Mailing List Archive: MythTV: Users

One channel produces "killer" shows

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ke-myth at retriever

Nov 19, 2009, 9:39 PM

Post #1 of 12 (1084 views)
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One channel produces "killer" shows

I have a weird problem that I haven't seen any mention of.
I can play shows from all channels except for one - CBS.
I thought I just had one bad recording but I've learned
that all recordings of all shows on the channel are "bad".

It doesn't hurt the frontend, but it makes the backend
incapable of playing any other show until I re-start
mythbackend. The backend doesn't hang; it responds and
records, but just can't play anything.

The backend log doesn't show much of anything when
its trying to play.

I've tried removing a recording rule and re-entering it.
The new shows that it records kill it too.

I assume there's something messed up in my database
but I haven't a clue how to find or fix it.

Anyone ?
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reidjr at btconnect

Nov 20, 2009, 2:31 AM

Post #2 of 12 (1022 views)
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Re: One channel produces "killer" shows [In reply to]

Kevin Bailey wrote:
> I have a weird problem that I haven't seen any mention of.
> I can play shows from all channels except for one - CBS.
> I thought I just had one bad recording but I've learned
> that all recordings of all shows on the channel are "bad".
>
> It doesn't hurt the frontend, but it makes the backend
> incapable of playing any other show until I re-start
> mythbackend. The backend doesn't hang; it responds and
> records, but just can't play anything.
>
> The backend log doesn't show much of anything when
> its trying to play.
>
> I've tried removing a recording rule and re-entering it.
> The new shows that it records kill it too.
>
> I assume there's something messed up in my database
> but I haven't a clue how to find or fix it.
>
> Anyone ?
> _______________________________________________
> mythtv-users mailing list
> mythtv-users [at] mythtv
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
>
I cant help, but I am trying to track down a similar problem. I am
keeping my backend up to date with 0.22-fixes, on a mythbuntu 9.04
install and am seeing pretty constant ( once a day) failures of the
backend. Its not a segfault, and the backend stays up, but it stops
responding to the frontend. Trying to track it down at the moment. I am
suspicious that it is related to recording form one particular DVB-CARD
channel as well, but that might be a coincidence.

John
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george_mythusers at mari1938

Nov 20, 2009, 5:24 AM

Post #3 of 12 (1032 views)
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Re: One channel produces "killer" shows [In reply to]

On 11/19/2009 11:39 PM, Kevin Bailey wrote:
> I have a weird problem that I haven't seen any mention of.
> I can play shows from all channels except for one - CBS.
> I thought I just had one bad recording but I've learned
> that all recordings of all shows on the channel are "bad".
>
A little more background information would be useful:

1. Have you ever been able to successfully record CBS before?
2. Are you getting CBS via cable, satellite, OTA?

If you're getting CBS OTA, it could be that you're not getting a strong
signal from that station.
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wpdster at gmail

Nov 20, 2009, 7:01 AM

Post #4 of 12 (1019 views)
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Re: One channel produces "killer" shows [In reply to]

On Fri, Nov 20, 2009 at 12:39 AM, Kevin Bailey
<ke-myth [at] retriever> wrote:
> I have a weird problem that I haven't seen any mention of.
> I can play shows from all channels except for one - CBS.
> I thought I just had one bad recording but I've learned
> that all recordings of all shows on the channel are "bad".
Are you receiving your shows OTA in the greater Boston area? I was
playing with my television the other day and changed to channel 7-1
(which, I figure has a 1/3 chance of being CBS), and saw a prerecorded
message explaining that channel 7 had changed frequencies and that I
should do a rescan. I did that, found channel 7-1 again, and disabled
the old channel 7-1.

--wpd
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cummings at kjchome

Nov 20, 2009, 7:54 AM

Post #5 of 12 (1020 views)
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Re: One channel produces "killer" shows [In reply to]

On 11/20/2009 10:01 AM, Patrick Doyle wrote:
> On Fri, Nov 20, 2009 at 12:39 AM, Kevin Bailey
> <ke-myth [at] retriever> wrote:
>> I have a weird problem that I haven't seen any mention of.
>> I can play shows from all channels except for one - CBS.
>> I thought I just had one bad recording but I've learned
>> that all recordings of all shows on the channel are "bad".
> Are you receiving your shows OTA in the greater Boston area? I was
> playing with my television the other day and changed to channel 7-1
> (which, I figure has a 1/3 chance of being CBS), and saw a prerecorded
> message explaining that channel 7 had changed frequencies and that I
> should do a rescan. I did that, found channel 7-1 again, and disabled
> the old channel 7-1.

Yes, Channel 7, WHDH, NBC, was having problems with viewer reception in
some areas on the frequency they were using (VHF 7), so they went back
to they frequency they used during the analog/digital simulcast (UHF 42).

> --wpd
> _______________________________________________
> mythtv-users mailing list
> mythtv-users [at] mythtv
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users

--
Kevin J. Cummings
kjchome [at] rcn
cummings [at] kjchome
cummings [at] kjc386
Registered Linux User #1232 (http://counter.li.org)
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wpdster at gmail

Nov 20, 2009, 8:04 AM

Post #6 of 12 (1021 views)
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Re: One channel produces "killer" shows [In reply to]

On Fri, Nov 20, 2009 at 10:54 AM, Kevin J. Cummings
<cummings [at] kjchome> wrote:
> Yes, Channel 7, WHDH, NBC, was having problems with viewer reception in
> some areas on the frequency they were using (VHF 7), so they went back
> to they frequency they used during the analog/digital simulcast (UHF 42).
ok, I'm curious... how do you know that? Do you work in the industry,
or is there some mailing list or web resource dedicated to propagating
such information to the 17 or so folks outside of the industry who
might be interested in such information?

--wpd
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devin.heitmueller at gmail

Nov 20, 2009, 8:05 AM

Post #7 of 12 (1012 views)
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Re: One channel produces "killer" shows [In reply to]

On Fri, Nov 20, 2009 at 10:54 AM, Kevin J. Cummings
<cummings [at] kjchome> wrote:
> On 11/20/2009 10:01 AM, Patrick Doyle wrote:
>> On Fri, Nov 20, 2009 at 12:39 AM, Kevin Bailey
>> <ke-myth [at] retriever> wrote:
>>> I have a weird problem that I haven't seen any mention of.
>>> I can play shows from all channels except for one - CBS.
>>> I thought I just had one bad recording but I've learned
>>> that all recordings of all shows on the channel are "bad".
>> Are you receiving your shows OTA in the greater Boston area? �I was
>> playing with my television the other day and changed to channel 7-1
>> (which, I figure has a 1/3 chance of being CBS), and saw a prerecorded
>> message explaining that channel 7 had changed frequencies and that I
>> should do a rescan. �I did that, found channel 7-1 again, and disabled
>> the old channel 7-1.
>
> Yes, Channel 7, WHDH, NBC, was having problems with viewer reception in
> some areas on the frequency they were using (VHF 7), so they went back
> to they frequency they used during the analog/digital simulcast (UHF 42).

One thing that is noteworthy about CBS-HD is that it has an unusually
high bitrate compared to some of the other OTA HD channels such as NBC
and Fox. I had considerable problems with Kaffeine and that channel,
which seemed to have gotten better in the newest version. Beyond the
bitrate though, I haven't dug into whether there is anything else
unusual about the CBS-HD feed.

Devin

--
Devin J. Heitmueller
http://www.devinheitmueller.com
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devin.heitmueller at gmail

Nov 20, 2009, 8:06 AM

Post #8 of 12 (1025 views)
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Re: One channel produces "killer" shows [In reply to]

On Fri, Nov 20, 2009 at 11:04 AM, Patrick Doyle <wpdster [at] gmail> wrote:
> On Fri, Nov 20, 2009 at 10:54 AM, Kevin J. Cummings
> <cummings [at] kjchome> wrote:
>> Yes, Channel 7, WHDH, NBC, was having problems with viewer reception in
>> some areas on the frequency they were using (VHF 7), so they went back
>> to they frequency they used during the analog/digital simulcast (UHF 42).
> ok, I'm curious... how do you know that? �Do you work in the industry,
> or is there some mailing list or web resource dedicated to propagating
> such information to the 17 or so folks outside of the industry who
> might be interested in such information?

Doug Lung's "RF Report" in TV Technology magazine often contains such
information.

Devin

--
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http://www.devinheitmueller.com
AIM: devinheitmueller
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cummings at kjchome

Nov 20, 2009, 8:10 AM

Post #9 of 12 (1019 views)
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Re: One channel produces "killer" shows [In reply to]

On 11/20/2009 11:04 AM, Patrick Doyle wrote:
> On Fri, Nov 20, 2009 at 10:54 AM, Kevin J. Cummings
> <cummings [at] kjchome> wrote:
>> Yes, Channel 7, WHDH, NBC, was having problems with viewer reception in
>> some areas on the frequency they were using (VHF 7), so they went back
>> to they frequency they used during the analog/digital simulcast (UHF 42).
> ok, I'm curious... how do you know that? Do you work in the industry,
> or is there some mailing list or web resource dedicated to propagating
> such information to the 17 or so folks outside of the industry who
> might be interested in such information?

I happened to be watching Channel 7 news right after the digital
switchover, when they announced that they were having problems with
their signal. At the time, they had switched from channel 42 back to
the old analog frequency of channel 7, as it had been planned for them
to do so. Now, if you look at the frequency they are using, its channel
42. It doesn't take Sherlock Holmes to assume why they are broadcasting
back on channel 42....

> --wpd
> _______________________________________________
> mythtv-users mailing list
> mythtv-users [at] mythtv
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users

--
Kevin J. Cummings
kjchome [at] rcn
cummings [at] kjchome
cummings [at] kjc386
Registered Linux User #1232 (http://counter.li.org)
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george_mythusers at mari1938

Nov 20, 2009, 5:26 PM

Post #10 of 12 (978 views)
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Re: One channel produces "killer" shows [In reply to]

On 11/20/2009 10:04 AM, Patrick Doyle wrote:
> On Fri, Nov 20, 2009 at 10:54 AM, Kevin J. Cummings
> <cummings [at] kjchome> wrote:
>> Yes, Channel 7, WHDH, NBC, was having problems with viewer reception in
>> some areas on the frequency they were using (VHF 7), so they went back
>> to they frequency they used during the analog/digital simulcast (UHF 42).
> ok, I'm curious... how do you know that? Do you work in the industry,
> or is there some mailing list or web resource dedicated to propagating
> such information to the 17 or so folks outside of the industry who
> might be interested in such information?
>

avsforum.com has forums for OTA reception for every TV market in the
nation. Just find the thread for your city/market, and you can tap the
knowledge and wisdom helpful people willing to share their expertise
with you - even if you think there is only 17 of them... :-)

Seriously, if your interested in improving your reception of OTA TV,
it's a great resource - people can tell you what antennas work in your
area and why, what stations are hard to receive and why, etc.
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newbury at mandamus

Nov 20, 2009, 8:07 PM

Post #11 of 12 (970 views)
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Re: One channel produces "killer" shows [In reply to]

Kevin J. Cummings wrote:
> On 11/20/2009 11:04 AM, Patrick Doyle wrote:
>> On Fri, Nov 20, 2009 at 10:54 AM, Kevin J. Cummings
>> <cummings [at] kjchome> wrote:
>>> Yes, Channel 7, WHDH, NBC, was having problems with viewer reception in
>>> some areas on the frequency they were using (VHF 7), so they went back
>>> to they frequency they used during the analog/digital simulcast (UHF 42).
>> ok, I'm curious... how do you know that? Do you work in the industry,
>> or is there some mailing list or web resource dedicated to propagating
>> such information to the 17 or so folks outside of the industry who
>> might be interested in such information?
>
> I happened to be watching Channel 7 news right after the digital
> switchover, when they announced that they were having problems with
> their signal. At the time, they had switched from channel 42 back to
> the old analog frequency of channel 7, as it had been planned for them
> to do so. Now, if you look at the frequency they are using, its channel
> 42. It doesn't take Sherlock Holmes to assume why they are broadcasting
> back on channel 42....
>

There is a *LOT* of information in the on-line searchable database
maintained by the FCC at

http://www.fcc.gov/mb/video/tvq.html

One of the 'hide their light under a bushel' changes made by the coders
at Schedules Direct in the recent past, is that the Limeup 'Report'
button, gives you a listing of your Limeup, including both the
'Advertised' and the Actual Channel numbers. IE: They call themselves
"2-1" but are on '39'. Useful for scanning, or even just trying to
figure out what is where, especially when you have things like "35"
broadcasting on '36'.

Geoff

--
Please let me know if anything I say offends you.
I may wish to offend you again in the future.

Tux says: "Be regular. Eat cron flakes."
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ke-myth at retriever

Nov 22, 2009, 7:02 AM

Post #12 of 12 (904 views)
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Re: One channel produces "killer" shows [In reply to]

On Fri, Nov 20, 2009 at 07:24:57AM -0600, George Mari wrote:
>>
> A little more background information would be useful:
>
> 1. Have you ever been able to successfully record CBS before?

Oh ya, we used to watch Numbers and Big Bang. The trouble
seemed to start around the switch-over, *after* I re-scanned.

> 2. Are you getting CBS via cable, satellite, OTA?

OTA

> If you're getting CBS OTA, it could be that you're not getting a strong
> signal from that station.

The generated files are perfect, AFAIK. I download them
manually to play them, but it would be nice if myth could
play them.

Wasn't there a "clean up the database" script floating around ?
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