[mythtv-users] Scanlines when Panning on Regular TV
diwelf at gmail.com
Mon Feb 5 21:29:54 UTC 2007
I am still having issues with this..
I just bought a nvidia 5200 for 10$ off ebay. Hopefully that will
solve my issues. Stupid ATI! :)
I'll post an update if the tearing still exists with the nvidia.
On 04/02/07, Matt Gibson <diwelf at gmail.com> wrote:
> Hello Again,
> Sorry about the delayed response. I decided I would upgrade Gentoo +
> MYTH SVN, and well to say the least that caused a bit of problems.
> Things were crashing, mythvideo wouldn't work, etc. Finally found out
> it was because gcc was upgraded to gcc 4 when fglrx drivers require
> (were compiled against) gcc 3 with stdc 5.
> Long story short, re-emerged gcc 3, and am using it as the default
> compiler now instead of 4, and now everything is working again.
> So, back to the original question. I am using RTC method for the
> video, and I have set both the mythtv and mythfrontent chmod +s.
> I followed the tutorial to add a new sysctl option, which I had set as
> the default of 64, this has since been upped to 1024 and then again to
> 2048, but I still see the tearing.
> echo "dev.rtc.max-user-freq = 2048" >> /etc/sysctl.conf
> I don't know if opengl is working. Last time I tried to set the menus
> to opengl, instead of qt, i got segfaults all over the place.
> Would I be better off to screw all this and sell the video card the
> system has in it now, and get myself a Nvidia 5200 based card instead?
> Matt Gibson
> On 02/02/07, Nick Morrott <knowledgejunkie at gmail.com> wrote:
> > On 02/02/07, Matt Gibson <diwelf at gmail.com> wrote:
> > > Hi Nick,
> > >
> > > I'm outputting to a TV, not a monitor (CRT TV). Will that still play a
> > > factor here, I notice that page only mentions "PC MONITOR".
> > Outputting to an interlaced display device can cause additional issues
> > which I referred to as interlacing artefacts (you can see these in the
> > links Osma provided also). Deinterlacing all video output is a quick
> > way to reduce or eliminate these, but by using a proper interlaced
> > modeline it is possible to output interlaced video from your machine
> > to your TV and get a stable picture. My PVR-350 capture card produces
> > flawless interlaced output, which is not so easy with my old Radeon
> > card.
> > > That image in the link referring to tearing, is exactly what I am seeing.
> > >
> > > Where do I check the option to find out what timing method I am using?
> > > I can't seem to find it in the myth menus. I believe I'm using RTC
> > > method right now, but assume I should check out the video card (DRI)
> > > method instead.
> > Frontend setup TV playback settings. If you have a working OpenGL
> > installation you might want to use OpenGL vertical syncing as your
> > timing timing method. Your frontend logfile will tell you which method
> > is actually being used.
> > Nick
> > --
> > MythTV Official wiki:
> > http://mythtv.org/wiki/
> > MythTV users list archive:
> > http://www.gossamer-threads.com/lists/mythtv/users
> > "An investment in knowledge always pays the best interest." - Benjamin Franklin
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