Joseph A. Caputo
jcaputo1 at comcast.net
Thu Jan 8 16:55:54 EST 2004
On Thursday 08 January 2004 10:31, Curtis Wood wrote:
> On Thu, 2004-01-08 at 17:58, Joseph A. Caputo wrote:
> > On Wednesday 07 January 2004 23:06, Yuri wrote:
> > > Hmm, could you please explain the difference?
> > >
> > > Encoding would be from video to digital (hdd) or the other way
> > > around?
> > Both the 250 & 350 do hardware encoding (i.e., converting the input
> > TV signal to MPEG1/2 so that it takes up less disk space).
> > Only the 350 does hardware decoding (converting the MPEG1/2 data
> > back to raw video for viewing on a monitor or TV).
> > Only the 350 has an integrated TV-out (output of the decoded stream
> > to TV). Other solutions require a separate TV-out method (video
> > card with integrated TV-out, external VGA scan converter, etc).
> > However, note that the quality of the picture on the 350's TV-out
> > is reportedly far better than anything you'll get from any consumer
> > grade video card or VGA scan converter; I hear it's about on par
> > with standalone A/V equipment.
> > Think:
> > encode::decode as compress::uncompress
> > -JAC
> On the quality of the 350's tv out... How would it compare to an
> AT8500 -> connected to a 57" hitachi hdtv (widescreen) via DVI
> (720x480)? The only thing that sux about this setup is that the
> sharpness can be a big factor, and its at least 2x less sharp through
> a 250... Also since Im asking - I have a Sb Audigy (v1), but cant get
> to the AC3 pass through goodies, because I can only use the audio
> from the encoded stream - does anyone know a way around this? Would
> the 350 be anybetter?
Well, first off I've never actually *seen* a PVR-350; just going by
other people's reports. I'd imagine if you have an HDTV with DVI-in,
then the best quality would be via DVI-out if you have it; however,
you're still bound by the quality of your incoming signal + your codec
parameters. When you say it's "2x less sharp through a 250", compared
to what? Live television tuned through your HDTV? Well, that would
make sense since the 250/350 is not an HDTV tuner, so you're capturing
at standard NTSC resolution (SVHS quality, at best). If you have an
HDTV set, you might want to consider a pcHDTV card, which has hardware
compression & can receive HDTV stream over the air. Check elsewhere
for the availability of cards that can receive HDTV over cable; I don't
think there are any available in the U.S. Also, keep in mind that your
CPU requirements will go up if you want to decode & play full
HDTV-resolution streams (the pcHDTV will encode, but not decode AFAIK).
The PVR-350 won't help in the decoding for that, because AFAIK it will
only decode up to DVD-resolution (720x480 or whatever).
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