On Fri, 22 Jul 2005, Bryan Mayland wrote:
Big Wave Dave wrote:
Your screen grab seems ok to me. Is it the general consenus that they
are not good cards? I just bought one... haven't installed yet... but
am now worried.
I think they are decent cards. The only problem I really have with mine
is that sometimes the croma comb difference gets too high and it turns off
the comb filter and goes to the notch filter, and my picture gets blurry.
I've gotten around this a bit by upping the CCOMB_ERR_LIMIT, but I think the
picture is still less sharp than the 250 even with the sharpness boost on.
This might be because of the tuner though, because I can get much better
quality from the composite input.
That's odd. From the chipset specs, the 150/500 has a more
advanced comb filter than the 250/350.... something about 4-line adaptive
vs. 3-line static or something IIRC. Have you (or anyone else for that
matter) played with enabling the additional features?
The 250 isn't without it's problems either, for some reason mine seems to
want to do auto-brightness or something where I'm watching a show and it
suddenly gets noticably darker and stays there.
Anyway, here are 2 shots from my 150 again. The first is right from the
PVR, the second is deinterlaced using tomsmocomp (which I use when I archive
the recordings to xvid).
http://capnbry.net/~bmayland/fi/pvr150/sample-news.png
http://capnbry.net/~bmayland/fi/pvr150/sample-newsdeint.png
I have *never* been very satisfied with the resolution out of
either of my 250's. One is a -15, the other is a -16 chip. Basically,
watching on the regular CRT SDTV always seems much crisper than the 250 at
*any* capture resolution. ... and yes, I'm *positive* it's not the tvout
from the computer. Homebrew hardware straight out of the VGA port at SDTV
frequencies. DVD's and test patterns played from the mythbox look stellar
(or as stellar as SDTV can look). Anything over about 480x480 is
unnoticable/immeasurable improvement.
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--
*************************************************************************
* Cory Papenfuss *
* Electrical Engineering candidate Ph.D. graduate student *
* Virginia Polytechnic Institute and State University *
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