2009/11/24 Adam Charrett <a...@dvbstreamer.org>
> 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
>
Thanks Adam.
I have a Western Digital 320G SATA HDD. dmesg reports the SATA link is up
at 3Gbps. I am using the EXT4 file system.
The full HDD description is:
WD3200AAKS-75VYA0 Western Digital Caviar Blue 320GB 7200RPM SATA-300 16MB
Cache 3.5-Inch Internal Hard Drive
*
Here is the hdparm output from the read test (not sure how to do a write
test):
[r...@saturn-tv trevor]# hdparm -tT /dev/sda3
/dev/sda3:
Timing cached reads: 1946 MB in 2.00 seconds = 973.06 MB/sec
Timing buffered disk reads: 236 MB in 3.02 seconds = 78.19 MB/sec
The HDD appears to be fast enough to handle two SD video channel write
streams and one read stream, but I may be wrong.
Is there a way to disable livepause and stream live TV direct to mplayer?
In my local_conf.py file, I tried removing the
activate.plugin('tv.livepause') and leave the tv.mplayer plugin active. In
this case I could still pause live TV so I guess livepause is imbedded
somehow.
If I could do this, I could either elliminate or confirm that livepause is
or is not the problem.
Thanks, Trevor.
*
*
*
------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Freevo-users mailing list
Freevo-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/freevo-users
