[mythtv-users] Scanlines when Panning on Regular TV

jason maxwell decepticon at gmail.com
Fri Feb 2 15:09:12 UTC 2007

if what you're seeing is not interlaced fields being shown
sequentially, then i think i have seen what youre talking about. any
panning makes the screen flicker a bit, as if the display's refresh
cant keep up. i had a similar issue when watching divx movies to my tv
with my old nvidia tv card. the issue was completely solved by
upgrading to the latest graphics drivers. make sure you have the
latest fglrx.

On 2/1/07, Nick Morrott <knowledgejunkie at gmail.com> wrote:
> On 02/02/07, Matt Gibson <diwelf at gmail.com> wrote:
> > Hello,
> >
> > I have searched and searched and not found a definitive answer to my
> > question, so I will ask it here.
> >
> > When I am watching tv, recorded shows, dvd's, etc - I see a weird
> > "flicker" or "scanline" when the movement pans from left to right. I
> > notice it especially in shows like CSI or Las Vegas where they use
> > fast cuts, and intensive action sequences. It's not always there, but
> > it's definatly more prominant when the scene is panning left to right.
> >
> > When a scene pans from left to right, or right to left, I can see the
> > scanning coming up from the bottom of the tv and it creates a visible
> > line of where the two frames are and where they are going. It's kind
> > of hard to explain.
> This is a very common issue. The lines you are seeing are interlacing artefacts.
> > I assume this is something due to my resolution or something, but I am
> > not sure how to fix it. It's kind of annoying. Any ideas would be
> > greatly appreciated!
> <snip>
> >                         -> TV Settings
> >                                 -> Playback
> >                                         Deinterlace: NO
> Turn on deinterlacing in mythfrontend setup, and these lines will go away.
> If you are outputting to a TV (not to a monitor which is a progressive
> device) you can avoid having to deinterlace video by ensuring that you
> output a proper interlaced signal to the TV from the video card, but
> this can be hard to achieve. It's often much quicker just to turn on
> deinterlacing.
> Nick
> --
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