[mythtv-users] 5200 or 6200
t004 at kbocek.com
Thu Jan 25 05:31:25 UTC 2007
Is there such a beast as 1080p60? I thought the upper end choices were between
1080i60 and 1080p30 -- both rendering 30 full frames a second. Is there any
reason to render 60 full frames a second?
Jarod Wilson wrote:
> 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
>>>>> found in the wild today.
>>>>> Additional reference material:
>>> 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
>> 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
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