[Mplayer-users] mplayer, radeon and DVD quality

[Christoph Lampert]

Hi Nick,


On Wed, 1 Aug 2001, Nick Kurshev wrote:
>
> I already wrote about DVD picture quality on radeon_ve under mplayer.
> I've found description of problem which is similar to described by me:
> http://www.ati.com/na/pages/resource_centre/dev_rel/atirdv.pdf
> It's described on pages 13-15.
> In short: under windows I have the best quality from represented
> on page 14, but under Linux I have the worst from those. I'm not sure -
> is it problem of codec or is it problem of mplayer? or X11 drivers?
> (Indeed pictures have quality much better than in the document, but
> roughly problem looks like that).

If I read the pdf correctly, than it's a X11-drivers problem. Or rather a
missing feature. ATI Radeon VE has a clever de-interlace filter
implemented (switchable, I guess), and the XFree driver does not support
it (yet), but the Windows Driver by ATI themselves does.
So the problem should disappear for non-interlaced material. Did you check
on that? If it's really the de-interlace thing, I would not count on this
being implemented soon.
Of course, there could be a software de-interlace filter for DVD instead,
e.g. in mplayer. That could give better results without waiting for better
drivers.

gruel

-- 
Dipl. math. Christoph Lampert (complex analysis, integral formulae)

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