[mythtv-users] Screen flicker

[Brian Phillips]

Brian Wood wrote:
> 
> Hmmm... Wish I could see it.
> 
> What you describe could be a lot of things, many of which are not
> Myth problems at all. 
> 
> Consumer video recorders often put the head switching of a VCR at the
> bottom of the screen (broadcast gear puts it in the vertical
> interval). This would appear to be some slightly-elongated white dots
> at the bottom, usually not quite stable in horizontal position.  
> 
> Character generators or other non-standard video sources can cause
> artifacts to appear at the bottom of the screen. 
> 
> These are the most likely non-Myth sources.
> 
> Is the problem you see in the actual picture area or below it? Is it
> always on the same channels? All of the time or intermittent? 

It seems to always be the same channels.  Some don't do it at all, but some
seem to do it every time I tune to them.  But I was watching a football game
last night and it had a rather large black and dark grey scoreboard at the
bottom, and it didn't seem to be flickering.  Once it cut to commercial and
there were more colors on the screen, it was flickering pretty bad.  A
pretty noticeable pink flicker.

I don't think it's unstable dots (though it could be and my eyes just aren't
good enough) but it's just a line that blinks on and off, though it does
sometimes look like it's "travelling" from side to side.

I think the flicker is below the actual picture area, and not part of the
displayed image itself.  Because if I am not on a channel where it's
flickering, the space is usually black and you can tell the picture stops
just short of it.

Brian

> 
> beww
> 
> 
> beww
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