[mythtv-users] blurriness when playing 1080i -> 1080i

Seth Daniel mythtv.org at sethdaniel.org
Sat Mar 17 21:41:35 UTC 2007


I've been trying to figure out some problems I'm having when playing
1080i content when the Nvidia driver is configured to play at

When I don't deinterlace the 1080i video the playback is smooth but will
be blurry for 20 seconds, then non-blurry for 20 seconds, then blurry
again,...  If I deinterlace the image the playback is not smooth but
there is no blurriness (regardless of deinterlacing technique).  I have
a dual core AMD64 3800.  The CPU isn't working too hard regardless of
settings.  I haven't actually timed the blurriness.  It may be 7 seconds
or 15 seconds.  I don't know that there is any significance in the
length of time the blurriness lasts.  

All other content (480i, 480p, 720p) plays and looks fine.  If I
configure X to be at 720p then everything will look fine (except that
1080i shows a lot of shimmering and jagginess).  

I have an Nvidia 6200TC.  It is connected to my CRT RPTV with a DVI
cable.  Nvidia driver is 1.0.9755.   This also occurs with 1.0.9746.
Earlier drivers had other problems and I couldn't get any playback
with them.

Moslty I just want to know if anyone knows what this blurriness is and
how/if I can get rid of it?  I've tried numerous permutations of my
.nvidia-settings-rc with no success.  If I can get rid of this than
playback will be perfect when playing 1080i content at 1080i.

seth / @sethdaniel.org
As a computer, I find your faith in technology amusing.

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