[mythtv-users] Resolving moire pattern in recorded TV

Owen Mehegan owen at nerdnetworks.org
Mon Jan 22 01:19:58 UTC 2007

I'm having some problems with my MythTV setup, where live TV or  
content that I record off TV and watch later has a noticeable moire  
pattern around things like large white surfaces, vertically or  
horizontally lined surfaces, etc. It isn't a very big deal, but the  
quality is noticeably worse than if I connect my cable box to my TV  

My video chain is standard definition cable box connecting to an ATI  
TV Wonder VE card over composite (RCA) video input. The Myth system  
then connects to an HD-capable Sony CRT television using a DVI to  
HDMI cable. My video card is an Nvidia GeForce FX 5200.

I suspect that the problem is being caused by the crappy TV tuner  
card, or the fact that I'm using the composite input, or maybe both.  
I originally tried very hard to get the coax input to work, but I  
couldn't get Myth to stop trying to change the channel on the tuner  
card, rather than on the cable box using the serial cable.

I was thinking that I would just upgrade to a PVR-250, but I figured  
I'd post and ask if anyone has any other ideas about what might be  
causing this. Thanks!

owen at nerdnetworks.org (Owen B. Mehegan)
'But that I am forbid
To tell the secrets of my prison-house,
I could a tale unfold whose lightest word
Would harrow up thy soul, freeze thy young blood,
Make thy two eyes like stars start from their spheres,
Thy knotted and combined locks to part,
And each particular hair to stand on end,
Like quills upon the fearful porpentine.'
   --William Shakespeare

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