On Tue, Nov 24, 2009 at 12:23 AM, Adam Charrett <a...@dvbstreamer.org>wrote:
> On Sun, November 22, 2009 10:44 pm, Bernard Mentink wrote:
> > 2009/11/23 Trevor Michel-Smith <trevor.michelsm...@gmail.com>
> >
> >> Hi,
> >>
> >> I have been experiencing severe macro blocking and audio pops and
> >> squeaks
> >> when watching TV and recording at the same time. Recordings always
> >> turns
> >> out prefect but live TV (via livepause) is afflicted with these errors.
> >> The
> >> problem can be fix, for a while, by exiting back to the TV guide and
> >> then
> >> back to the TV channel being watched.
> >>
> >> I have an Asus M2A-VM motherboard with dual core Athlon 64 X2 4600+
> >> processor, two DVB-S receivers (one PCI and one PCIE-1), 2G RAM and
> >> Freevo
> >> 1.9 (on Arch Linux).
> >>
> >> Has anyone else experienced these problems and possibly corrected them?
> >>
> >> Thank you. Regards, Trevor.
> >>
> >>
> > Just for record, I have had "not quite so severe" macro blocking under
> the
> > same conditions, i.e using livepause/dvbstreamer/mplayer while recording
> > ..
> >
> > Hope someone can help out ..
> >
> > Cheers,
> > Bernie
>
> At a guess, your HDDs don't have enough bandwidth to record 2 streams to
> disk and playback 1 all at the same time. The reason for the macro blocks
> and audio pops is the data isn't being fed fast enough to the decoders
> (xine/mplayer).
>
> I see you've mention your CPU, RAM, motherboad and cards, but you've
> forgotten the major limiting factor your HDD!
>
> I solution, if you have 2 HDDs, is to record onto 1 and livepause onto the
> other and see if that makes a difference.
>
> The more expensive option is to buy a consumer grade HDD (Seagate DB35
> type) which have better streaming performance and larger temperature
> ranges.
>
> Which reminds me have you checked the temperature of your HDD? When I've
> experienced problems like this in the past it has been because the HDD was
> v hot (and gotten some bad sectors as a result).
>
> Hope this helps.
>
> Adam
>
>
>
>
Hi Adam,
I am having the same issues as Trevor, yet my HDD performance is fine.
Hdparm reports 75Mbytes/sec un-cached performance. Also, when I used to have
Mythtv
running on the same hardware, having multiple streams worked fine ...
temperature of the drive is also fine.
Their seems to be some problem with livepause sharing access to the HDD with
the record server ..
Cheers,
Bernie
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