[mythtv-users] Re: Max number of recording cards in one backend?

[Erik Pettersen]

Well,  in general I think you *normally* just grab one stream to cat
to disk at a time, but http://www.promise.tv/ has kinda put that
thinking on it's ear a little bit, but that's a bit of a digression me
thinks.

Anyways for the o.p. it sounds like it's immently doable.

e.
--
http://www.byopvr.com

On 8/15/05, iso <iso at isorox.co.uk> wrote:
> On Mon, Aug 15, 2005 at 03:26:14PM -0400, Erik Pettersen wrote:
> >> So what's a 'reasonable' number, can I get away with 3xDVB-T + 1xPVR-250 ?
> > I'm not sure how that translates PCI bandwith wise to 3 DVB-T's and 1
> > PVR250, but *shrug*
> 
> I'm not sure how DVB-T cards work, but in the UK each mux is 24MBit, and
> a PVR250 is arround 8Mbit for a total bandwidth of 80mbit/s
> 
> That's about 5 PVR500's with both tuners outputting 8mbit/second
> 
> If you can choose to ounly output the ~6mbit individual program then
> you're down to under 30mbit/second even with the worst you're likely to
> see from statistical multiplexing.
> 
> > Wouldn't the hard disk be the choke point before the PCI bus would, or
> > am I off base with that assumption?
> 
> Normally yes, however a striped raid would work.
> 
> Do DVB-T cards capture the entire mux or just output the individual program
> stream? (my DVB knowlege is limited - too many tables for my poor brain, but
> I think that's the right terminology)
> 
> 
> 
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