[mythtv-users] deinterlacing and non-smooth playback at 1080i

James Buckley xanium4332 at googlemail.com
Tue May 22 16:04:43 UTC 2007


On 22/05/07, Seth Daniel <mythtv.org at sethdaniel.org> wrote:
>
> On Tue, May 22, 2007 at 03:42:33PM +0100, Mark Kendall wrote:
> > On 5/22/07, Seth Daniel <mythtv.org at sethdaniel.org> wrote:
> > FWIW, I'm using driver version 8776 on that frontend at the moment. I
> > think I had problems with interlaced modelines on the newer drivers.
>
> I tried 8776 some time ago but I remember that it had issues with XV
> over DVI.  I'm using a DVI cable to connect to my TV.  I tried going
> back to 8776 sometime later but found I couldn't get the 8776 driver to
> compile with any recent kernel that I had ('recent' meaning 2.6.17 or
> greater).  My understanding is that the 8xxx series had perfectly good
> interlaced support, but that it broke once the 9xxx series came out.
> So, if I want to use DVI, my choice is either use 8xxx and get immediate
> lockups when XV is used, or use 9xxx which at least doesn't lockup, but
> I can't get 1080i to work properly.  FWIW, I bought a second nvidia card
> with composite out.  With the 9xxx and 100.14.xx drivers it exhibited
> the same problem as I'm seeing with DVI.  I'm currently using the
> 100.14.06 driver (which I installed late last night).
>
>
> > > > Can you post a full log with deinterlacing off, aspect ration set to
> > > > Fill, opengl vsync on etc?
> > >
> > > 1) unpatched from svn trunk r13407
> > >    http://sethd.org/myth/fe.log.unpatched
> > > 2) patched from svn branch mythtv-vid r13487M
> > >    http://sethd.org/myth/fe.log.patched
> >
> > OK - no scaling, which is good.
> >
> > Can you think of any reason why the logs are consistently showing
> > 24-26fps playback  and not 30fps?
>
> I have no idea.  Does myth (or something else) think I have a PAL
> television?  Where would I even begin trying to figure that out?


So is there anyway at all to get 1080i videoo, not deinterlaced, over a
1080i DVI connection (at thus HDMI presumably). I wonder whether the opengl
video output of the mythtv-vid branch might work around the problem?

Any ideas?

James
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