[mythtv-users] 5200 or 6200

[Jarod Wilson]

On Jan 24, 2007, at 16:44, Nick Morrott 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:
>>>> 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.

Yep, that's more or less the same math I came up with... Also, note  
the mention on the page I linked to stating how 1080p60 raises  
bandwidth requirements versus 1080i60 "from 1.493 Gb/s to nominally 3  
Gb/s."

-- 
Jarod Wilson
jarod at wilsonet.com