I've had quite a bit of response to yesterday's
post about HD MythTV. Thanks for the input folks, you've pretty
much answered all my doubts!
Cafuego told me he's having no
trouble recording two HD streams over an NFS share on 100 meg
ethernet, so local SATA shouldn't have any trouble. That's about what
I'd expect too, though commercial flagging crunches the drive a lot.
Spread between two drives with the new Storage Groups feature, I
reckon it'll be fine.
Dave wrote to tell me
he's happily watching HD on an AMD64 3000+ CPU and an Nvidia GPU. He
points out that XvMC acceleration of MPEG decoding is important, which
is the same as I've found with my silent SD front-end. One thing I've
been wondering about is whether Australia's DVB-t solely uses MPEG or
whether one of the other standards is also in use. The Wikipedia page mentions
use of the H.264/MPEG-4 AVC codecs, though I suspect that's a very new
thing and not used here.
Dave also points out that [wife] "Rozie never seems to get around
to watching half the stuff she schedules", but that's pretty much the
point of a PVR for me. Record everything that might, possibly be
interested, but don't get too upset if it expires off unwatched. The
occasional night you spend in wanting to blob out with lots of telly
makes it worthwhile. The approach becomes "what's the telly got for
me" rather than the old style "what's on telly".
Matt chimed in with some great
info about the Panasonic LCDs I'm looking at. "I helped my parents
pick out the 700A a couple months ago, and they (and I, when I'm
around) have been really, really happy with it. The picture is
extraordinary, and the signal processing (noise reduction, motion
comp.) it does on the (crappy) foxtel and (sometimes crappy)
free-to-air signals is amazing. Better than far, far more expensive 42
and 50 inch plasmas I've seen." Glad to hear it and that's been my
impression from various forums and reviews around the traps. Not so
sure about the motion compensation and noise reduction which seems to
be the main difference between the 70A and 700A. Will have to check
it out in a shop, side-by-side, I think.
Matt also suggest looking at Via Mini-ITX options which "are
fanless and feature a DVI port". My SD front-end is an ME6000 and
it's brilliant. Absolutely silent, which is ideal for the lounge
room. The problem is, the newer
EPIA boards that might have the grunt for HD look great, but I
haven't been able to definitively confirm that the free drivers support the new
chipsets, or that there's enough grunt for a 1080i stream. Anyone
able to shed any light there?
TimC had some suggestions about fixing the green tinges on the old
CRT. The green tinge appeared after we moved, and could well be due
to proximity to speakers. He's suggested trying some degaussing or
magnet actions. I might give it a go just out of curiosity, but the
other half has agreed to an LCD so I'll still go down that path ;)
Craig described his VDR/Xbox
running XBMC setup which sounds quite cool, but it wouldn't be up to
HD and XBMC doesn't integrate with MythTV particularly. His comment
about HD broadcasting in general rings pretty true though:
"personally, i think that unless your TV is fantastic then you just
aren't going to notice any difference between HD and SD except that
the former takes up a *LOT* more disk space." I'm inclined to agree
there, particularly if you haven't got a 1080i/p screen. 768 lines of
resolution is certainly more than SD's 480, but it's not really that
much.
I think I'll take his advice and see whether I care enough to
upgrade from SD rather than dive straight into it. I suspect the
improvement in quality won't be all that important, and the
improvement just from having a bigger, better telly will be enough.
For now, anyway.
So thanks for the responses folks. Most enlightening!