333:655
Al Jazeera Balkans(DTV HS-M&H):730000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:408:409:658
Arte(DTV HS-M&H):730000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:322:344:705
Cinema TV(DTV HS-M&H):738000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:49:51:427
Eurochannel(DTV HS-M&H):738000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:458:459:465
Hayat Music(DTV HS-M&H):738000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:34:37:634
Hayat Folk(DTV HS-M&H):738000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:256:36:635
RTL2(DTV HS-M&H):738000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:166:128:735
Pro Sieben(DTV HS-M&H):738000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:511:515:745
Pink Kids(DTV HS-M&H):738000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:816:817:1210
Pink Premium(DTV HS-M&H):738000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:826:827:1230
Pink Comedy(DTV HS-M&H):738000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:895:896:1245
TV1(DTV HS-M&H):746000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:514:513:75
Alfa TV(DTV HS-M&H):746000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:404:405:85
Face TV(DTV HS-M&H):746000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:311:411:87
Viasat Explorer(DTV HS-M&H):746000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:381:412:183
Viasat History(DTV HS-M&H):746000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:392:396:186
K1(DTV HS-M&H):746000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:2048:8001:590
Chasse et Peche(DTV HS-M&H):746000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:303:304:912
Pink Reality(DTV HS-M&H):746000000:INVERSION_AUTO:6900000:FEC_AUTO:QAM_AUTO:891:892:1330
Done, scan time: 04:04.610

As you can see in the program output we have specified DVB-C tuning (line 5) in Bosnia & Herzegovina (line 4) and xine compatible output format (line 6) by using flags.

To view all the available options use:
w_scan -h

usage: w_scan [options...] 
       -f type, --frontend type
               What programs do you want to search for?
               a = atsc (vsb/qam)
               c = cable 
               s = sat 
               t = terrestrian [default]
       -A N, --atsc_type N
               specify ATSC type
               1 = Terrestrial [default]
               2 = Cable
               3 = both, Terrestrial and Cable
       -c, --country
               choose your country here:
                       DE, GB, US, AU, ..
                       ? for list
               
       -s, --satellite
               choose your satellite here:
                       S19E2, S13E0, S15W0, ..
                       ? for list
               ---output switches---
       -G, --output-dvbsrc
               generate channels.conf for dvbsrc plugin
       -L, --output-VLC
               generate VLC xspf playlist (experimental)
       -M, --output-mplayer
               mplayer output instead of vdr channels.conf
       -X, --output-xine
               tzap/czap/xine output instead of vdr channels.conf
       -x, --output-initial
               generate initial tuning data for (dvb-)scan
       -Z, --output-xml
               generate w_scan XML tuning data
       -H, --extended-help
               view extended help (experts only)


You must be careful with the command syntax. It is case sensitive! And especially careful around the "-f" and "-c" flags! While the other flags modify program behavior by their very presence (for example "-X" sets xine compatible format output, no "-X" reverts to default behavior (vdr-2.0 compatible output)), the "-f" and "-c" flags need a parameter specified right after them to modify the programs behavior. They can be separated by a ' ' (space) but don't have to if your not going to use "combined flag". Just make sure that they are either both separated or both not separated by spaces! Otherwise you can expect an error message or unpredictable behavior.

In this case the "-f" flag allows you to chose between "t - terrestrial (default)" and "c - cable".
usage: w_scan [options...]
       -f type, --frontend type
               What programs do you want to search for?
               a = atsc (vsb/qam)
               c = cable
               s = sat
               t = terrestrian [default]

And the "-c" flag allows us to specify a country by it two letter code.
w_scan -c?

	AF		AFGHANISTAN
	AX		?LAND ISLANDS
	AL		ALBANIA
	DZ		ALGERIA
	AS		AMERICAN SAMOA
	AD		ANDORRA
	AO		ANGOLA
	AI		ANGUILLA
	AQ		ANTARCTICA
	AG		ANTIGUA AND BARBUDA
	AR		ARGENTINA
	AM		ARMENIA
	AW		ARUBA
	AU		AUSTRALIA
	AT		AUSTRIA
	AZ		AZERBAIJAN
	BS		BAHAMAS
	BH		BAHRAIN
	BD		BANGLADESH
	BB		BARBADOS
	BY		BELARUS
	BE		BELGIUM
	BZ		BELIZE
	BJ		BENIN
	BM		BERMUDA
	BT		BHUTAN
	BO		BOLIVIA
	BQ		BONAIRE
	BA		BOSNIA AND HERZEGOVINA
	BW		BOTSWANA
	BV		BOUVET ISLAND
	BR		BRAZIL
	IO		BRITISH INDIAN OCEAN TERRITORY
	BN		BRUNEI DARUSSALAM
	BG		BULGARIA
	BF		BURKINA FASO
	BI		BURUNDI
	KH		CAMBODIA
	CM		CAMEROON
	CA		CANADA
	CV		CAPE VERDE
	KY		CAYMAN ISLANDS
	CF		CENTRAL AFRICAN REPUBLIC
	TD		CHAD
	CL		CHILE
	CN		CHINA
	CX		CHRISTMAS ISLAND
	CC		COCOS (KEELING) ISLANDS
	CO		COLOMBIA
	KM		COMOROS
	CG		CONGO
	CD		CONGO, THE DEMOCRATIC REPUBLIC OF THE
	CK		COOK ISLANDS
	CR		COSTA RICA
	CI		C?TE D'IVOIRE
	HR		CROATIA
	CU		CUBA
	CW		CURA?AO
	CY		CYPRUS
	CZ		CZECH REPUBLIC
	DK		DENMARK
	DJ		DJIBOUTI
	DM		DOMINICA
	DO		DOMINICAN REPUBLIC
	EC		ECUADOR
	EG		EGYPT
	SV		EL SALVADOR
	GQ		EQUATORIAL GUINEA
	ER		ERITREA
	EE		ESTONIA
	ET		ETHIOPIA
	FK		FALKLAND ISLANDS (MALVINAS)
	FO		FAROE ISLANDS
	FJ		FIJI
	FI		FINLAND
	FR		FRANCE
	GF		FRENCH GUIANA
	PF		FRENCH POLYNESIA
	TF		FRENCH SOUTHERN TERRITORIES
	GA		GABON
	GM		GAMBIA
	GE		GEORGIA
	DE		GERMANY
	GH		GHANA
	GI		GIBRALTAR
	GR		GREECE
	GL		GREENLAND
	GD		GRENADA
	GP		GUADELOUPE
	GU		GUAM
	GT		GUATEMALA
	GG		GUERNSEY
	GN		GUINEA
	GW		GUINEA-BISSAU
	GY		GUYANA
	HT		HAITI
	HM		HEARD ISLAND AND MCDONALD ISLANDS
	VA		HOLY SEE (VATICAN CITY STATE)
	HN		HONDURAS
	HK		HONG KONG
	HU		HUNGARY
	IS		ICELAND
	IN		INDIA
	ID		INDONESIA
	IR		IRAN, ISLAMIC REPUBLIC OF
	IQ		IRAQ
	IE		IRELAND
	IM		ISLE OF MAN
	IL		ISRAEL
	IT		ITALY
	JM		JAMAICA
	JP		JAPAN
	JE		JERSEY
	JO		JORDAN
	KZ		KAZAKHSTAN
	KE		KENYA
	KI		KIRIBATI
	KP		KOREA, DEMOCRATIC PEOPLE'S REPUBLIC OF
	KR		KOREA, REPUBLIC OF
	KW		KUWAIT
	KG		KYRGYZSTAN
	LA		LAO PEOPLE'S DEMOCRATIC REPUBLIC
	LV		LATVIA
	LB		LEBANON
	LS		LESOTHO
	LR		LIBERIA
	LY		LIBYAN ARAB JAMAHIRIYA
	LI		LIECHTENSTEIN
	LT		LITHUANIA
	LU		LUXEMBOURG
	MO		MACAO
	MK		MACEDONIA, THE FORMER YUGOSLAV REPUBLIC OF
	MG		MADAGASCAR
	MW		MALAWI
	MY		MALAYSIA
	MV		MALDIVES
	ML		MALI
	MT		MALTA
	MH		MARSHALL ISLANDS
	MQ		MARTINIQUE
	MR		MAURITANIA
	MU		MAURITIUS
	YT		MAYOTTE
	MX		MEXICO
	FM		MICRONESIA, FEDERATED STATES OF
	MD		MOLDOVA
	MC		MONACO
	MN		MONGOLIA
	ME		MONTENEGRO
	MS		MONTSERRAT
	MA		MOROCCO
	MZ		MOZAMBIQUE
	MM		MYANMAR
	NA		NAMIBIA
	NR		NAURU
	NP		NEPAL
	NL		NETHERLANDS
	NC		NEW CALEDONIA
	NZ		NEW ZEALAND
	NI		NICARAGUA
	NE		NIGER
	NG		NIGERIA
	NU		NIUE
	NF		NORFOLK ISLAND
	MP		NORTHERN MARIANA ISLANDS
	NO		NORWAY
	OM		OMAN
	PK		PAKISTAN
	PW		PALAU
	PS		PALESTINIAN TERRITORY, OCCUPIED
	PA		PANAMA
	PG		PAPUA NEW GUINEA
	PY		PARAGUAY
	PE		PERU
	PH		PHILIPPINES
	PN		PITCAIRN
	PL		POLAND
	PT		PORTUGAL
	PR		PUERTO RICO
	QA		QATA
	RE		R?UNION
	RO		ROMANIA
	RU		RUSSIAN FEDERATION
	RW		RWANDA
	BL		SAINT BARTH?LEMY
	SH		SAINT HELENA
	KN		SAINT KITTS AND NEVIS
	LC		SAINT LUCIA
	MF		SAINT MARTIN
	PM		SAINT PIERRE AND MIQUELON
	VC		SAINT VINCENT AND THE GRENADINES
	WS		SAMOA
	SM		SAN MARINO
	ST		SAO TOME AND PRINCIPE
	SA		SAUDI ARABIA
	SN		SENEGAL
	RS		SERBIA
	SC		SEYCHELLES
	SL		SIERRA LEONE
	SX		SINT MAARTEN
	SG		SINGAPORE
	SK		SLOVAKIA
	SI		SLOVENIA
	SB		SOLOMON ISLANDS
	SO		SOMALIA
	ZA		SOUTH AFRICA
	GS		SOUTH GEORGIA AND THE SOUTH SANDWICH ISLANDS
	ES		SPAIN
	LK		SRI LANKA
	SD		SUDAN
	SR		SURINAME
	SJ		SVALBARD AND JAN MAYEN
	SZ		SWAZILAND
	SE		SWEDEN
	CH		SWITZERLAND
	SY		SYRIAN ARAB REPUBLIC
	TW		TAIWAN
	TJ		TAJIKISTAN
	TZ		TANZANIA, UNITED REPUBLIC OF
	TH		THAILAND
	TL		TIMOR-LESTE
	TG		TOGO
	TK		TOKELAU
	TO		TONGA
	TT		TRINIDAD AND TOBAGO
	TN		TUNISIA
	TR		TURKEY
	TM		TURKMENISTAN
	TC		TURKS AND CAICOS ISLANDS
	TV		TUVALU
	UG		UGANDA
	UA		UKRAINE
	AE		UNITED ARAB EMIRATES
	GB		UNITED KINGDOM
	US		UNITED STATES
	UM		UNITED STATES MINOR OUTLYING ISLANDS
	UY		URUGUAY
	UZ		UZBEKISTAN
	VU		VANUATU
	VE		VENEZUELA
	VN		VIET NAM
	VG		VIRGIN ISLANDS, BRITISH
	VI		VIRGIN ISLANDS, U.S.
	WF		WALLIS AND FUTUNA
	EH		WESTERN SAHARA
	YE		YEMEN
	ZM		ZAMBIA
	ZW		ZIMBABWE

If you want a full list of flags and their parameters use the "-H" flag instead of "-h".

When you are ready to write the output to a file you can use the shells inbuilt I/O redirection or tee with w_scan's output switches:
---output switches---
       -G, --output-dvbsrc
               generate channels.conf for dvbsrc plugin
       -L, --output-VLC
               generate VLC xspf playlist (experimental)
       -M, --output-mplayer
               mplayer output instead of vdr channels.conf
       -X, --output-xine
               tzap/czap/xine output instead of vdr channels.conf
       -x, --output-initial
               generate initial tuning data for (dvb-)scan
       -Z, --output-xml
               generate w_scan XML tuning data
       -o2
               2 = vdr-2.x
       -o21
               21 = vdr-2.1 (dev) 
Examples:
w_scan -f c -c DE > channels.conf

w_scan -f t -c DE | tee -a channels.conf

Move it latter to:
/storage/.kodi/userdata/addon_data/service.multimedia.vdr-addon/config/
or overwrite:
/storage/.kodi/userdata/addon_data/service.multimedia.vdr-addon/config/channel.conf
and reboot to get VDR to recognize the channel list.

If you are asked to create a log use:
w_scan -v -v 2>&1 | tee w_scan.log
The "-v"s regulate output verbosity while "2>&1" sends information from stderr to stdout and combines it with the already existing stream in stdout, so it doesn't just end up on the terminal and not in the log file. Later, "more", "less" or "cat" can be used to view the contents of the files that have been created. Manual editing can be accomplished with "vi". Then you can see just how much of w_scan's output goes to stderr.

I hope you find this tutorial useful.

Useful links and sources:
http://edafe.org/w_scan/
http://linuxtv.org/wiki/index.php/W_scan

Comments

  • sniffersniffer Posts: 228WeTek Community Member
    Re: [TUTORIAL] Using w_scan on DVB-T/T2/C

    greate tutorial

    w_scan you can use for dvb-s too
  • ad015ad015 Posts: 16WeTek Community Member
    Thanks for this gr8 tutorial

    can you please explain how can i search for one specific frequency for dvbs-dvbs2.

    Thanks
  • zbigzbig20zbigzbig20 Posts: 942WeTek Community Member
    Hi. Look there for some infos : http://linuxtv.org/wiki/index.php/W_scan
  • mauromauro Posts: 29WeTek Community Member
    HI there,

    good afternoon everybody.

    I'm new with OpenElec literally got it 2 days ago mainly due to the possibility to stream terrestrial channels with tvheadend and I'm already stacked with the configuration.

    First of all the actual web interface is slightly different from the one published here: http://wiki.openelec.tv/index.php/Configuring_Tvheadend.

    from the web interface, configuration tab > DVB inputs > tv adapters I can see the DVB-T adaper and enable.
    configuration> DVB inputs> Networks, I create a "dvbt" network with default settings
    configuration > DVB Inputs> Muxes enable only changing DVB-T settings

    After that when I saw that no service were found I used w_scan -ft -c IT and this is the output:
    w_scan -ft -c IT
    w_scan version 20141122 (compiled for DVB API 5.10)
    using settings for ITALY
    DVB aerial
    DVB-T Europe
    scan type TERRESTRIAL, channellist 4
    output format vdr-2.0
    WARNING: could not guess your codepage. Falling back to 'UTF-8'
    output charset 'UTF-8', use -C <charset> to override
    Info: using DVB adapter auto detection.
    main:3904: FATAL: ***** NO USEABLE TERRESTRIAL CARD FOUND. *****
    Please check wether dvb driver is loaded and
    verify that no dvb application (i.e. vdr) is running.

    What can I do next?
    How can I verify that by chance I've dvb application running?
    How I can verify the dvb drivers are loaded?

    I'd like to pass a config file or specific part of it if required, just let me know where it is saved

    Thanks everybody

    ciao

    m


  • mauromauro Posts: 29WeTek Community Member
    Problem solved.

    Using the new release of tvheadend, on the network tab when creating a network it is necessary to select the approprate "Pre-defined Muxes:". Once I did this immediately the system works

    Enjoy
  • pfjpfj Posts: 11WeTek Community Member
    Hi all - for some reason w_scan is not detecting my cable tuner (no useable cable card found) - it's available in tvheadend but not using this program? There are no "pre-defined muxes" for me to use but have added manually.

    [IMG]http://wetekforums.com/vb5/core/image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAhoAAADxCAIAAAACx4kZAAAgAElEQVR4nO2dW5MkR3XH6wtwsQdkbAchaRSsRK MhouR2BiDcNhBDAVyBEHbYGCRAK9cwIMfbL8YY uhnnCgMRBcFA5rS1pZrCQTZpGGkBpZ60C74sFcpAWEGHbBCDlAMoJvsH6o2zmZ52RlVmdNd3X/f9ERu11TnXXyUvmvzKw8J3niR2fKz3O/eubmj96ULJQ0nzXk6WJtWVmyoi7iIvM5viZkRZFNFm1ELCZZsZaVaLPmrfqgWSo5AQAAMFYaOXn2ecgJAACAvpw7fxajEwAAAPPyxHlMdgEAAJibJ86fKQcokBMAAAD9eeL8mXKAAjmRmWRFniZpvkLv/QAAwABocrK5N51enE4vTqf7W3GvuLG7U6V8kV/i2DY5uL3Zeb5l58buzvaxuMZWclJqypqw5K9rp/lsNoO4A7B8VHJynsnJ5t50ulf15xu7O0Moys7uRvXlyNYOk4edrSO 55t2XpzGl5M0n62VnIxhy8JK7REBYGU4d HsuQtnmZzw/j1Jks296faxZGt/Or24s7XbjCFIv39ka8caOlT9 962OODY2d1Iks1tS6iccsLPP7K1s7dpnkpS2uYX7QF9Tu/cCVVtmKplp/ptV9dMtlkVtB9vL11kbe9JDGo61ElWzGazPG/ 1F/4HPmV7ZnnEl7pNKcXWdaOSrKiyNKm5CAtACwHtpywoUDJse3yyNY 6aCPbO3U/9/abzWAjmY2dnea82my7fyVt5wI59dWKUhyUk6N7ezWibrkqCLNi2zitXRiDWE6fzUhHWqat913mreiMMmKtsdM0 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    Any ideas? Never mind problem solved, tvheadend was running so disable this.

  • NE0NE0 Posts: 808WeTek Community Member
    [USER="13427"]pfj[/USER]

    Please disable Tvheadend or VDR before using w_scan
  • pfjpfj Posts: 11WeTek Community Member
    NE0 wrote: »
    [USER="13427"]pfj[/USER]

    Please disable Tvheadend or VDR before using w_scan

    Hi Neo - Yes I figured this out thanks. I couldn't get w_scan to scan correct frequencies I required but it worked ok.
  • zoobihoobizoobihoobi Posts: 59WeTek Community Member
    Two quick question.

    Will it be same for DVB S2
    Very basic question, how to execute this commands (By which application, is it through terminal?) I know it looks weird question but I am new to it

    Thanks
  • zoobihoobizoobihoobi Posts: 59WeTek Community Member
    Use Putty for w_scan command.
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