LinuxQuestions.org

LinuxQuestions.org (/questions/)
-   Linux - Software (https://www.linuxquestions.org/questions/linux-software-2/)
-   -   w_scan errors, I do not have any dvb app running. How to create a channels.conf when you can't? (https://www.linuxquestions.org/questions/linux-software-2/w_scan-errors-i-do-not-have-any-dvb-app-running-how-to-create-a-channels-conf-when-you-cant-4175589093/)

sdowney717 09-09-2016 09:27 AM
w_scan errors, I do not have any dvb app running. How to create a channels.conf when you can't?
 
AND, my ATSC card plays fine in me-tv and kaffeine.

scott@scott-P5QC:~$ w_scan -fa -A1 -c US
w_scan -fa -A1 -c US
w_scan version 20141122 (compiled for DVB API 5.10)
using settings for UNITED STATES
ATSC
VSB US/CA, DVB-T TW
scan type TERRCABLE_ATSC, channellist 1
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 TERRCABLE_ATSC CARD FOUND. *****
Please check wether dvb driver is loaded and
verify that no dvb application (i.e. vdr) is running.
scott@scott-P5QC:~$

It is rather comical, others also can not make wscan work, even following the programmers directions.
https://answers.launchpad.net/me-tv/+question/171493

I got it to scan.
I rebooted, and also added another ATSC card.
Apparently the card is in use even though it is not in use as soon as you run me-tv or kaffeine, even if you close it it is in use, even though it is not showing up in the 'top' terminal command.


scott@scott-P5QC:~$ w_scan -c US /usr/share/dvb/atsc/us-ATSC-center-frequencies-8VSB -X > ~/channels.conf
w_scan -c US /usr/share/dvb/atsc/us-ATSC-center-frequencies-8VSB -X
w_scan version 20141122 (compiled for DVB API 5.10)
using settings for UNITED STATES
ATSC
VSB US/CA, DVB-T TW
scan type TERRCABLE_ATSC, channellist 1
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 -> TERRCABLE_ATSC "LG Electronics LGDT3303 VSB/QAM Frontend": good :-)
/dev/dvb/adapter1/frontend0 -> TERRCABLE_ATSC "Nextwave NXT200X VSB/QAM frontend": good :-)
Using TERRCABLE_ATSC frontend (adapter /dev/dvb/adapter0/frontend0)
-_-_-_-_ Getting frontend capabilities-_-_-_-_
Using DVB API 5.10
frontend 'LG Electronics LGDT3303 VSB/QAM Frontend' supports
INVERSION_AUTO
8VSB
QAM_64
QAM_256
FREQ (54.00MHz ... 858.00MHz)

keefaz 09-11-2016 10:28 AM
Quote:
Originally Posted by sdowney717
I got it to scan.
I rebooted, and also added another ATSC card.
Apparently the card is in use even though it is not in use as soon as you run me-tv or kaffeine, even if you close it it is in use, even though it is not showing up in the 'top' terminal command.
Top program only shows various running tasks, not opened devices
I would try: lsof | grep dvb

teckk 09-14-2016 02:59 PM
I don't see where this was solved. For anyone else, here is a list of ATSC center frequencies for the US.

US ATSC center frequencies

Code:
A  57028615 8VSB
A  63028615 8VSB
A  69028615 8VSB
A  79028615 8VSB
A  85028615 8VSB
A 177028615 8VSB
A 183028615 8VSB
A 189028615 8VSB
A 195028615 8VSB
A 201028615 8VSB
A 207028615 8VSB
A 213028615 8VSB
A 473028615 8VSB
A 479028615 8VSB
A 485028615 8VSB
A 491028615 8VSB
A 497028615 8VSB
A 503028615 8VSB
A 509028615 8VSB
A 515028615 8VSB
A 521028615 8VSB
A 527028615 8VSB
A 533028615 8VSB
A 539028615 8VSB
A 545028615 8VSB
A 551028615 8VSB
A 557028615 8VSB
A 563028615 8VSB
A 569028615 8VSB
A 575028615 8VSB
A 581028615 8VSB
A 587028615 8VSB
A 593028615 8VSB
A 599028615 8VSB
A 605028615 8VSB
A 611028615 8VSB
A 617028615 8VSB
A 623028615 8VSB
A 629028615 8VSB
A 635028615 8VSB
A 641028615 8VSB
A 647028615 8VSB
A 653028615 8VSB
A 659028615 8VSB
A 665028615 8VSB
A 671028615 8VSB
A 677028615 8VSB
A 683028615 8VSB
A 689028615 8VSB
A 695028615 8VSB
A 701028615 8VSB
A 707028615 8VSB
A 713028615 8VSB
A 719028615 8VSB
A 725028615 8VSB
A 731028615 8VSB
A 737028615 8VSB
A 743028615 8VSB
A 749028615 8VSB
A 755028615 8VSB
A 761028615 8VSB
A 767028615 8VSB
A 773028615 8VSB
A 779028615 8VSB
A 785028615 8VSB
A 791028615 8VSB
A 797028615 8VSB
A 803028615 8VSB
You don't have to scan to make a channels.conf if you don't want to. The channels.conf file follows the same format for all channels, only the center frequency need to be changed for the frequency you desire.

Find what FCC frequencies that your channels are broadcast on in your area,
https://en.wikipedia.org/wiki/Televi...el_frequencies
Then your channels.conf should look like the below example. This example is for a center frequency of 581028615 MHz, which is FCC designated UHF channel 32, in my area that's virtual channel 16. There are 5 virtual channel streams in this example. Most ATSC channels have only 3 or maybe 4 streams, some only 2.
Code:
16.1:581028615:8VSB:49:52:3
16.2:581028615:8VSB:65:68:4
16.3:581028615:8VSB:81:84:5
16.4:581028615:8VSB:97:100:6
16.5:581028615 8VSB:113:116:7
The first stream for that channel is 581028615:8VSB:49:52:3
The Identifier 16.1 can be changed to NBC1, MeTV, PBS1, 16_1, whatever you want.

For FCC UHF channel 15, (Virtual channel 14 in my area) that would be
Code:
14.1:479028615:8VSB:49:52:1
14.2:479028615:8VSB:65:68:2
14.3:479028615:8VSB:81:84:3
Get it? Good.


All times are GMT -5. The time now is 03:05 PM.