[mythtv-users] New deinterlacer for perfect image quality when using an interlaced display, mode that matches the source

[Seth Daniel]

On Thu, Mar 26, 2009 at 03:21:50PM -0400, Tom Dexter wrote:
> On Thu, Mar 26, 2009 at 12:17 PM, Preston Crow
> <pc-mythtv08a at crowcastle.net> wrote:
> > On Thu, 2009-03-26 at 15:51 +0000, Paul Gardiner wrote:
> >> Preston Crow wrote:
> >> > I do 1080i with an nVidia 5200FX card.  That's AGP, not PCIe.  The only
> >> > driver that works with this is version 8776, and it only works when
> >> > connecting with DVI (using DVI->HDMI in my case) to a TV that puts out a
> >> > valid EDID 1080i mode.  If you try to specify a 1080i modeline, it won't
> >> > work.  I've recently patched it to work with more recent kernels, but it
> >> > limits me to Xorg-1.3.
> >> >
> >> > The latest drivers have dropped support for my card, so I haven't been
> >> > able to test them to see if they've fixed the problem, but I haven't
> >> > heard anything encouraging.
> >> >
> >> > The lack of good video drivers for 1080i is the main thing holding me
> >> > back from upgrading my MythTV system.  I like my native-1080i TV.
> >>
> >> That's interesting. What do you do about synchronisation of the
> >> interlaces between source and display? Do you use a deinterlacer,
> >> or does the 5200FX produce only one vsync per frame?
> >
> > I don't use a deinterlacer, and it looks fine, so I'm guessing that
> > there's only one vsync per frame.  I have an AMD 2500+ Athlon.  I
> > normally use XVMC for HD, and that works pretty well.  Without XVMC, I
> > can still do HD, but if anything else is running, it starts to hiccup.
> >
> > The 5200FX is fanless, but apparently shouldn't be; I've had two burn
> > out, so I've bought replacements on eBay.
> >
> 
> I thought you might be interested in this if you didn't see it.  Seth
> Daniel on the list says that nVidia has apparently acknowledged this
> and files bugs:
> 
> http://www.gossamer-threads.com/lists/mythtv/users/372990#372990
> 
> ...though I haven't actually seen what he's referring to on the nVidia forums.

I haven't been on the forum in a while.  I'm content with using vdpau w/
bob 2x + 2903 patch.  It looks really good.  Much better than using 
software bob 2x + 2903 patch.  Not to mention that the CPU utilization
is *much* less.

At one point I was more active on the nvnews forum and I actually
received responses from Stephen Warren (the most active of the nvidia
folks on that forum).  Although playback of 1080i material to a 1080i
display still tears if you don't use bob 2x + the 2903 patch.

-- 
seth /\ sethdaniel.org