[mythtv-users] Pixelation Issues

Brian Wood beww at beww.org
Tue Mar 6 03:39:15 UTC 2007

On Mar 5, 2007, at 7:52 PM, D wrote:

> I only have a sd tube tv - it should be 4:3.  My first thought was an
> overscan issue. but the mythtv gui fills the screen except for a wee
> bit at the top and the bottom that I need to tweak the overscan for.
> Recording at 4:3 on the other hand, places black bars on the left and
> right side of the video when playing back (unless I zoom or fill).
> Square on the other hand works and looks fine, filling the same
> screensize as mythgui,  but it seems like the wrong thing to be doing.
>    Maybe I should try recording at 4:3 and playing it on my desktop to
> see if the black bars are indeed encoded in the video as I think they
> are.
> I mean, technically it looks as good as the regular live straight
> cable to tv for everything except sporting events, but it doesn't seem
> to be the right thing to be doing.

I don't have a CRT handy to check but I seem to recall that square  
pixels is the correct setting, but perhaps somebody driving a CRT  
would know better.

By "Sporting Events" do you mean you are seeing artifacts in fast and/ 
or unpredictable motion? That's pretty much the nature of the beast  
with an encoder in the consumer price range, and a lot of sporting  
events are being transported as mpeg streams, even if they are  
eventually transmitted as analog by a station or cable system. I see  
all sorts of artifacts in live sports, even the SuperBowl looked  
terrible to me because of them, and this was confirmed by a few other  
folks at the other end of the country seeing the exact same thing.

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