[mythtv-users] Re: Re: Best video capture resolution for
outputto TV?
Joseph A. Caputo
jcaputo1 at comcast.net
Fri May 16 16:15:06 EDT 2003
> -----Original Message-----
> From: mythtv-users-bounces at snowman.net
> [mailto:mythtv-users-bounces at snowman.net]On Behalf Of Allen T. Gilliland
> IV
> Sent: Friday, May 16, 2003 2:35 PM
> To: Discussion about mythtv
> Subject: Re: [mythtv-users] Re: Re: Best video capture resolution for
> outputto TV?
>
>
> Well ... based on my understanding of sampling there
> is no actual limit to the amount of sampling you can
> do of an analog signal. So for the purposes of our
> resolution debate I would say that the higher your
> horiz resolution is the better.
>
This is assuming the quality of the analog data is perfect. At some point,
the quality of your capture will either (a) contain more precision than is
necessary to 100% faithfully represent the original image (due to signal
noise, quality of the videotape at the transmitting end, etc), and/or (b)
exceed the ability of the TV to represent the full quality of the output
captured image. If I'm not mistaken, TV's also display pixels, although
they're not perfectly round like a CRT's. So there's really no point in
capturing more pixels across than your TV can show.
Again, what's the good in having a full-DVD resolution representation of a
grainy image?
Just my $.02
-JAC
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