Reply to Re: Hmmm... DVD is only 540 horizontal resolution (according to the EIA)

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Posted by SFTVratings_troy on 02/01/07 04:30

Anim8r is an internet stalker. He follows me around from forum to
forum. It was originally an annoyance, but now it's genuinely
starting to scare me. I may have to seek legal action.



Anim8rFSK wrote:
> In article <MPG.202aceb5f9bbf0eb989892@newsgroups.comcast.net>,
> Andrew Rossmann <andysnewsreply@no_junk.comcast.net> wrote:
>
> > In article <D_6wh.832427$5R2.679581@pd7urf3no>, stuart_miller@shaw.ca
> > says...
> > >
> > > <SFTVratings_troy@yahoo.com> wrote in message
> > > news:1170274597.382084.36170@k78g2000cwa.googlegroups.com...
> > > > For comparison other standards are:
> > > > 240 - VHS (ditto Betamax)
> > > > 330 - NTSC broadcast
> > > > 425 - laserdisc (ditto S-VHS)
> > > > 540 - DVD
> > > >
> > > > I was a bit surprised, but apparently the Electronics Industry
> > > > Association measures the resolution differently than one might
> > > > expect. They put a giant circle in the middle of the screen, count
> > > > the number of visible pixels across, and arrive at a number like "425
> > > > for laserdisc" or "540 for dvd". It seems counterintuitive, but
> > > > that's how it's done.
> > > >
> > > > I imagine if the DVD is severely compressed, the quality would drop
> > > > much lower than 540 (just as a VHS tape recorded in super-slow mode is
> > > > only ~120 across). 540 is the ideal, not the norm.
> > > >
> > > Even in optimal situations, there are two resolutions to consider.
> > > First is the signal. I had understood NTSC to be 525 each way, (for a video
> > > camera)
> > > Second is the display - there are regions of the signal ( top & bottom)
> > > which are not displayed on the screen
> > >
> > > So what you actually see is less than what is recorded. The technical
> > > sections of sites like digitalfaq explainm this properly.
> >
> > Don't confuse HORIZONTAL resolution with VERTICAL resolution.
> >
> > 525 is the VERTICAL resolution of NTSC. Of those 525, only 480 actually
> > carry picture information. The rest are for sync, closed captioning, and
> > other digital transmission features (parental control, XDS,
> > TVGuideOnScreen, timecode for VCR's, etc...)
> >
> > The 240/330, etc mentioned above are rough HORIZONTAL resolutions.
> >
> > For reference, the HD resolutions are:
> > 1280(h)x720(v)
> > 1920(h)x1080(v)
>
> Andrew, allow me to introduce you to Troy Heagy, performance troll and
> the self styled "most annoying man on usenet"
>
> Troy posts under at least half a dozen names (see below) and his game is
> to create a thread that might otherwise be interesting, and introduce a
> deliberate mistake into it, and watch it fall apart with people arguing
> about his mistake instead the actual topic.
>
> He's been busted in rec.arts.tv so many times that he's expanding his
> net to other groups, like mostly sci-fi like Farscape, and technical
> ones like these. But he sets the cross posts to rec.arts.tv to show
> that he's still managing to annoy us here.
>
> He'll now scream that we're haters, and are stalking him, etc., etc.,
> etc., and probably threaten legal action, yadda yadda yadda.
>
> Oh, and he sends death threats to people that expose him like this, and
> then will claim they've been sending HIM death threats, and writing his
> boss and trying to get him fired, blah blah blah.
>
> Killfile Troy Heagy in all (s)he-its many incarnations now:
> Troy.Heagy@gmail.com,videonovels@yahoo.com
> videonovels2010@yahoo.com,telenovels@yahoo.com,fred_h_haddad@yahoo.com
> **DON'T FORGET THE NEWEST ONE>>> SFTVratings_troy@yahoo.com

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