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Which cards/drivers implement /dev/vout with VBI output?

On Wed, 10 May 2006, Leon Woestenberg wrote:

> On 5/10/06, Stefan de Konink <skinkie (at) xs4all.nl> wrote:
> > On Wed, 10 May 2006, Leon Woestenberg wrote:
> >
> > > I would like to send VBI on a composite or S/VHS video output.
> > >
> > I asked this before and researched it alot... but except for a matrox card
> > supporting this I only found out that ati and nvidia actually have a data
> > insertion pinout like normal 'modulators' have. But no actual chip seems
> > to have a chip that allows to make the data to be inserted.
> >
> I suppose full raw luminance output on the (blanking) lines suffices
> for our purpose, we can create the sampled waveform in userspace, it's
> just that the video driver has to support putting the waveforms in the
> blanking lines.

The on list reply ;) This isn't going to work. Or at least not without a
real hack. The idea I saw serveral times was to do it in OpenGL on VSync.

Using an GF2 my TV actually shifted colours if I did some major things
wrong on the first lines. But on a GF4, which has a different encoder you
can't do anything... probably overscan related.


Stefan

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