[linux-dvb] Re: FF cards alter PTS'?

[Holger Waechtler <holger@convergence.de>]

Onno Kreuzinger wrote:
> Urg i hate sending mail wrong, but it happened again
>
> Holger Waechtler schrieb:
>
> > Onno Kreuzinger wrote:
> >
> > > > I was mainly thinking of df-gp, the first VDR patch I know that 
> > > > worked on the frambuffer (http://df-gp.sourceforge.net/). The first 
> > > > NEWS entry is now about 19 months old.
> > > df-gp suffers from exactly the problems i expected, 1st: only Matrox 
> > > tv-out cards are suffcienty good ($$$),
> >
> >
> > I doubt that is true.
>
> Well i was looking for a gfx with a tv-out suitable for a quite big 100Hz,
> and atleast accordind to the c't tests, only _very_ few gfx cards are only
> ~5-10% off the pal standart, matrox is and was always good at tv-out, but
> $$$, if you realy doubt i will scan you the article, it only a few month 
> old.
The timings are mostly much a driver, not a hardware issue. And consumer 
TVs are usually pretty uncritical in this relation.

The reason why many TV-outs look bad and their colors seem lifeless is 
that application developers don't set up the Gamma ramp correctly, but 
this is easy and trivial to implement, SDL, DirectFB and OpenGL provide 
you the API to do this easily, I suppose other graphics APIs too.

See e.g. http://www.bberger.net/rwb/gamma.html and 
http://graphics.stanford.edu/gamma.html for an explanation.


> > ffmpeg contains a deinterlacer of pretty good quality. Give it a try.
> well, i doubt it can realy handle all mpeg2 wich may come from the sky, 
Please try it before ranting and distributing lies and underdone ideas. 
End even when it has problems then they are probably easy to fix - do 
you remember how long it took to get our firmware and drivers in a 
usable state? Why have you been there so patient but are not willing to 
give an alternative solution the same chance?

Holger




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