[mythtvnz] 50Hz vs 60Hz refresh rate

[tortise]

>> IMO
>> Using a more appropriate video mode is worth the effort.

Intuitively this makes sense.  Its hard to do better than the data in 
the recording, although it seems possible, e.g. de-interlacing.

>
> yes i am going to play around with the "any" video refresh rate
> setting on my gt220 paired with sony 46" tv.

I've a brief go, referring to 
http://www.mythtv.org/wiki/User_Manual:JudderFree
adding

Option      "FlatPanelProperties" "Scaling = Native"

into xorg and doing the 1920x1080 / any settings.

TV still says its getting 1080i at 60Hz   Hmmm  I'll try a change to a 
digital cable (from component) and see if that makes the difference, as 
was suggested earlier.

Its interesting to consider PC monitor refresh rates, that 60Hz are 
generally the minimum, and can be inadequate for a comfortable viewing 
experience, with 75-85Hz having significant success in tricking our 
brains into perceiving better image quality.  Come along LCD's and 60Hz 
is suddenly fine.  (And we have a raft of new measurement dimensions to 
compare problems that did not need to be measured as they were not an 
issue in earlier technologies - speed, blacks, whites, viewing angles etc)

Yet 50Hz freeview is seen to be very good.  Go figure.  I think the 
explanation is that the video images are generally moving, compared with 
static flashing images, and also the underlying technologies, with CRT 
screens being much faster gave them the ability to show the flashes much 
better also.

Then add into the picture 24 fps videos, which is even less intuitive, 
bearing the previous comments, I can only assume these are shown at 48Hz 
or possibly other multiples to provide the necessary quality?