Re: [libdv-dev] Re: libdv problems

[Charles 'B. K. <kr...@ac...>]

Arne Schirmacher <ar...@sc...> writes:

> The Matrox G200 has two overlay modes, one is name "texturedvideo"
> (which actually isn't a real overlay, but uses the same YUV data. It
> also has more ports than the real overlay mode). This one works much
> better than the original overlay. When using the real overlay in
> 24bpp mode, the image flickers and is snowy.

Cool.  Sounds like they are using 3D HW textures with YUV color space.

My understanding is that many cards support YUV textures, but the
drivers and APIs don't exist to access them under Linux.  OpenGL
pretty much assumes RGB.  There exists extensions, but I think they
are only implemented on some SGI machines.

I'd be cursious to know if Direct3D supports it under windows.

> Maybe there is a similar option for the nVidia driver?

> Arne

My machine at work has nVidia GeForce2 GTS, and it looks to support
just the regular "real" overlay.  No YUV textures.

-- Buck