[mythtv-users] Happy...but picture is grainy

[Maarten]

On Friday 14 January 2005 02:26, John Johnson wrote:
> Try increasing the Bit Rate and Max. Bit Rate. Those will contribute to
> graininess (aka. artifacts). Therein lies one of the trade-offs.
> Graininess v. file size/processor load. Now that I think about it, the
> graininess you describe could be considered lack of grain. Consider a
> sand painting (very little compression), to a painting made with
> croutons (lots of compression).

Yes, but that grainyness can also be due to not having a strong enough input 
signal.  I had that problem and I solved it by using a high quality antenna 
amplifier.  But I use bt848 cards and they may have different specs as 
PVR250s have.
If you know what to look for it's easy to see the difference between artifacts 
(due to too low a bitrate) and analogue interference (stripes, snow, etc.)

Maarten

> On 13-Jan-2005, at 19:46, Andy Rabin wrote:
> > I built my first myth system this past summer.  It really is the
> > greatest thing since sliced bread...don't know how we lived with
> > commercials until now!!!
> >
> > Now that my wife and I are getting used to it, thought, we've noticed
> > that the picture quality isn't *quite* the same as live tv.  I've
> > tried increasing the resolutions in setup, but it doesn't seem to
> > change the slightly grainy appearance of the tv.  Any thoughts?  My
> > system specs are:
> >
> > 1Ghz Athalon processor
> > 2 Hauppauge PVR-250's
> > Geforce 4 MX w/S-Video out
> >
> > Thanks,
> > Andy