[olug] Mythtv

[John Dickson]

I have done some testing as well and the default of 2gig per hour is what I am shooting for. Currently I have 2 PVR-250's and a Pinnacle capture card. The Pinnacle will likely not work as I believe a sound card is needed to capture audio.

A fewe months ago in my testing I ran 2 250's in a K6 box. I had very little headroom for record and the processors inability to replay the mmx broke down any fluent playback. It was impressive with 2 channels at once for such an under powered machine.

The PVR250MCE's, do they offer HW encoded A/V like the straight 250? What's the loss? Diff?

I suspect I will need a 2.4Ghz or greater with 1 gig ram (never too much) 60Gig drive and two nics: 10/100 for control Gigabit for file transfer and backbone.

A/V would be transffered 4x a day and possibly even transcoded on another box. Off the load. Transcoding is so intensive w/respect to the process I need.

That said I think the 250's @ $120 per, a box with needed cooling and watts I would be lookin at <$1500.00. I need pieces that fit well together lacking the bed to test. And I really don't care about the exterior of the box.
Mobo needs 5 pci slots minimum.

John

"Jay Swackhamer" <Jay at RebootTheUser.com> wrote ..
> The PVR250's do HW encoding, If it is a backend-only machine, then you
> could use PVR250MCE's,(I have not yet tested these, but have heard from
> others using these, and I will be testing these sometime soon on the store
> MythTV boxes) which would lower your cost.
> 
> 2gig/hour is at the default settings, you could also set it up to
> transcode after recording to cut down on the long-term storage
> requirement.
> 
> 
> 
> > -----BEGIN PGP SIGNED MESSAGE-----
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> >
> > <quote who="John Dickson">
> >> Anyone here have an opion on 4 PVR-250's in a Myth box? Running
> >> simultaneously. Six hours a day seven days a week 52 weeks a year.
> >>
> >> I am also searching for a way to pull VBI data (cc) from video. Myth
> has
> >> a
> >> spot in setups that deals with closed captioning which gives me some
> >> hope.
> >
> > Have you done the math on the rate of HDD usage per minute/hour/day for
> > what you want to capture?  From the MythTV.org HowTo file, the range
> is
> > anywhere from 700MB/hour (MPEG-4?) to 2GB/hour (MPEG-2 / RTjpeg?) [1].
> > Doing the math, that's (1GB..2GB/hour) * (6 hours/day) * (4 channels)
> ==
> > 24 to 48GB per day -- guess that's not as bad as I was expecting. :)
> >
> > Do the PVR-250's do HW encoding?  If not, then from what I have heard,
> an
> > Intel P4-3GHz might be minimal to keep the encoding of four simultaneous
> > streams.
> >
> > Mind if I ask the application this is for?  If it is for monitoring CCTV
> > for security/etc, then sub-700MB/hour will be fine.  If it is for archival
> > of HDTV and/or custom DVD burning then the 2GB/hour might be more in
> line.
> >
> > I too have a box downstairs that is earmarked as a Myth server in the
> near
> > future... :)
> >
> > Dan
> >
> > 1: http://www.mythtv.org/docs/mythtv-HOWTO-3.html#ss3.1
> >
> > - - - - -
> > "I do not fear computer,
> > I fear the lack of them."
> >  -- Isaac Asimov
> >
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> 
> -- 
> Jay Swackhamer
> Reboot The User
> 15791 West Dodge Road
> Suite 135
> Omaha, NE 68118
> (402) 933-6449
> (402) 933-6456 Fax
> http://www.RebootTheUser.com
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