[mythtv-users] Recording of 0.00 GB in size

Adam Jimerson vendion at gmail.com
Mon Sep 20 03:12:40 UTC 2010


On Sun, Sep 19, 2010 at 11:07 PM, Jerry Rubinow <jerrymr at gmail.com> wrote:

> On Sun, Sep 19, 2010 at 10:53 PM, Adam Jimerson <vendion at gmail.com> wrote:
>
>> On Fri, Sep 17, 2010 at 12:12 AM, Jerry Rubinow <jerrymr at gmail.com>wrote:
>>
>>> On Fri, Sep 17, 2010 at 12:05 AM, Adam Jimerson <vendion at gmail.com>wrote:
>>>
>>>> Ok so I'm resending my last post because the mailing list ate it, saying
>>>> it was to large.  Anyways I checked the mythbackend.log and found it
>>>> littered with entries that looked like the following:
>>>>
>>>> 2010-09-16 08:00:34.157 AudioInALSA(hw:2,0) Error: weird return from
>>>> snd_pcm_readi: Input/output error
>>>> 2010-09-16 08:00:34.157 NVR(/dev/video0) Error: Short read, 40 of 3072
>>>> bytes from ALSA:hw:2,0
>>>> strange error flushing buffer ...
>>>> select timeout
>>>>
>>>> I can only find them while the system has failed to correctly record a
>>>> show so I'm sure this has something to do with it but don't know what to
>>>> make of it or how to fix it.  I had tried to post more of the log during the
>>>> recording of one of the shows in case I over looked something, but that is
>>>> what set me over the mailing list limit, if anyone wants to look through it
>>>> let me know and I'll find some kind of file host/server to upload it to (to
>>>> large for pastebin every try fails and causes the browser to lock up).
>>>>
>>>
>>> The interesting part should be when the backend first wakes up to tune
>>> the station and begin the record, up through the first of the messages like
>>> the excerpt you posted.  All I can tell from the above is that it looks like
>>> it is having problems getting data from your tuner (/dev/video0).  Can you
>>> post that section of the log file?  It doesn't have to be large.  Also, what
>>> type of tuner card do you have?
>>>
>>> -Jerry
>>>
>>
>> Sorry for the long delay, work has been keeping me from messing with
>> Myth.  As for the request from the log here is from where, as far as I can
>> tell, the backend wakes up for the recording all the way to where it starts
>> spitting out the "select timeout"s
>>
>> 2010-09-16 07:59:00.594 scheduler: Scheduled items: Scheduled 214 items in
>> 0.1 = 0.00 match + 0.13 place
>> 2010-09-16 07:59:29.898 TVRec(1): ASK_RECORDING 1 29 0 0
>> 2010-09-16 08:00:02.660 TVRec(1): Changing from None to RecordingOnly
>> 2010-09-16 08:00:02.661 TVRec(1): HW Tuner: 1->1
>> 2010-09-16 08:00:02.711 ProgramInfo(): Updated pathname '':'' ->
>> '1063_20100916080000.nuv'
>> 2010-09-16 08:00:04.021 SampleRate: Attempted to add a rate 32000 Hz,
>> which is not in the list of allowed rates.
>> 2010-09-16 08:00:04.024 TVRec(1): rec->GetFileName():
>> '/mnt/storage/MythTv/Default/1063_20100916080000.nuv'
>> 2010-09-16 08:00:04.136 NVR(/dev/video0) Error: Can't open vbi device: ''
>> 2010-09-16 08:00:04.208 AutoExpire: CalcParams(): Max required Free Space:
>> 2.0 GB w/freq: 15 min
>> 2010-09-16 08:00:04.218 Started recording: V: channel 1063 on cardid 1,
>> sourceid 1
>> 2010-09-16 08:00:04.226 scheduler: Started recording: V: channel 1063 on
>> cardid 1, sourceid 1
>> select timeout
>> 2010-09-16 08:00:14.157 AudioInALSA(hw:2,0) Error: weird return from
>> snd_pcm_readi: Input/output error
>> select timeout
>> select timeout
>>
>>
>> As for my TV Tuner it is a Hauppauge WinTV HVR-950Q USB device.
>>
>
> For the recording on the same channel that works, does the log look any
> different (besides the ALSA errors)?  Not sure if the SampleRate message is
> significant, or the vbi error, but I'd try looking in the archive for other
> people reporting those errors, if they are absent on the recording which is
> successful.  That's about the limit of what I can think of to try.
>
> -Jerry
>
>
The vbi errors should still be in the recordings that work correctly, I
don't have anything set for the vbi option because I thought that it was for
closed captions.  I'll check into the logs to compare the  good and bad
recordings to see what is different.
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