[mythtv-users] 5200 or 6200

[Steven Adeff]

On 1/24/07, Nick Morrott <knowledgejunkie at gmail.com> wrote:
> On 24/01/07, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
> > On 1/24/07, Rich West <Rich.West at wesmo.com> wrote:
> > > Jarod Wilson wrote:
>
> > > > Okay, read it, and I read it to say that 1080p60 is indeed 2x the
> > > > resolution of 1080i60, but that 1080p24 and 1080p30 are more commonly
> > > > found in the wild today.
> > > >
> > > > Additional reference material:
> > > > http://en.wikipedia.org/wiki/1080p#Broadcasting_standards
> >
> > fields vs frames my friend. two fields = 1 frame.
> > (1080 / 2) * 2 = 1080.
>
> I'm not sure what the fields vs frames 'proof' adds to the argument
> without taking into account the relative refresh rates of fields vs
> frames also. Fields are irrelevant with progressive video as whole
> frames are displayed.
>
> 1080p60 has twice as many pixels/s as 1080i60, as Jarod stated earlier:
>
> 1080i60 = (1920x540 pixels per field) x (60 interlaced fields per
> second) = 62,208,000 pixels/second.
>
> 1080p60 = (1920x1080 pixels per frame) x (60 progressive frames per
> second) = 124,416,000 pixels/second.
>
> 1080p30 will have the same datarate as 1080i60 however, and fast
> action scenes may look smoother using the 1080i60 format.

2 fields = 1 frame. Fields are each "half" of an interlaced image. So
1080i60=1080p30.
124,416,000 / 2 =62208000. Again, a single frame of 1080i is not any
more pixels per frame than a 1080p frame. And stop throw in pixels/sec
in, it has nothing to do with what we're talking about.

-- 
Steve
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