Andy Walls wrote:
> On Sat, 2008-07-12 at 15:45 -0500, Nick Bright wrote:
>
>   
>>>   
>>>       
>> I must confess I only waited a few minutes and assumed it would give 
>> this error for every channel (since the mythtv scanner wasn't showing 
>> anything), but shortly after sending this the 25 minute process of 
>> scanning ended, with this information displayed:
>>
>> dumping lists (26 services)
>> [018a]:483000000:QAM_256:1984:1985:394
>> [00b5]:483000000:QAM_256:0:2049:181
>> [0154]:483000000:QAM_256:0:2113:340
>> [0263]:483000000:QAM_256:0:2177:611
>> [025d]:483000000:QAM_256:0:2241:605
>> [00b9]:483000000:QAM_256:0:2305:185
>> [00be]:483000000:QAM_256:0:2369:190
>> [00bf]:483000000:QAM_256:0:2433:191
>> [0142]:483000000:QAM_256:2497:2496:322
>> [00c0]:483000000:QAM_256:0:2561:192
>> [0260]:483000000:QAM_256:0:2689:608
>> [00cf]:483000000:QAM_256:0:2753:207
>> [012d]:483000000:QAM_256:0:2817:301
>> [0189]:483000000:QAM_256:2880:2881:393
>> [025c]:483000000:QAM_256:0:2625:604
>> [0137]:489000000:QAM_256:0:1985:311
>> [00b7]:489000000:QAM_256:0:2049:183
>> [013a]:489000000:QAM_256:2115:2113:314
>> [00b8]:489000000:QAM_256:0:2177:184
>> [013c]:489000000:QAM_256:2242:2240:316
>> [0259]:489000000:QAM_256:2304:2305:601
>> [00c1]:489000000:QAM_256:0:2369:193
>> [0144]:489000000:QAM_256:2433:2432:324
>> [00c3]:489000000:QAM_256:0:2497:195
>> [00c8]:489000000:QAM_256:0:2561:200
>> [0133]:489000000:QAM_256:2625:2624:307
>> Done.
>>
>> To be honest... I don't know what this means. Apparently it was able to 
>> lock some channels, but what they are, if they are encrypted, I have no 
>> idea. Since MythTV isn't seeing them, I don't know how to tell another 
>> program to tune the card to one of those channels and copy it to a file 
>> so I can try to view the output in something like Mplayer.
>>
>> I'll keep tinkering though....
>>     
>
> You locked on to only 2 RF carriers.  I don't have cable/QAM available
> to me, but the number do look kind of odd.
>
> Here's what I have in my ~/.mplayer/channels.conf for 8-VSB terrestrial
> ATSC in my area:
>
> WFDC DT:479028615:8VSB:49:52:3
> WETA-HD:551028615:8VSB:49:52:1
> WETADT1:551028615:8VSB:65:68:2
> WETADT2:551028615:8VSB:81:84:3
> WETADT3:551028615:8VSB:97:100:4
> MHz1:569028615:8VSB:49:52:1
> MHz2:569028615:8VSB:65:68:2
> MHz3:569028615:8VSB:81:84:3
> MHz4:569028615:8VSB:97:100:4
> MHz5:569028615:8VSB:113:116:5
> WHUT-DT:587028615:8VSB:17:20:1
> WHUT-TV:587028615:8VSB:0:0:65535
> WUSA-HD:593028615:8VSB:49:52:1
> 9-Radar:593028615:8VSB:65:68:2
> WUSA-TV:593028615:8VSB:0:0:65535
> WDCA DT:599028615:8VSB:49:52:3
> WTTG DT:605000000:8VSB:49:52:3
> WJLA-HD:623028615:8VSB:49:52:3
> WJLA-SD:623028615:8VSB:65:68:4
> WJLA-S2:623028615:8VSB:113:116:5
> WRC-1:677028615:8VSB:49:52:3
> WRC-2:677028615:8VSB:65:68:4
> CW50:695028615:8VSB:49:52:3
>
>
> With the above channles.conf, I can watch a station with mplayer using
> something like:
>
> $ mplayer dvb://WJLA-HD
>   
I've gotten a channels.conf that seems to resemble reality, at least 
remotely. But when I tell mplayer to try to play one of the channels 
that has both video and audio PID's it complains:

Playing dvb://[0133]
DVBIN: no such channel "0133"
Failed to open dvb://[0133]
Exiting...

However, I can import the channels.conf to mythtv and it does display 
video on those channels, but only some strange pulsing static on the 
audio. I probably don't have something configured correctly. The MythTV 
channel scanner also only identifies four of the channels as being 
nonencrypted - they happen to be my 'local' stations. However, I do know 
that there are several other clear qam channels available such as 
Universal HD, Nat. Geo HD, Discovery HD, TNTHD, TBSHD, and a couple others.

Also, when I do different types of scans, I'm getting different results. 
Does it matter if I choose . vs _ vs - for channel separators? How 
important is having the correct QAM (256, 128, 64)? All of the options 
I've tried have identified channels, but none show the same number of 
channels (and mostly, different channel numbers). Interestingly none of 
them seem play in Myth. The only thing that has actually displayed video 
is importing channels.conf that was generated by the scan utility.

If this is getting off topic for ivtv-users please let me know and I'll 
take it over to the mythtv mailing lists.

Thanks!

 - Nick

> You might want to try just an antenna directed at the nearest major city
> to see if you can scan for some ATSC terrestrial broadcasts and tune to
> them.
>
> -Andy
>
>
> _______________________________________________
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> http://ivtvdriver.org/mailman/listinfo/ivtv-users
>   


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