[mythtv-users] Much improved 1080i display

[Paul Gardiner]

Jean-Yves Avenard wrote:
> Hi
> 
> 2009/4/3 Paul Gardiner <lists at glidos.net>:
>> I think that's as I would expect. I don't have an HD TV or any HD
>> sources to test with, but I believe Tom has his system set up to
>> use several display modes, matching them to the source. So you'd
>> need to make it use the 1080i mode only for 1080i content, and
>> you'd need a 576i mode more 576i content. That's assuming you
>> can send 576i via the input of the TV that you've chosen to use.
>> My guess would be that HDMI and DVI inputs can accept 576i, but
>> I've never tried it.
> 
> Well, watching 1080i content with Interlaced 2X ; it looks fantastic...
> 
> Watching basketball right now, the ball motion is really good.
> With VDPAU (Temporal Spatial 1X) and TV set to 1080p the motion of the
> ball is nowhere near as good
> With VDPAU however, the image is much sharper

Interesting. I wonder why it's less sharp. I guess you can't use VDPAU
for decoding with the fieldorder deinterlacer, so presumably you use
XVMC? Perhaps you are running into the XV/interlace incompatibility
problem with the nVidia driver. When I tried 576i from an FX5200, I
ran into that problem: it looked like only one interlace was
displaying. On the other hand, Tom doesn't seem to be seeing a lack
of sharpness, and he's using an nVidia card, I think. I guess the
other possibility is that the TV's deinterlacing is losing sharpness.

Shame. It wasn't supposed to be a play off between different aspects
of quality. It was supposed to be an overall win in cases where it
works.

Cheers,
	Paul.