[mythtv-users] zbox as a frontend: ID41 vs ID80

Paul Gardiner lists at glidos.net
Sun Apr 7 14:48:43 UTC 2013


On 06/04/2013 19:37, Steven Adeff wrote:
> On Fri, Apr 5, 2013 at 3:00 PM, Gary Buhrmaster
> <gary.buhrmaster at gmail.com> wrote:
>> On Fri, Apr 5, 2013 at 6:17 PM, Paul Gardiner <lists at glidos.net> wrote:
>> ....
>>> Do you have first-hand experience of this with an ION2 based system
>>> or are you extrapolating from experiences with the ION1?
>>
>> An ION2 is (essentially) a GT210, which according to qvdpautest(*)
>> can only do 55 frames/sec for "Advanced 2X"; your driver will
>> vary, and some different drivers have shown a lower number,
>> close to 44 as I recall.  55 might be close enough for 50Hz
>> countries, but not good enough for 60Hz countries (note that
>> having so little headroom may result in occasional glitches).
>>
>> To another point, an individuals tolerance to jitter/stutter/judder
>> varies.  Some never see what others cannot tolerate.  Since
>> this is such an individual perception (subjective) issue, it is
>> not possible to rate/rank it in any meaningful way.  And
>> some TV's have their own deinterlacer (of which its quality
>> will also vary) should you be sending the interlaced signal
>> to a TV for processing.
>>
>> And, as countries vary, it is always desirable to state
>> what country you are in so one can at least compare
>> a 60Hz and a 50Hz response.
>>
>> Gary
>>
>> (*) Yes, qvdpautest is not the best tool, but it does tend
>> to have some correlation with observed artifacts.
>
> everything Gary said.
>
> I don't know if the ION1 does or doesn't support HQscaling, both my
> ION machines are on smaller TV's, so they may not, but it may not make
> a difference on those screens either.
>
> I have noticed on my GT220 that it does make a difference and is
> enough better than the scaling in my plasma to ensure I enable it.

Ah, so you find the using hq scaling gives better quality that allowing
mode changes and letting your TV do it. What TV is that?

P.


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