W scan: Difference between revisions
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{{lowercase|w_scan}} |
{{lowercase|w_scan}} |
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''w_scan'' is a small command line utility used to perform [[Frequency scan|frequency scan]]s for [[DVB]] and [[ATSC]] transmissions. It is not included in [[LinuxTV dvb-apps]], but complements the two [[Frequency scan|frequency scanning]] utilities available through [[LinuxTV dvb-apps]], [[Dvbscan|dvbscan]] and [[Scan|scan]]. |
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''w_scan'' is capable of directly creating channels.conf files as well as initial tuning data for [[Scan|scan]]. |
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==Obtaining w_scan== |
==Obtaining w_scan== |
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''w_scan'' can be obtained [http://wirbel.htpc-forum.de/w_scan/index2.html here]. |
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==Documentation== |
==Documentation== |
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''w_scan'' |
Detailed information can be found in the ''w_scan'' man page (i.e. from a console, run <code>man w_scan</code>). Additionally, running ''w_scan'' with the -h parameter will produce an output that provides a summary of it's main command line options. |
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<pre>w_scan [options...] >> channels.conf</pre> |
<pre>w_scan [options...] >> channels.conf</pre> |
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{| border=1 cellpadding=1 cellspacing=0 |
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{| class="wikitable" |
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!Parameter |
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|+'''Basic w_scan commandline parameters and their respective options''' |
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!Description |
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! Parameter !! Argument !! Description & Options |
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'''Frontend Type'''<br> |
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a = ATSC (North America, cable and terrestrial)<br> |
a = ATSC (North America, cable and terrestrial)<br> |
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c = DVB-C (Europe, cable)<br> |
c = DVB-C (Europe, cable)<br> |
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s = DVB-S/S2 (Satellite)<br> |
s = DVB-S/S2 (Satellite)<br> |
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t = DVB-T (Europe, terrestrial = default)<br> |
t = DVB-T/T2 (Europe, terrestrial = default)<br> |
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NOTE: |
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| '''ATSC Type''' |
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1 = VSB ("Over-the-Air)"<br> |
1 = VSB ("Over-the-Air)"<br> |
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2 = QAM annex B ("cable TV")<br> |
2 = QAM annex B ("cable TV")<br> |
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3 = both of them |
3 = both of them |
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|'''Country ID''' |
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| -c''ID'' |
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uppercase two character identifier as defined in ISO 3166-1,<br> |
uppercase two character identifier as defined in ISO 3166-1,<br> |
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(DE,FR,GB,US,FI,...)<br> |
(DE,FR,GB,US,FI,...)<br> |
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see -c? for list of |
see -c? for list of countries. |
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| ''' |
| '''Satellite ID''' |
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| -s''ID'' |
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(S19E2,S13E0,S0W8,...)<br> |
(S19E2,S13E0,S0W8,...)<br> |
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see -s? for list of satellites. |
see -s? for list of satellites. |
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| ''' |
| '''Output Format''' |
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| -''Format'' |
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G = Gstreamer dvbsrc Plugin<br> |
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L = VLC xspf playlist (experimental)<br> |
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M = mplayer format, similar to X<br> |
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| ''' |
| '''VDR version''' |
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| -o''N'' |
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6 = vdr-1.6.x<br> |
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7 = vdr-1.7.3 or higher |
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| ''' |
| '''Help Level''' |
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| -''Level'' |
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''Experts'' or ''experienced users'' may use some of the other options, but this is not recommended. |
Some working examples, cobbled together from the basics given in the above table, are provided below. Note: ''Experts'' or ''experienced users'' may use some of the other ''w_scan'' options available, but this is not recommended. (For example, w_scan searches ''/dev/dvb/adapterX/frontendY'' for DVB/ATSC cards matching to option "-f", therefore specifying the adapter "-a XX" is not recommended.) |
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{{Note|w_scan searches ''/dev/dvb/adapterX/frontendY'' for DVB/ATSC cards matching to option "-f", therefore specifying the adapter "-a XX" is not recommended.}} |
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==Examples== |
==Examples== |
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{{Note|As mentioned in the above table: |
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:NOTE: ATSC support needs w_scan >= 20080815 |
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* ATSC support requires a w_scan version <nowiki> >= </nowiki> 20080815 |
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* ATSC support was integrated in vdr-1.7.14, VDR output needs '-o 7' |
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* DVB-S/S2 support requires a w_scan version <nowiki> >= </nowiki> 20090504 |
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* DVB-T2 support requires a w_scan version <nowiki> >= </nowiki> 20120111 }} |
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===Scanning ATSC VSB (United States, Over-the-Air)=== |
===Scanning ATSC VSB (United States, Over-the-Air)=== |
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===Scanning ATSC QAM annex B (United States, digital cable TV)=== |
===Scanning ATSC QAM annex B (United States, digital cable TV)=== |
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$ w_scan -fa -A2 -c US -X |
$ w_scan -fa -A2 -c US -X |
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===Scanning DVB-T (Germany, Over-the-Air, VDR output)=== |
===Scanning DVB-T/T2 (Germany, Over-the-Air, VDR output)=== |
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$ w_scan -ft -c DE |
$ w_scan -ft -c DE |
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===Scanning DVB-C (Germany, digital cable TV, |
===Scanning DVB-C (Germany, digital cable TV, Kaffeine channels.dvb)=== |
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$ w_scan -fc -c DE -k |
$ w_scan -fc -c DE -k |
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===Scanning DVB-S/S2 (Astra 19.2east, vdr-1.7.x)=== |
===Scanning DVB-S/S2 (Astra 19.2east, vdr-1.7.x)=== |
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===Scanning DVB-S (Thor 0.8west, vdr-1.3.x .. vdr-1.6.x)=== |
===Scanning DVB-S (Thor 0.8west, vdr-1.3.x .. vdr-1.6.x)=== |
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$ w_scan -fs -s S0W8 |
$ w_scan -fs -s S0W8 |
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===Scanning DVB-S (Hotbird, vdr-1.7, 4-port DiSeqC switch, hotbird at port 3)=== |
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$ w_scan -o 7 -fs -s S13E0 -D2c |
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Note: ports are counting from '0'. |
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===Generating dvbscan tuning data=== |
===Generating dvbscan tuning data=== |
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Exactly as above, just specify output format dvbscan with "-x": |
Exactly as above, just specify output format dvbscan with "-x": |
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If you choose to create an initial scan file (and you know the name of your local transmitter or cable provider), you can send the resulting file to the [http://linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb dvb mailing list] after checking that it hasn't already been posted or added to the [http://linuxtv.org/hg/dvb-apps/file/tip/util/scan/ scan directory in the dvb-apps repository]. |
If you choose to create an initial scan file (and you know the name of your local transmitter or cable provider), you can send the resulting file to the [http://linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb dvb mailing list] after checking that it hasn't already been posted or added to the [http://linuxtv.org/hg/dvb-apps/file/tip/util/scan/ scan directory in the dvb-apps repository]. |
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===Generating c/s/tzap tuning data=== |
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Exactly as above, just specify output format zap/czap/xine with "-X" (uppercase X): |
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$ w_scan -f <FRONTEND_TYPE> {-c <COUNTRY>,-s <SATELLITE>} -X >''cc-Ttttt'' |
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===Defining output charset=== |
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$ w_scan -f <FRONTEND_TYPE> -C <CHARSET> ... |
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Use 'iconv --list' for a list of possible output charsets, usually something like 'utf-8', 'iso8859-15'. |
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Needs 20110410 or higher. |
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==Also See== |
==Also See== |
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* [[Frequency_scan#Comparison_of_DVB_frequency_scanning_commandline_utilities|Comparison of the scanning utilities]]. |
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* man w_scan |
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* [[scan]] |
* [[scan]] |
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* [[dvbscan]] |
* [[dvbscan]] |
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==External Links== |
==External Links== |
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* [http://wirbel.htpc-forum.de/w_scan/index2.html Homepage] |
* [http://wirbel.htpc-forum.de/w_scan/index2.html Homepage (de)] |
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* [ |
* [http://wirbel.htpc-forum.de/w_scan/index_en.html Homepage (en)] |
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* [http://edafe.org/vdr/w_scan/ English howto by edafe] |
* [http://edafe.org/vdr/w_scan/ English howto by edafe] |
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Revision as of 18:09, 11 January 2012
w_scan is a small command line utility used to perform frequency scans for DVB and ATSC transmissions. It is not included in LinuxTV dvb-apps, but complements the two frequency scanning utilities available through LinuxTV dvb-apps, dvbscan and scan.
w_scan is capable of directly creating channels.conf files as well as initial tuning data for scan.
Obtaining w_scan
w_scan can be obtained here.
Documentation
Detailed information can be found in the w_scan man page (i.e. from a console, run man w_scan
). Additionally, running w_scan with the -h parameter will produce an output that provides a summary of it's main command line options.
w_scan [options...] >> channels.conf
In general, when using w_scan you should at least specify three parameters: frontend type, country/satellite and output format. The following table summarizes the basic command line essentials for using w_scan.
Parameter | Argument | Description & Options |
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Frontend Type | -fType |
a = ATSC (North America, cable and terrestrial) NOTE:
|
ATSC Type | -AType |
(ignored for DVB-C and DVB-T) |
Country ID | -cID |
(mandatory for ATSC, DVB-C, DVB-T/T2) |
Satellite ID | -sID |
(mandatory for DVB-S/S2) |
Output Format | -Format |
X = czap/tzap/xine channels.conf |
VDR version | -oN |
6 = vdr-1.6.x |
Help Level | -Level |
h = basic help |
Some working examples, cobbled together from the basics given in the above table, are provided below. Note: Experts or experienced users may use some of the other w_scan options available, but this is not recommended. (For example, w_scan searches /dev/dvb/adapterX/frontendY for DVB/ATSC cards matching to option "-f", therefore specifying the adapter "-a XX" is not recommended.)
Examples
- ATSC support requires a w_scan version >= 20080815
- ATSC support was integrated in vdr-1.7.14, VDR output needs '-o 7'
- DVB-S/S2 support requires a w_scan version >= 20090504
- DVB-T2 support requires a w_scan version >= 20120111
Scanning ATSC VSB (United States, Over-the-Air)
$ w_scan -fa -A1 -c US -X
Scanning ATSC QAM annex B (United States, digital cable TV)
$ w_scan -fa -A2 -c US -X
Scanning DVB-T/T2 (Germany, Over-the-Air, VDR output)
$ w_scan -ft -c DE
Scanning DVB-C (Germany, digital cable TV, Kaffeine channels.dvb)
$ w_scan -fc -c DE -k
Scanning DVB-S/S2 (Astra 19.2east, vdr-1.7.x)
$ w_scan -fs -s S19E2 -o 7
Scanning DVB-S (Thor 0.8west, vdr-1.3.x .. vdr-1.6.x)
$ w_scan -fs -s S0W8
Scanning DVB-S (Hotbird, vdr-1.7, 4-port DiSeqC switch, hotbird at port 3)
$ w_scan -o 7 -fs -s S13E0 -D2c
Note: ports are counting from '0'.
Generating dvbscan tuning data
Exactly as above, just specify output format dvbscan with "-x":
$ w_scan -f <FRONTEND_TYPE> {-c <COUNTRY>,-s <SATELLITE>} -x >cc-Ttttt
If you choose to create an initial scan file (and you know the name of your local transmitter or cable provider), you can send the resulting file to the dvb mailing list after checking that it hasn't already been posted or added to the scan directory in the dvb-apps repository.
Generating c/s/tzap tuning data
Exactly as above, just specify output format zap/czap/xine with "-X" (uppercase X):
$ w_scan -f <FRONTEND_TYPE> {-c <COUNTRY>,-s <SATELLITE>} -X >cc-Ttttt
Defining output charset
$ w_scan -f <FRONTEND_TYPE> -C <CHARSET> ...
Use 'iconv --list' for a list of possible output charsets, usually something like 'utf-8', 'iso8859-15'. Needs 20110410 or higher.
Also See
- Comparison of the scanning utilities.
- man w_scan
- scan
- dvbscan