[mythtv-users] Occasional zero length file from a scheduled recording?

[backuppc at sundquist.imapmail.org]

On Thu, Jan 10, 2008 at 7:37 PM, Tom Dexter
<digitalaudiorock[at]gmail.com> wrote: 
> Today I had something occur that's only happened one other time since 
> I built my mythtv system: 
> 
> A scheduled recording for some reason created a zero length recording, 
> and everything in the backend log looks fine: 
> 
> 2008-01-10 16:00:02.922 TVRec(1): Changing from None to RecordingOnly 
> 2008-01-10 16:00:02.931 TVRec(1): HW Tuner: 1->1 
> 2008-01-10 16:00:02.935 DVBChan(0) Warning: Symbol Rate setting (0) is 
> out of range (min/max:5056941/10762000) 
> 2008-01-10 16:00:02.975 Started recording: Oprah Winfrey: channel 1071 
> on cardid 1, sourceid 1 
> 2008-01-10 17:00:00.377 TVRec(1): Changing from RecordingOnly to None 
> 2008-01-10 17:00:00.812 Finished recording Oprah Winfrey: channel 1071 
> 2008-01-10 17:00:00.825 Reschedule requested for id 0. 
> 2008-01-10 17:00:00.921 Scheduled 23 items in 0.1 = 0.01 match + 0.09 place 
> 
> ...It appears to have recorded one hour like it should have, but the 
> file was zero bytes. I just deleted it via mythweb. 

Happened to me yesterday, too (0.20.2 stock version with mythbuntu 7.10)

I chalked it up to poor reception.  In the evening, I checked via live
TV and was getting poor reception on that particular tuner.  Earlier in
the week I was able to record from all three tuners simultaneaously just
fine.

I am still at a loss as to why OTA tuner performance goes up and down so
much, as it doesn't seem to be correlated with weather like I had
previously thought (earlier thread:
http://www.gossamer-threads.com/lists/mythtv/users/318012#318012)

Update from that previous thread:  I have just one antenna now, working
as good as when I had two directionals, and found a 3-way splitter going
to a pcHDTV 5500 and an HDHR.  I got the HDHR since I thought the pcHDTV
was supposed to get poor reception according to the wiki (well, it's
just a wiki, I suppose), but last night, the pcHDTV was only tuner
reliably pulling in good signals.

I'll be moving the antenna to the roof after the weather starts to warm
up again.

Jon S.

P.S. I had just changed my backend to put the HDHR tuner priorities to
"1" so that the system would preferentially record from them, just to
see if I got overall better reception with the HDHR (question was
answered, but in opposite way from what I expected).  I don't think that
configuration change in and of itself should have caused the lack of
recording.  Please correct me if I am wrong.