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

[Tom Dexter]

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.

Tom