[mythtv-users] Refresh Rate reported for interlaced output (was: New nVidia 169.07 and interlace changes)

[Alex Halovanic]

Well I think nvidia's reporting the refresh rate wrong with nvidia-settings as 
mine's showing 29.97 Hz for the component out.  I guess it's almost right as 
59.94 Hz /2 for interlacing = 29.97 full frames, but that's not a real 
refresh rate by the correct definition.  Maybe they just show Tvs as always 
29.97 and DVI devices at ~60 since they're both assumed to be all about the 
same?  However, it seems with both of our experiences that it is in fact 
producing the correct refresh rate, otherwise I don't think the video would 
sync at all, certainly not at 60.05, so my conclusion is that nVidia's got it 
just about right and Mythtv's the one that's at fault.

I think the crucial thing in the 'use video as timebase' is that the audio 
tends to drift slightly and is not the best source for syncing something as I 
end up seeing the fps in the verbose playback output going up and down a lot.  
It's too bad the internal player causes DVDs to stutter horribly for me with 
this option on or I would use it.

Another problem I suspect is that mythtv doesn't do anything to sync to the 
top field so you end up with completely reversed sync half the time.  If that 
could be solved (I think I saw a rough patch for it once, but can't for the 
life of me find it again) then that would eliminate the pause-unpause hack.

>I was curious
>though...you're not suggesting that's a viable way to use myth are you
>:D.  If I were going to abandon pausing and time shifting, I'd just
>flick my DVI switch over to my old Samsung HD receiver to get true
>1080i :D.
Of course not; I was actually advising pausing a LOT more, especially when you 
time-shift ;)

Alex 
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