interlaced video question for you XV experts

[Jaymz Julian]

On Fri, Mar 18, 2005 at 12:16:26PM +0100, Thomas Winischhofer wrote:
> On interlace devices, it could make sense... but do TV-capable cards
> really output interlace to the TV-converter? I can only speak for SiS
> cards and they do not. The video bridge (=TV converter) takes care of
> converting non-interlaced output to interlace, and there is no way to
> control or find out which field is being shown at a certain time. So
> synchonizing is impossible.

The matrox G400 at least does - and it even works 50% of the time (depending
on when the first frame is sent ;).  Supposedly, the mga directfb stuff can
actually correctly sync the fields, and I once saw a patch for syncfb (which 
I since havn't been able to locate) to do the same thing.

I ended up giving up and deinterlacing, though.  But it's a horrible solution,
since on interlaced dvd's (of which there are many) you now lose half of the
temporal information.  le sigh.

	-- jj