[vdr] RGB/PAL over VGA at variable frame rate

Pasi Kärkkäinen pasik at iki.fi
Thu Jul 24 13:52:29 CEST 2008


On Thu, Jul 24, 2008 at 02:29:15PM +0300, Pasi Kärkkäinen wrote:
> On Thu, Jul 24, 2008 at 09:02:50PM +1000, Torgeir Veimo wrote:
> > 
> > On 24 Jul 2008, at 20:49, Pasi Kärkkäinen wrote:
> > 
> > >>> Hmm.. can you explain what "increase/decrease Xservers frame rate"  
> > >>> means?
> > >>
> > >> you simply adjust the time between two vertical blanking (retrace)  
> > >> intervals
> > >> to your needs.
> > 
> > > Hmm.. I still don't understand why you need to do this in the first  
> > > place?
> > 
> > 
> > It is to avoid the output framerate drifting away from the DVB-T/S/C  
> > input framerate.
> > 
> 
> Oh, now I got it.. and it makes sense :) You can't really control the DVB
> stream you receive so you need to sync the output.
> 
> There shouldn't be this kind of problems with streams from local files (DVD
> for example)..
> 

Or maybe there is after all.. it seems the output refresh rate is not
exactly 50.00 Hz, but something close to it.. so that's causing problems.

Thanks:)

-- Pasi



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