[mythtv-users] OT: Optimising 50Hz over 60Hz VGA

[Ben Lancaster]

On 10 Apr 2007, at 18:35, David Campbell wrote:

> Ben Lancaster wrote:
>> On 10 Apr 2007, at 15:45, Mark Kendall wrote:
>>
>>> On 4/10/07, Ben Lancaster <lists at benlancaster.co.uk> wrote:
>> .... are there any ways of improving PAL over 60Hz  VGA?
>> The only solution I can see is to get a video card with component TV
>> Out; I'm not sure this annoyance merits the £40 expenditure.
>
> What Samsung LCD are you using?  I have a  LE32R73BD running at  
> 1360x768
> on a GeForce4 MX 4000 over VGA and I am very pleased with playback.

LE23R41B @ 1360x768_60 via FX5200

On 10 Apr 2007, at 21:44, ryan patterson wrote:
> What issues do you have with PAL playback at 60Hz?  I've played  
> many PAL recordings on my old NTSC TV at 60Hz and on my new HDTV at  
> 1080p 60Hz.  I've never noticed any significant problem with doing  
> this.

Playback is generally very good, it's difficult to describe the exact  
problem, but fast moving scenes or panning are just very very  
slightly jittery I suppose. The problem is because Xv has to  
duplicate 10 frames every second (assuming PAL and Bob 2x) in order  
to turn 50fps to 60fps in order to match the TV.

It's by no means a show-stopper, and to be honest I hadn't noticed it  
until I compared it with MS MCE on a friend's 26" Samsung TV with  
v.similar hardware. It turns out his is running via DVI -> HDMI and  
at 50Hz. I guess now that I know it should be better, I'm struggling  
not to notice it!

Ben

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