[mythtv-users] IVTV recordings glitch every 302 seconds

Michael T. Dean mtdean at thirdcontact.com
Sat Jul 7 14:09:49 UTC 2007

On 07/07/2007 07:00 AM, Robin Gilks wrote:
>> Yup, you have heard the term "it happens every 5 minutes" and it does -
>> plus a couple of seconds!!
>> I've checked on 2 frontends and with mplayer and its definitely the
>> recording and not the playback. The glitch takes the form of a pause or
>> hesitation at intervals of about 302 seonds from the start of the
>> recording (i.e. its not some other process running every 5 minutes). Each
>> glitch lasts about a second.
>> As far as I can see my DVB sat card does not suffer this and its running
>> about the same bit rate (at least the files are about the same size). No
>> overruns appearing in the logs from the ivtv driver although I've not
>> tried logging the backend yet.
>> I'm running 0.10.3 ivtv on a 2.6.20 kernel on Gentoo stable (I know that
>> the stable branch has only 0.10.1 but I've tried that as well!!). Mythtv
>> is trunk SVN r13823.
>> Any clues or any similarities anyone?
> I have found one clue - I've turned off EIT on the DVB-S card (which I was
> using to get schedule info on the radio channels) and the glitches have
> gone away.
> When my current recordings finish I'll try turning EIT back on but with
> the card allocated all the time instead of on demand.

Could also be DB access when writing EIT...


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