[mythtv-users] 2nd attempt, recorded files are empty

[Alan Marchiori]

On Wed, Jul 1, 2009 at 7:10 AM, Michael T. Dean<mtdean at thirdcontact.com> wrote:
> On 07/01/2009 04:28 AM, Peter Hocking wrote:
>> Recorded 2 shows, both ended around 5.30 this afternoon, MASH started
>> at 5.00, the other at 5.03. Both recordings were empty files
>>
>> 2009-07-01 16:58:29.115 Started recording: M*A*S*H "Hawk's Nightmare":
>> channel 1006 on cardid 1, sourceid 1
>>
> ...
>> 2009-07-01 17:31:31.667 Finished recording M*A*S*H "Hawk's Nightmare":
>> channel 1006
>
> When the logs show Myth starting the recording on time and finishing the
> recording on time with no recording errors yet the file is not created,
> it means that Myth is getting no data at all from the capture card.
> This is generally due to a problem with the card/drivers/configuration.
>
> Make sure your capture is working outside of Myth, then find out what
> Myth is doing differently.
>

Another possible problem is signal level if you are receiving over the
air.  I use a HDHR with an ATSC source and one channel has low signal
level.  Sometimes recordings are missing just like you say other times
they work fine.  I used the windows HDHR gui app to watch the signal
levels as it is recording.  When the signal level is low the HDHR
doesn't output anything so myth doesn't record anything and you get an
empty file.

it would be nice if myth would detect this and automatically
reschedule the recording...