[Openchrome-users] (driver bug) Xv/XvMC picture adjustments w/OpenChrome

Daniel Kristjansson danielk
Fri Aug 25 08:33:05 PDT 2006


A little update. I had T?rbjorn try removing the "XV_SWOV" adjustment.
The first interesting thing is this affected both XVideo and XvMC, so
they are both using the same adaptor. You guys probably already knew
this. The second interesting thing:

> Analog recordings looks almost black and while when hue is at 0%
> Changing hue to 50% makes the picture look as before, something
> that looks like red and blue is swaped and OSD looks OK.

> Dvb recordings at 0% hue also looks different, almost as if there
> is less color or something. At 50% hue the picture looks good.

His DVB recordings are MPEG-2 and are displayed using XvMC, and his
Analog recordings use MPEG-4 and are displayed using XVideo.

Anyway, it sounds like in XvMC the driver's hue adjustment is
controlling the hardware's saturation control. So this is a
driver bug. He is using the driver that ships with Fedora Core 5,
so this may be fixed in SVN...

Perhaps the driver's saturation control is controlling the hue?

-- Daniel





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